投稿時間:2022-04-06 00:27:04 RSSフィード2022-04-06 00:00 分まとめ(33件)

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js	JavaScriptタグが付けられた新着投稿 - Qiita	npm run build でビルドする際にwarnings when minifying css: ▲ [WARNING] "@charset" must be the first rule in the fileのエラーが出てしまう時の解決法	https://qiita.com/RyoSakon001/items/5f3744c0c553d468a920	npmrunbuildでビルドする際にwarningswhenminifyingcssWARNINGquotcharsetquotmustbethefirstruleinthefileのエラーが出てしまう時の解決法ビルドnpmrunbuildとはnpmrunbuildとは、作成したVueアプリケーションをコンパイルし、サーバーアップロード本番環境向けにファイルサイズを小さくしたものを生成するコマンドです。	2022-04-05 23:51:32
Ruby	Rubyタグが付けられた新着投稿 - Qiita	Ruby	https://qiita.com/Rinshigemu923/items/c1f78eb4b7f76f3afb20	最初にシンプルという観点でプログラミング初心者さんでも簡単に自分のウェブページが作れてしまうところなんです私自身、プログラミングのプの字も知らずにrubyの言語習得に挑んでみたのですが、rubyonrailsというコマンドを打つだけで大枠を自動生成できる機能があるフレームワークにより、本来とても複雑になっている作業が自分でコードの中に数回コマンドを入力するだけで自身の作りたいウェブサイトの大枠が作り上げられてしまいます。	2022-04-05 23:50:53
Linux	Ubuntuタグが付けられた新着投稿 - Qiita	Docker上にROS1,ROS2の共存環境を作成する。	https://qiita.com/koki2022/items/ab148df658be144cb3b7	ROSのcatkinwsを作ってない場合は作っても良いですVNC上のコマンドに打っていけばいいです。	2022-04-05 23:21:31
Docker	dockerタグが付けられた新着投稿 - Qiita	Docker上にROS1,ROS2の共存環境を作成する。	https://qiita.com/koki2022/items/ab148df658be144cb3b7	ROSのcatkinwsを作ってない場合は作っても良いですVNC上のコマンドに打っていけばいいです。	2022-04-05 23:21:31
Azure	Azureタグが付けられた新着投稿 - Qiita	【Terraform de Azure】 Azure Data Factory のベースを作成してみました	https://qiita.com/turupon/items/c80e7651b9927b745c3a	【TerraformdeAzure】AzureDataFactoryのベースを作成してみました概要「InfrastructureasCode」ということで、Terraformを用いてAzureDataFactoryのデータセットまでの基盤を構築し、この記事で作成したAzureDatabaseformysqlをsourceに、AzureBlobをsink等に指定できる準備をします。	2022-04-05 23:04:42
Ruby	Railsタグが付けられた新着投稿 - Qiita	Ruby	https://qiita.com/Rinshigemu923/items/c1f78eb4b7f76f3afb20	最初にシンプルという観点でプログラミング初心者さんでも簡単に自分のウェブページが作れてしまうところなんです私自身、プログラミングのプの字も知らずにrubyの言語習得に挑んでみたのですが、rubyonrailsというコマンドを打つだけで大枠を自動生成できる機能があるフレームワークにより、本来とても複雑になっている作業が自分でコードの中に数回コマンドを入力するだけで自身の作りたいウェブサイトの大枠が作り上げられてしまいます。	2022-04-05 23:50:53
Ruby	Railsタグが付けられた新着投稿 - Qiita	【Rails】To avoid mistakes, drop_table is only reversible if given options or a block (can be empty).エラーの対処法	https://qiita.com/Bjp8kHYYPFq8MrI/items/8d2a36bbe5186fc41c98	【Rails】Toavoidmistakesdroptableisonlyreversibleifgivenoptionsorablockcanbeemptyエラーの対処法やりたいことrailsdbmigratedownVERSIONで指定したマイグレーションファイルをdownさせたい→最終的にはマイグレーションファイルを削除したいエラー内容railsdbmigratedownVERSIONMastersrevertingrailsabortedStandardErrorAnerrorhasoccurredalllatermigrationscanceledToavoidmistakesdroptableisonlyreversibleifgivenoptionsorablockcanbeempty省略調査toc↑の記事がめちゃくちゃ役に立ちました原因droptableでテーブルを削除するにあたって、ブロック形式を使わないとエラーになるそうです。	2022-04-05 23:05:13
技術ブログ	Developers.IO	1PasswordのVaultを使ってブラウザ拡張によるアイテムのサジェストを個別に無効にする	https://dev.classmethod.jp/articles/disable-individual-item-suggestions-by-browser-extensions-using-the-1password-vault/	password	2022-04-05 14:57:33
海外TECH	MakeUseOf	Why Elon Musk Has Bought a Big Stake in Twitter	https://www.makeuseof.com/why-elon-musk-bought-twitter-shares/	twitter	2022-04-05 14:46:27
海外TECH	MakeUseOf	How to Make Your Apple Music Profile Private	https://www.makeuseof.com/how-to-make-apple-music-profile-private/	apple	2022-04-05 14:31:14
海外TECH	MakeUseOf	8 Ways to Fix the OneDrive Sign In Error 0x8004de69 on Windows	https://www.makeuseof.com/windows-onedrive-sign-in-error-0x8004de69-fix/	windows	2022-04-05 14:16:15
海外TECH	DEV Community	The Power of Proxy Pattern in JavScript	https://dev.to/jsmanifest/the-power-of-proxy-pattern-in-javscript-6fp	The Power of Proxy Pattern in JavScriptOne of the more interesting patterns I learned on a later stage of my career is the Proxy When you look for examples of the Proxy pattern you might often see different variations of implementations That s because the Proxy is not limited to one use case One proxy may act as a validator while the other may be more interested in improving performance etc The idea is that by utilizing a proxy we wrap existing objects that functions the same as the original where its methods or even properties are exactly identical until we add additional logic inside the wrapped methods before the wrapped function is called This is is a process completely hidden to the outside world and this call will always appear the same to the caller In other words the proxy sits right in between the client of an object and the actual object itself This is where it can choose to act as a protector or add custom logic such as caching without the caller ever knowing this Because of this it can sometimes be referred to as the Mediator Some may also categorize it as another form of a Decorator pattern but there are some differences In this post we will be going over the power of the Proxy Design Pattern in JavaScript and go over several examples of how beneficial it can become for your next application Since JavaScript natively added a Proxy class that implements the pattern we will be directly using the Proxy class instead to demonstrate the pattern after a couple vanilla implementations Difference between Decorator vs ProxyIn the decorator pattern the decorator s main responsibility is to enhance the object it is wrapping or decorating whereas the proxy has more accessibility and controls the object The proxy may choose to enhance the object it is wrapping or control it in other ways such as restricting access from the outside world but a decorator instead informs and applies enhancements The difference responsibility wise is clear Engineers commonly use decorators to add new behavior or as a form of an adapter for old or legacy classes where they return an enhanced interface that the client may know about but doesn t care about at the same time The proxy is usually intended to be returning the same interface where the client may assume it is working with the same object untouched Validator HelperThe first implementation of a Proxy pattern I will be showing here will be a validator This example shows the pattern being implemented as a way to help validate input and protect properties from being set the wrong data types Remember that the caller must always assume that it is working with the original object so the Proxy must not change the signature or interface of the object it is wrapping class Pop constructor items this id const withValidator obj field validate gt let value obj field Object defineProperty obj field get return value set newValue const errMsg validate newValue if errMsg throw new Error errMsg value newValue return obj let mello new Pop mello withValidator mello id newId gt if typeof newId number return The id newId is not a number Received typeof newId instead mello id This example shows a simple helper that validates fields of an object throwing a TypeError exception when the validation fails The Proxy takes ownership of the getter and setter of the id property and chooses to allow or reject values that are attempted to be set In the Proxy class it can be implemented with something like this const withValidator obj field validate gt return new Proxy obj set target prop newValue if prop field const errMsg validate newValue if errMsg throw new TypeError errMsg target prop newValue let mello new Pop mello withValidator mello id newId gt if typeof newId number return The id newId is not a number Received typeof newId instead mello id The validator works perfectly TypeError The id is not a number Received string instead Clipboard PolyfillThis section will go over using the Proxy as a way to support older browsers when copying selections of text into the users clipboard by ensuring that the browser supports the Navigator clipboard API If it doesn t then it will fall back to using execCommand to copy the selection Again the client will always assume that the object it is calling methods on is the original object and only knows that it s calling the said method const withClipboardPolyfill obj prop cond copyFnIfCond gt const copyToClipboard str gt if cond copyFnIfCond else const textarea document createElement textarea textarea value str textarea style visibility hidden document body appendChild textarea textarea select document execCommand copy document body removeChild textarea obj prop copyToClipboard return obj const api function const o copyToClipboard str return navigator clipboard writeText str return o let copyBtn document createElement button copyBtn id copy to clipboard document body appendChild copyBtn copyBtn onclick api copyToClipboardcopyBtn withClipboardPolyfill copyBtn onclick gt clipboard in navigator api copyToClipboard copyBtn click You might ask what is the point of applying the proxy in situations like this instead of directly hardcoding the implementation inside the actual copyToClipboard function If we utilize a proxy we can reuse it as a standalone and freely change the implementation via inversion of control Another benefit from using this strategy is that we don t modify the original function Cacher Enhancing performance Caching can take in many different forms in many different scenarios For example there is a Stale While Revalidate for http requests nginx content caching cpu caching lazy loading caching memoization etc In JavaScript we can also achieve caching with the help of a Proxy To implement the proxy pattern without directly using the Proxy class we can do something like this const simpleHash str gt str split reduce acc str gt acc str charCodeAt const withMemoization obj prop gt const origFn obj prop const cache const fn args gt const hash simpleHash args map arg gt String arg join if cache hash cache hash origFn args return cache hash Object defineProperty obj prop get return fn return obj const sayHelloFns prefixWithHello str return hello str const enhancedApi withMemoization sayHelloFns prefixWithHello enhancedApi prefixWithHello mike enhancedApi prefixWithHello sally enhancedApi prefixWithHello mike the giant enhancedApi prefixWithHello sally the little enhancedApi prefixWithHello lord of the rings enhancedApi prefixWithHello lord of the rings enhancedApi prefixWithHello lord of the rings enhancedApi prefixWithHello lord of the rings enhancedApi prefixWithHello lord of the rings Cache hello mike hello sally hello mike the giant hello sally the little hello lord of the rings Implementing this directly in a Proxy class is straight forward const withMemoization obj prop gt const origFn obj prop const cache const fn args gt const hash simpleHash args map arg gt String arg join if cache hash cache hash origFn args return cache hash return new Proxy obj get target key if key prop return fn return target key The Proxy classWe ve seen a persistent pattern in a couple of barebones Proxy pattern implementation vs directly using the Proxy class Since JavaScript directly provides Proxy as an object into the language the rest of this post will be using this as a convenience All remaining examples can be achieved without the Proxy but we will be focusing on the class syntax instead because it is more concise and easier to work with especially for the sake of this post Proxy to SingletonIf you ve never heard of a Singleton it s another design pattern that ensures that an object of interest will be returned and reused if it s already instantiated throughout the lifetime of an application In practice you will most likely see this being used as some global variable For example if we were coding an MMORPG game and we had three classes Equipment Person and Warrior where there can only be one Warrior in existence we can use the construct handler method inside the second argument when instantiating a Proxy on the Warrior class class Equipment constructor equipmentName type props this id Math random toString substring this name equipmentName this type type this props props class Person constructor name this hp this name name this equipments defense offense attack target target hp const weapons Object values this equipments offense if weapons length for const weapon of weapons console log weapon target hp weapon props damage equip equipment this equipments equipment type equipment id equipment class Warrior extends Person constructor super arguments bash target target hp function useSingleton Constructor let warrior return new Proxy Constructor construct target args newTarget if warrior warrior new Warrior args return warrior const WarriorSingleton useSingleton Warrior If we try to create multiple instances of Warrior we are ensured that only the first one created is used every time const mike new WarriorSingleton mike const bob new WarriorSingleton bob const sally new WarriorSingleton sally console log mike console log bob console log sally Result Warrior hp name mike equipments defense offense Warrior hp name mike equipments defense offense Warrior hp name mike equipments defense offense Cookie StealerIn this section we will demonstrate an example using a Proxy to prevent mutations from a list of cookies This will prevent the original object from being mutated and the mutator the CookieStealer will assume that their evil operation was a success Lets take a look at this example class Food constructor name points this name name this points points class Cookie extends Food constructor super arguments setFlavor flavor this flavor flavor class Human constructor this foods saveFood food this foods push food eat food if this foods includes food const foodToEat this foods splice this foods indexOf food this hp foodToEat points const apple new Food apple const banana new Food banana const chocolateChipCookie new Cookie cookie const sugarCookie new Cookie cookie const butterCookie new Cookie cookie const bakingSodaCookie new Cookie cookie const fruityCookie new Cookie cookie chocolateChipCookie setFlavor chocolateChip sugarCookie setFlavor sugar butterCookie setFlavor butter bakingSodaCookie setFlavor bakingSoda fruityCookie setFlavor fruity const george new Human george saveFood apple george saveFood banana george saveFood chocolateChipCookie george saveFood sugarCookie george saveFood butterCookie george saveFood bakingSodaCookie george saveFood fruityCookie console log george George s food foods Food name apple points Food name banana points Cookie name cookie points flavor chocolateChip Cookie name cookie points flavor sugar Cookie name cookie points flavor butter Cookie name cookie points flavor bakingSoda Cookie name cookie points flavor fruity We instantiated george using the Human class and we added items of food to its storage George is happy he is about to eat his fruits and cookies He is especially excited about his cookies because he s gotten his favorite flavors all at the same time soon to be gobbling on them to satisfy his cravings for cookies However there is an issue const CookieStealer function const myCookiesMuahahaha return get cookies return myCookiesMuahahaha isCookie obj return obj instanceof Cookie stealCookies person let indexOfCookie person foods findIndex this isCookie while indexOfCookie const food person foods indexOfCookie if this isCookie food const stolenCookie person foods splice indexOfCookie myCookiesMuahahaha push stolenCookie indexOfCookie person foods findIndex this isCookie CookieStealer stealCookies george The CookieStealer comes out of the blue to steal his cookies The CookieStealer now has the cookies in his storage Cookie name cookie points flavor chocolateChip Cookie name cookie points flavor sugar Cookie name cookie points flavor butter Cookie name cookie points flavor bakingSoda Cookie name cookie points flavor fruity George Human foods Food name apple points Food name banana points If we were to rewind back and introduce our savior Superman to apply one of his methods that implement the Proxy pattern to prevent the CookieStealer from his evil acts it would solve our issue class Superman protectFromCookieStealers obj key let realFoods obj key let fakeFoods realFoods return new Proxy obj get target prop if key prop fakeFoods fakeFoods Object defineProperty fakeFoods splice get return function fakeSplice index removeCount fakeFoods fakeFoods return fakeFoods splice index removeCount return fakeFoods return target prop const superman new Superman const slickGeorge superman protectFromCookieStealers george foods Our friend superman luckily happens to have a protectFromCookieStealers using the power of the Proxy to fake a list of cookies He keeps the real collection of foods that contain george s cookies hidden away from the CookieStealer CookieStealer proceeds with his evil plans and is seemingly tricked into thinking he got away with the cookies CookieStealer stealCookies slickGeorge console log CookieStealer cookies The CookieStealer walks away with cookies in his storage still and thinks he got away with it Cookie name cookie points flavor chocolateChip Cookie name cookie points flavor sugar Cookie name cookie points flavor butter Cookie name cookie points flavor bakingSoda Cookie name cookie points flavor fruity Little does he know that he was tricked by superman and those were fake cookies george still has his cookies untouched thanks to the power of Proxy saving him from the darkness of evil console log slickGeorge Human foods Food name apple points Food name banana points Cookie name cookie points flavor chocolateChip Cookie name cookie points flavor sugar Cookie name cookie points flavor butter Cookie name cookie points flavor bakingSoda Cookie name cookie points flavor fruity ConclusionI hope this helped shed some light on the Proxy pattern and how to take advantage of this concept using the now built in Proxy class in JavaScript That concludes the end of this post I hope you found this article helpful to you and make sure to follow me on medium for future posts Find me on medium	2022-04-05 14:24:37
海外TECH	DEV Community	Practice Spelling Bees with Spelling Hero	https://dev.to/deepgram/practice-spelling-bees-with-spelling-hero-2fcb	Practice Spelling Bees with Spelling HeroThe Scripps National Spelling Bee is America s longest running educational competition its primary goal being to help young people increase the size of their vocabulary through practice and a friendly competitive atmosphere The team behind Spelling Hero wanted to simulate this great educational experience in the browser I sat down with Judah Daniels Leon Zhang Saksham Shah and Saomiyan Mathetharan to ask them about their project Spelling Hero is a spelling bee simulator to emulate the experience of participating in a spelling bee competition Users select a difficulty level and the browser speaks a word aloud Players then have to spell out the word to complete the level Spelling Hero s data was manually curated in this first version and each word also includes a definition origin type and a sample sentence all options given to spelling bee participants The team used the Deepgram Speech Recognition API to understand a user s voice input basing their code on our Browser Live Transcription tutorial The user interface was built with P js see our P js tutorial here and you can check out the code on GitHub	2022-04-05 14:14:17
海外TECH	DEV Community	Tip: Watch out for mutable default arguments in Python	https://dev.to/trinityyi/tip-watch-out-for-mutable-default-arguments-in-python-d44	Tip Watch out for mutable default arguments in PythonDefault arguments in Python are evaluated only once The evaluation happens when the function is defined instead of every time the function is called This can inadvertently create hidden shared state if you use a mutable default argument and mutate it at some point This means that the mutated argument is now the default for all future calls to the function as well Take the following code as an example Every call to the function shares the same list So the second time it s called the function doesn t start out with an empty list Instead the default argument is the list containing the value from the previous call def append n l l append n return lappend append If you absolutely need to use a mutable object as the default value in a function you can set the default value of the argument to None instead Then checking in the function body if it is None you can set it to the mutable value you want without side effects def append n l None if l is None l l append n return lappend append Do you like short high quality code snippets and articles So do we Visit seconds of code for more articles like this one or follow us on Twitter for daily JavaScript React and Python snippets ‍	2022-04-05 14:07:56
Apple	AppleInsider - Frontpage News	Apple TV+ dark comedy 'Physical' season two premieres June 3	https://appleinsider.com/articles/22/04/05/apple-tv-dark-comedy-physical-season-two-premieres-june-3?utm_medium=rss	Apple TV dark comedy x Physical x season two premieres June Apple TV has provided a first look at season two of Physical before it debuts on June Rose Byrne in season two of Physical Physical is a dark comedy series following Sheila Rubin played by Rose Byrne as she builds a fitness empire in the s Season two picks up just as Sheila s first fitness video has launched Read more	2022-04-05 14:43:00
Apple	AppleInsider - Frontpage News	Plex unveils new cross-platform discovery, watchlist features	https://appleinsider.com/articles/22/04/05/plex-unveils-new-cross-platform-discovery-watchlist-features?utm_medium=rss	Plex unveils new cross platform discovery watchlist featuresPlex has announced a pair of new features to its platform on Apple TV and Android TV that will make it easier to find and watch content from across different streaming services in one place Credit PlexThe new Plex Discover and Universal Watchlist features will allow users to search for titles across services like Apple TV Netflix Amazon Video and more From there users will create a customized cross platform watchlist and view their favorite shows movies and other content Read more	2022-04-05 14:31:48
Apple	AppleInsider - Frontpage News	Apple CEO Tim Cook's keynote speech will kick off the IAPP Global Privacy Summit	https://appleinsider.com/articles/22/04/05/apple-ceo-tim-cook-headline-speaker-at-iapps-global-privacy-summit?utm_medium=rss	Apple CEO Tim Cook x s keynote speech will kick off the IAPP Global Privacy SummitThe keynote address for IAPP s Global Privacy Summit will be provided by Apple CEO Tim Cook to kick off the event on April Tim Cook will speak during IAPP Global Privacy SummitThe International Association of Privacy Professionals or IAPP hosts an annual event called the Global Privacy Summit It calls itself the most comprehensive data privacy event on the planet and Apple CEO Tim Cook will headline the keynote address Read more	2022-04-05 14:18:11
Apple	AppleInsider - Frontpage News	Daily deals April 5: $200 off 14-inch M1 Pro MacBook Pro, $50 off 10.2-inch iPad, $49 off Apple Watch SE, more	https://appleinsider.com/articles/22/04/05/daily-deals-april-5-200-off-14-inch-m1-pro-macbook-pro-50-off-102-inch-ipad-49-off-apple-watch-se-more?utm_medium=rss	Daily deals April off inch M Pro MacBook Pro off inch iPad off Apple Watch SE moreTuesday s top deals include off inch M Pro MacBook Pro GB GB off inch iPad th gen Wi Fi GB off Apple Watch SE GPS mm and much more inch M Pro MacBook Pro inch iPad th gen and Apple Watch SE GPS mm are on sale todayEvery day we scour the internet to find the best tech deals available including discounts on Apple products tech accessories and a variety of other items all to help you save some cash If an item is out of stock you may still be able to order it for delivery at a later date Many of the discounts are likely to expire soon though so act fast Read more	2022-04-05 14:13:40
Apple	AppleInsider - Frontpage News	#AppleToo founders in legal battle accusing each other of harassment	https://appleinsider.com/articles/22/04/05/appletoo-founders-in-legal-battle-accusing-each-other-of-harassment?utm_medium=rss	AppleToo founders in legal battle accusing each other of harassmentThe two founders of the anti harassment campaign AppleToo are embroiled in a complex series of accusations against each other which have resulted in a restraining order Ashley Gjovik left source LinkedIn and Cher Scarlett source GoFundMe Apple software engineer Cher Scarlett and senior manager Ashley Gjovik spearheaded the AppleToo movement in It gave a voice and an outlet to reportedly hundreds of women who have been discriminated against in Apple Read more	2022-04-05 14:05:05
海外TECH	Engadget	Nikon Z9 review: A versatile camera with solid 8K video recording	https://www.engadget.com/nikon-z-9-mirrorless-camera-review-143006924.html?src=rss	Nikon Z review A versatile camera with solid K video recordingWith Sony and Canon dominating headlines Nikon has been the forgotten company in the mirrorless race That s set to change though with the launch of the megapixel Z It s an innovative professional camera that offers awesome speed incredible detail and outstanding K video capabilities Nikon is breaking some new ground with this camera too It s the first mirrorless model with no mechanical shutter relying instead on a fast sensor to minimize the jello effect that can happen with an electronic shutter The Z is not without some flaws though It s quite heavy compared to rival models like Sony s A and the lack of a fully articulating screen makes it a hard sell for videographers At for the body only it s quite expensive ーlet s see how it measures up to the competition Design and handlingThe Z is honestly a chunky camera It weighs around grams or just grams less than Nikon s D DSLR By contrast the Canon EOS R weighs grams and Sony s A is a mere grams A camera that heavy can be fatiguing but then again many professional photographers prefer big heavy cameras for stability The large size meant Nikon could include a nice big grip that imparts a feeling of security particularly with a big lens attached Like Canon s EOS R you can rotate it degrees and get matching controls and a grip allowing for easy operation in portrait mode The Z has a generous array of manual controls but I m not a big fan of the layout The AF button is positioned on the left side next to the lens which I find awkward The top display also takes up space that could ve been used for more buttons On the plus side it has a large number of programmable buttons so you can set it up the way you like If you re a longtime Nikon user you might enjoy the layout more than I did Compared to Sony and Panasonic s latest cameras the menu system is a bit too complicated Rather than dividing things into subcategories you have to scroll down for a while on certain menus to find what you need Your best bet to avoid any hassle is to program the custom menus and buttons to do what you need Steve Dent EngadgetWith million dots the inch touchscreen is relatively sharp and bright but there are a few drawbacks As mentioned it only tilts up and out to the right so self shooting or vlogging is impossible unless you have an external display Sony s A also lacked a fully articulating display but Canon has finally included one in its professional EOS R model The EVF s resolution is a bit disappointing for a camera this expensive at just million dots compared to million on the Sony A Considering the high res sensor that seems like a miss On the plus side it uses “Dual Stream tech to send data to the sensor and EVF simultaneously As a result you get blackout free performance during all shooting and according to Nikon that comes with zero frame skipping or repeating That s likely a light dig at some Sony cameras which drop the EVF resolution under certain shooting conditions Nikon has gone all in on CFexpress for the Z with two CFexpress and no SD card slots This is smart for a couple of reasons There s no compromise on speed for burst shooting or video which is crucial for high frame rates required for ProRes HQ and down the road RAW video It also means that professional shooters can record to two cards at once for a backup with no compromise on speed The downside of course is that CFexpress and XQD cards are much more expensive than SD cards Other features include a huge EN ELD battery that delivers a solid shots on a charge and over two hours of K video as well as backward compatibility with D and other Nikon pro DSLR batteries It also comes with a USB C slot for both transfers and storage mic and headphone jacks an Ethernet port for remote shooting and a full sized HDMI jack While the Z doesn t have a mechanical shutter it does have a cover to protect the sensor when you change lenses PerformanceSteve Dent EngadgetThe Z is Nikon s fastest mirrorless camera to date You can shoot up to RAW frames per second at full resolution JPEGs or a blindingly fast JPEGS per second at a lower MP resolution Again all of those speeds are in electronic shutter mode because there s no mechanical shutter You can of course shoot in silent mode or activate a simulated shutter sound if you really need to hear that “click That s fast but I managed just lossless RAW photos with a very fast CFexpress card before the buffer filled If you re fine using the lossy “high efficiency modes however you can shoot anywhere from to nearly infinite photos without stopping The hybrid phase detect autofocus is a big improvement over the last model too Nikon has brought D tracking over from its DSLRs but it s far better in the Z because it has AF tracking points far more than the others have It delivers very reliable subject tracking most of the time Normally you just set the tracking point on an athlete or other fast moving subject and the AF will keep them in focus Occasionally it will drop the subject and focus on the background or something else particularly with birds or other fast objects In general it works as well or nearly as well as the subject tracking AF on Sony s latest A and A IV models Steve Dent EngadgetThe new face eye vehicle and animal detection is incredibly fast and accurate as well even if the subject is a good distance away In fact the Z can recognize nine types of subjects automatically human eyes faces heads and upper bodies animal eyes heads and bodies and cars planes trains and motorbikes I didn t have a chance to test all of those but for several different subjects even at high burst speeds most of my shots were in focus With no mechanical shutter fast readout speeds are key to reducing skew and other issues Happily the Z s stacked backside illuminated CMOS sensor is up to the job I never saw any rolling shutter unless I really whipped the camera around So even for sports or bird photography you re not likely to see any issues At the same time the axis in body stabilization reduces blurry shots due to camera movement or hand shake The six stops of shake reduction are well below the Canon EOS R s stops however Image qualityWith megapixels on tap the Z delivers sharp images with very high dynamic range In fact next to all rivals it s second only to Nikon s own Z II which is the current dynamic range champion and packs a similar sensor All RAW images are now captured with bit color depth giving you plenty of room to tweak them in Adobe Lightroom or Nikon s NX Studio Color accuracy is better than I ve seen on previous models possibly thanks to the Nikon Z s new Expeed processor that brings improvements to white balance However skin tones aren t quite as warm as with Canon s R or R JPEG images look nice straight out of the camera though they can be slightly over sharpened with the default settings The Z has a wide ISO range of expandable to The low setting is nice to have in bright sunlight if you want to avoid completely closing down the iris which can hurt image quality It performs pretty well in low light too Grain is well controlled up to about ISO and shots are usable at ISO Beyond that noise starts to get distracting The Z is about the same as Canon s R in that regard but not up to the level of Sony s AR IV or A VideoThe Z is Nikon s most competent video camera to date and by far For starters it can record K H for up to two hours without any overheating or other issues That s something Canon s smaller EOS R can t do though it is cheaper The Z can shoot very sharp K at up to fps by oversampling the full width of the sensor and up to fps with continuous autofocus and sound Right now you can record K using ProRes HQ a widely used format that creates large files but is easy to edit It also records in H bit mode for K and K video Meanwhile Nikon s N Log mode lets you max out dynamic range so you can easily adjust shadows and highlights when editing There s more to come though In a future firmware update Nikon will offer K p internal RAW video using a format called TicoRaw When it arrives later this year it ll let you capture minutes of lossless bit K RAW video and minutes of visually lossless K to a TB card As with photos video autofocus is fast reliable and can track a subject s face even if they re fairly far away It also follows subjects smoothly when they re moving toward the camera though you may have to tweak the AF speed Unfortunately the only way to find or use that setting is to dive into the menus Hopefully Nikon will let you assign it to a button in a future upgrade Steve Dent EngadgetRolling shutter is more prominent in video than stills particularly at the K and K oversampled resolutions However it s still not nearly as bad on some cameras looking at you Sony s A IV thanks to the extremely fast sensor readout speeds It s not even really noticeable unless you whip pan the camera or have a fast moving subject K and K oversampled video is extremely sharp Quality drops a hair at the higher frame rate K settings when pixel binning kicks in but it s nothing you d notice unless you re looking for it Colors are accurate but again skin tones aren t quite as pretty as on Canon s latest models Dynamic range is also top notch particularly in the ISO range in ProRes mode making it easy to adjust shadows and highlights in post If you love shooting ProRes footage be sure to get some high capacity CFexpress cards because the file sizes can get huge they take around GB for minutes of K p ProRes HQ footage Wrap upSteve Dent EngadgetThe Z is Nikon s most versatile and powerful mirrorless camera yet and the lack of a mechanical shutter is a non issue It s particularly strong for video and will be a powerhouse once the RAW video firmware update arrives However Nikon s decision to not use a fully articulating screen is a shame considering all this awesome video capability The Z s main rival is Sony s A which offers similar shooting speeds resolution and video capabilities The Z is cheaper and will eventually have higher K frame rates with the upcoming firmware update However your choice may come down to whether you prefer Sony or Nikon s camera systems Another option is Canon s EOS R With just a MP sensor though it s designed primarily for sports so it s not ideal for studio or landscape work Overall the Z is a great choice for pros who don t want to compromise on any kind of shooting whether that s photos or video	2022-04-05 14:30:06
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