Đánh giá sony a7r

     
Basic Specifications Full model name:Resolution:Sensor size:Kit Lens:Viewfinder:Native sầu ISO: Extended ISO: Shutter:Dimensions:Weight:Availability:Manufacturer:Full specs:
Sony Altrộn ILCE-A7R IV
61.00 Megapixels
35mm(35.7milimet x 23.8mm)
n/a
EVF / LCD
100 - 32,000
50 - 102,400
1/8000 - 30 sec
5.1 x 3.8 x 3.1 in.(129 x 96 x 78 mm)
23.5 oz(665 g)includes batteries
09/2019
Sony
Sony A7R IV specifications

61.00Megapixels Sony E35mmform size sensor
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A7R IV Summary

The Sony A7R IV is a thoroughly impressive sầu camera. Its high-res 61MPhường sensor captures images with incredible detail. Plus, with swift burst shooting, top-notch high ISO performance, fast AF, Real-Time Eye AF tracking, 4Kp30 video and in-body toàn thân image stabilization, the Sony A7R IV is way more versatile that one might think. The image files, however, are cumbersome, and the resolution is likely more than what most people need. And at around $3500 body-only, the A7R IV certainly isn't cheap. However, given all that it offers, it's hard not to lớn recommkết thúc the A7R IV if you have sầu the cash & need the resolving power.

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Pros

Outstanding image quality; Excellent high ISOs; Fast AF performance with Eye-AF tracking; 10fps bursts at full-resolution; Improved ergonomics; Dual UHS-II card slots; Higher-res EVF.

Cons

Expensive; No 4Kp60; Buffer clearing could be faster; Menus are still frustrating; Touchscreen underutilized; No built-in flash.

Price & availability

The Sony A7R IV went on sale in September 2019 with a price of $3,500 USD ($4,500 CAD). A new vertical battery grip, the VG-C4EM, which holds a pair of batteries và includes the same upgraded grip, operability & weather-resistance as the A7R IV toàn thân sells for $400 USD ($530 CAD).

Imaging Resource rating

5.0out of 5.0


Sony A7R Mark IV Review


Packed with a high-res 61-megapixel full-frame image sensor, the Sony A7R Mark IV is, without a doubt, a beast of a camera -- the highest resolution full-frame camera currently on the market. Its high-res sensor makes it a prime candidate for landscapes, portraiture, and other types of photographic pursuits that often require lots of detail.

But there"s much more lớn the story with the 4th-generation version of Sony"s high-resolution full-frame mirrorless camera. With fast burst shooting at full-resolution, top-notch high ISO performance, swift AF with excellent coverage across almost the entire sensor, Real-Time Eye AF tracking, 4Kp30 video, powerful in-toàn thân image stabilization & more, the Sony A7R Mark IV is way more versatile that one might think from specs alone.

Yes, the Sony A7R IV is undoubtedly a high-end camera, with a high-end price tag khổng lồ match, but it"s an extremely versatile, feature-rich camera. Much more well-rounded than its predecessors, và much more than just a stills camera for shooting high-res photos.

So let"s dive in lớn see how the Sony A7R IV performed in our testing!


Read our Sony A7R IV Conclusion
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Beyond image quality, the camera offers considerable tốc độ. Sony states that the A7R IV can capture up khổng lồ 68 full-resolution images at up khổng lồ 10 frames per second, with continuous autofocus và auto-exposure. Further, the camera includes Sony"s latest autofocus innovations, including 567 phase-detect autofocus points, real-time Eye AF và real-time Tracking AF.

For Clip users, the A7R IV can record full-width 4K UHD video clip at up khổng lồ 30p or Full HD at up to lớn 120p. And the A7R IV offers a big innovation for đoạn Clip autofocus: real-time Eye AF.

Considering the body toàn thân itself, the A7R IV may look very familiar, but it includes numerous changes. The camera has enhanced dust và moisture resistance, a redesigned grip, a new 5.76M-dot UXGA OLED electronic viewfinder & a revised control layout.


61-megapixel full-frame BSI image sensor15-stop dynamic range Native sầu ISO range of 100-32,000567 phase-detect autofocus points AI-based real-time eye-detect autofocus and subject tracking 26-megapixel APS-C mode with 325 PDAF points Full-resolution continuous shooting with AF/AE at up to 10 frames per second 4K UHD đoạn phim at up to 30 frames per second with real-time Eye AF In-body toàn thân 5-axis image stabilization promising up to lớn 5.5 stops of stabilization Can capture 240.8-megapx images using Pixel Shift Multi ShootingRevised camera kiến thiết, including a redesigned front grip Enhanced moisture và dust resistance 5.76-million dot OLED electronic viewfinder Dual UHS-II thẻ slots Digital audio interface through enhanced Multi Interface Shoe

 

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Camera design: Redesigned front grip, enhanced durability, new high-resolution EVF và more

The Sony A7R IV looks quite similar lớn its predecessor, but the Sony design team has gone baông chồng khổng lồ the drawing board in a number of key areas. For starters, the camera has enhanced dust và moisture resistance, which should mean improved ruggedness and durability. Further, many Sony shooters have long remarked that the A7 series of cameras don"t offer quite enough comfort with respect to lớn the grip. In response, Sony has revised the thiết kế of the front grip. The new grip has been designed to be more comfortable, particularly when using longer, heavier lenses. Further, the overhang area for the middle & little fingers has been increased, which should benefit users with larger hands and/or longer fingers.

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There have been additional refinements khổng lồ the layout & kiến thiết of the camera. The AF-ON button"s location, dimension và "feel" have sầu been revised khổng lồ offer smoother control. The Multi-Selector has also been revised, featuring a different shape and texture plus improved response in all eight directions. The exposure compensation dial has a new locking mechanism. Further, the touchpad autofocus responsiveness of the 3-inch type 1.44-million dot touchscreen LCD is now 1.5 times faster. Speaking of the display, it can tilt upward 107 degrees and downward 41 degrees.


The rear LCD is not the only improved display on the A7R IV. The electronic viewfinder has undergone a significant change. The new OLED Tru-Finder features 5.76 million dots và can refresh at up to 120 frames per second. Further, the 1.3-centimeter (0.5 type) UXGA OLED has 0.78x magnification, 100 percent frame coverage và a "High" chất lượng mode, which promises a sharper, more natural viewfinder experience with reduced moiré and "jaggies." The eyepiece window is coated with fluorine to help repel dirt, grime and grease và make the eyepiece easier khổng lồ clean.

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In total, the Sony A7R IV weighs approximately 23.5 ounces (665 grams) with a battery và memory thẻ included, which is less than 10 grams heavier than the A7R III. The new camera is approximately 128.9 millimeters wide, 96.4mm tall & has a maximum depth of 77.5milimet, which is slightly larger than its predecessor in each dimension.


RESOLUTION KING? First Look at Our Sony A7R IV Images

Shooting Features: Brand-new 61-megapx image sensor, improved autofocus, speedy performance & more

Image sensor và image capture

The Sony A7R IV includes the world"s first 61-megapx full-frame image sensor. Specifically, the sensor is a 62.5-megapx back-illuminated Exmore R CMOS sensor with 61.0 effective sầu megapixels. The sensor offers a native ISO range of 100 to 32,000, which can be expanded to a low of ISO 50 và a high of ISO 102,400. The image sensor, paired with a front-kết thúc LSI & Sony"s lachạy thử BIONZ X image processor, processes 16-bit images which are then output at up khổng lồ 14 bits. Output đầu ra remains at 14 bit, even when shooting in silent mode or using continuous shooting modes, save for when shooting continuous compressed raw files, which are 12 bits. Like previous Alpha models, the A7R IV does not offer a lossless compressed raw recording option.

In addition khổng lồ the 61-megapx raw image capture, the A7R IV can also shoot composite images using Sony"s Pixel Shift Multi Shooting mode. The camera offers 4- and 16-shot composite options, with the latter using 0.5-px and 1.0-px shift increments lớn allow the creation of a 240.8-megapx composite image (this image is 19,008 x 12,672 pixels in total). As has been the case with this feature in prior Sony cameras, you will need to lớn use Sony software on your computer lớn composite và utilize the files.

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Looking at aspect ratio options, the A7R IV offers its standard 3:2 (9,504 x 6,336 images) và 16:9 (9,504 x 5,344 -- 51 megapixels) aspect ratquả táo, but also adds new 4:3 (8,448 x 6,336 -- 54 megapixels) và 1:1 (6,336 x 6,336 -- 40 megapixels) options.


Leveraging its high-resolution image sensor, the A7R IV also offers an APS-C capture mode, which comes with quality autofocus advantages which we will discuss in the next section. The APS-C mode produces up to lớn a 26-megapixel image (6,240 x 4,160) in 3:2 mode.

In addition khổng lồ the new sensor, Sony has added additional sharpness/clarity picture controls, which now offers +/- 5 steps of sharpness versus the previous 3. Additional creative style settings include contrast and saturation, which are still offered in +/- 3 steps. The full menu of Creative Styles includes: Standard, Vivid, Neutral, Clear, Deep, Light, Portrait, Landscape, Sunphối, Night Scene, Autumn leaves, Blaông chồng and White & Sepia. The A7R IV also includes Picture Effects, which are comprised of: Posterization (color & blaông chồng and white), Pop màu sắc, Retro Pholớn, Partial Màu sắc, High Contrast Monochrome, Toy Camera và Soft High-key.

Like the prior Sony A7R Mark II and III cameras, the A7R IV comes equipped with in-body image stabilization. The 5-axis SteadyShot system promises up to lớn 5.5 stops of image stabilization. In addition to stabilizing at image capture, the IBIS also stabilizes the real-time view on the display và through the electronic viewfinder, which should prove sầu especially helpful when framing images while using a telephoto lớn lens.

Xem thêm: Vnreview Chọn Smartphone Tầm Trung Tốt Nhất 2016, 10 Smartphone Giá Rẻ Đáng Mua Nhất Năm 2016

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The A7R IV introduces a new shutter unit, which has been designed to capture sharp images, even at fast shooting speeds. Specifically, the shutter mechanism employs a new thiết kế & fast-response coreless motor. The new shutter features a brake and dampers, which reduce mechanical front và rear curtain vibration & absorb mechanical shoông xã. The shutter is rated for 500,000 cycles. The top shutter tốc độ remains 1/8000s with an X-sync speed of 1/250s.

Autofocus: 567 phase-detect autofocus points, real-time tracking và Eye AF and more

Building upon Sony"s existing Fast Hybrid AF, which utilizes both phase-detect and contrast-detect autofocus points, the A7R IV offers improved autofocus performance in numerous respects. The focal plane phase-detect AF system has 567 phase-detect autofocus points & 425 contrast-detect AF points, which are 168 & 170 more autofocus points than the A7R III offers, respectively. The A7R IV"s autofocus points cover approximately 99.7 percent of the vertical image area và 74 percent of the horizontal image area when shooting full-frame images. When using the APS-C shooting mode, the autofocus points cover more than the entire vertical area and nearly all of the horizontal area, allowing for improved subject tracking, especially when continuously shooting.


The A7R IV includes real-time, artificial intelligence-based autofocus, including real-time tracking. The camera utilizes color, pattern (brightness) và subject distance (depth) data in real time as part of its subject recognition và tracking algorithms. Further, the camera has real-time face detect và eye autofocus, including automatic real-time switching between face-detect & eye-detect, plus automatic (with available manual selection) left/right eye autofocus. Further, Eye AF also works with animals, which should excite pet and wildlife photographers.

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Additional autofocus features include low-light autofocus down khổng lồ -3 EV in AF-S (f/2.0 at ISO 100), the ability to lớn switch between vertical và horizontal AF areas and adjustable AF tracking sensitivity. There are also some new features, including the ability to circulate the autofocus area through the four bounds of the frame, the ability lớn select between white & red focus frame colors & improved focus peaking detection (plus a new xanh peaking color, which joins the existing red, yellow & White options).

Performance: 61-megapixel image capture with AF/AE at up lớn 10 frames per second

As discussed earlier, the A7R IV now includes dual UHS-II SD thẻ slots. This in conjunction with the new sensor, improved processing and the new shutter mechanism results in impressive shooting performance specifications. The A7R IV offers up to lớn 10 frames per second continuous shooting, even when capturing full-resolution 61-megapx files.

At 10 fps, the camera continues khổng lồ deliver real-time AF and AE. If you want "Live View", the maximum speed is reduced slightly khổng lồ 8 frames per second. With respect to the buffer depth, buffer memory has been increased by 1.5 times, which allows for a total of 68 Extra Fine/Fine JPEGs, 68 compressed raw images or 30 uncompressed raw frames to be captured in a single burst. When using the APS-C image area, buffer depth is increased by approximately 3 times.

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Considering battery life, the A7R IV promises up to 670 still images on a single charge when using the rear display & 530 shots when using the electronic viewfinder. For đoạn phim, the A7R IV is rated for up to lớn 170 minutes of continuous recording when using the monitor. When needing additional battery life, you can attach the new VG-C4EM vertical grip, which holds a pair of NP-FZ100 batteries roughly doubling battery life, or charge the camera using a thiết bị di động battery via its USB Type-C và Multi/Micro USB connectors.


Connectivity và workflow features

The A7R IV has been designed to offer better connectivity and workflow options for working professionals in particular. We have already touched on the dual UHS-II SD thẻ slots, although these have sầu come at the cost of losing Memory Stichồng Duo support (a feature we suspect few will miss), & the A7R IV also offers new wireless features. The camera has built-in Wi-Fi (with NFC), which now comes with 2.4 GHz and 5 GHz band tư vấn, Công nghệ Bluetooth version 4.1 (2.4 GHz band) và a new wireless tethering option. The A7R IV supports a new wireless remote commander, the RMT-P1BT, over Bluetooth không dây as well.


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For wired connections, the camera has a Multi/Micro USB terminal, USB Type-C, HDXiaoMI micro (Type-D), a sync terminal and 3.5 mm microphone & tai nghe terminals. Further, the camera features an enhanced Multi Interface Shoe, which supports a new digital audio interface -- more on that in the next section. When considering image transfer options, there is a new FTP.. background transfer and the USB Type-C port offers 2x faster transfer speeds than the A7R III.

In terms of the user experience, the A7R IV now includes the ability to assign custom functions lớn the front and rear commvà dials plus the control wheel on the rear of the camera. This means that when using My Dial custom settings, you can choose from 113 different functions khổng lồ assign lớn these three dials plus any of the other user-assignable buttons on the camera toàn thân. The user can create independent function sets for stills, movies and playbaông xã. Further changes include expanded setting registration options, auto white balance loông chồng and expanded white balance control.

Video: 4K đoạn phim at up to lớn 30 fps, 1trăng tròn fps Full HD và real-time eye AF highlight impressive sầu đoạn Clip features

The Sony A7R IV can record 4K (3,840 x 2,160) video clip at up khổng lồ 30 frames per second in XAVC S & AVCHD video formats. Bit rates are offered up lớn 100 Mbps in XAVC S 4K format. While full sensor width recording is available for 4K đoạn Clip, when using Super 35 mode, the camera captures 6K footage & downsamples it to lớn 4K, utilizing full pixel readout without pixel binning or line skipping, for improved detail and fewer artifacts.


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Regarding autofocus performance during video, the A7R IV utilizes a refined autofocus system, which promises faster, smoother và more stable autofocus during video recording. Further, the camera introduces real-time Eye AF and cảm ứng Tracking autofocus features during recording.

While video clip chất lượng is important, audio quality matters a lot too. The A7R IV"s enhanced Multi Interface Shoe adds a new digital audio interface, which gives users the option khổng lồ record digital audio directly inlớn the tệp tin when recording.

The A7R IV offers the new ability lớn assign XAVC S file name prefixes, which should prove helpful for pros using multiple camera bodies as part of their đoạn phim workflow. Additional workflow features include a Hybrid Log-Gamma (HLG) picture profile, S-Log 3 for 14-stop dynamic range, picture profiles, clean HDXiaoMi MI, time code/user bit, REC control, Gamma Display Assist, zebra function và more.

For users demanding high-tốc độ Clip in addition khổng lồ pure resolving capability, the A7R IV can record Full HD (1,9trăng tròn x 1,080) video clip at frame rates ranging from 1 frame per second to lớn 1trăng tròn fps. This allows for up khổng lồ 5x slow motion video clip and 60x quiông xã motion Clip.

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Pricing và availability: The Sony A7R IV arrives this fall for $3,500

The Sony A7R IV hit store shelves in September with a price of $3,500 USD ($4,500 CAD). A new vertical battery grip, the VG-C4EM, which holds a pair of batteries và includes the same upgraded grip, operability và weather-resistance as the A7R IV toàn thân sells for $400 USD ($530 CAD).

You can order your Sony A7R IV using our affiliate links now!

 


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Sony might not have sầu straight-up called it a competitor lớn medium format cameras, but the new A7R Mark IV, complete with the world"s first 61-megapixel full-frame sensor, might as well be, at least lớn some degree. However, the A7R IV is more than just a "simple" high-resolution camera, as it sports enough processing power to lớn capture full-resolution images at up khổng lồ 10fps, offers fast real-time Eye AF focusing, well over 500 phase-detect AF points và 4Kp30 đoạn Clip recording with Eye AF. Indeed, the Sony A7R IV is as versatile as it is packed with megapixels.

On the physical side of things, Sony"s 4th-generation, high-resolution, full-frame mirrorless camera undergoes a few cosmetic và structural improvements compared to lớn the previous iteration. However, the camera overall isn"t drastically different in terms of handling & control layout.

Let"s dive in to see just how well this camera performs in real-world shooting...


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Print Quality Summary: Yet another fantastic showing for Sony"s A7R-series in our print quality analysis! The 61MP.. sensor inside the A7R Mark IV is a print-making powerhouse. The kết thúc. All the way up to ISO 1600, you"re basically limited by your creativity & printing needs in how large you can print. Our print testing tops out at 30 x 40 inches, và the A7R IV easily makes fantastic prints at this large kích thước from extended low ISO 50 up to lớn ISO 1600. Noise remains extremely low throughout this ISO range, fine detail is excellent và colors are vibrant. As the ISO rises, the image processing & in-camera noise reduction with JPEGs does an excellent job of controlling noise while retailing lots & lots of crisp detail. As such, even up to lớn ISO 25,600, the A7R IV can print up lớn an 8 x 10 inch print -- a rare feat for the vast majority of cameras. Going further up the ISO scale, noise does start khổng lồ take its toll on resolving power, with a 4 x 6 print being the maximum print form size at ISO 51,200 -- which is still quite impressive given that this is also an extended high ISO. At the highest ISO of 102,400, the images are very noisy & too soft overall khổng lồ be usable for print-making.


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Here are crops from our laboratory Still Life target comparing the Sony A7R Mark IV"s JPEG image quality to its predecessor, the A7R Mark III. We"ve also compared the A7R IV to a couple of high-resolution cameras from Canon và Nikon, namely the Canon 5DS R and Nikon Z7, as well as to lớn Fuji"s GFX 50S and the Panasonic S1R.

NOTE: These images are from best chất lượng JPEGs straight out of the camera, at mặc định settings including noise reduction & using the camera"s actual base ISO (not extended ISO settings). All cameras in this comparison were shot with our very sharp reference lenses. Clicking any crop will take you lớn a carrier page where you can click once again khổng lồ access the full resolution image as delivered straight from the camera.


Chuyên mục: Tin Tức