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Sony A77 II vs Nikon D850

The Sony Alpha SLT-A77 II and the Nikon D850 are two digital cameras that were officially introduced, respectively, in May 2014 and July 2017. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (A77 II) and a full frame (D850) sensor. The Sony has a resolution of 24 megapixels, whereas the Nikon provides 45.4 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Sony A77 II
versus
Nikon D850
Sony A77 II   Nikon D850
Digital single lens reflex Digital single lens reflex
Sony A mount lenses Nikon F mount lenses
24 MP – APS-C sensor 45.4 MP – Full Frame sensor
1080/60p Video 4K/30p Video
ISO 100-25,600 (50 - 51,200) ISO 64-25,600 (32 - 102,400)
Electronic viewfinder (2359k dots) Optical viewfinder
3.0" LCD – 1229k dots 3.2" LCD – 2359k dots
Fully flexible screen (no touchscreen) Tilting touchscreen
12 shutter flaps per second 9 shutter flaps per second
In-body stabilizationLens stabilization only
Weathersealed bodyWeathersealed body
480 shots per battery charge1840 shots per battery charge
143 x 104 x 81 mm, 647 g 146 x 124 x 79 mm, 1005 g
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Check A77 II offers at
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Check D850 price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha SLT-A77 II and the Nikon D850? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

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Body comparison

An illustration of the physical size and weight of the Sony A77 II and the Nikon D850 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All size dimensions are rounded to the nearest millimeter.

Size Sony A77 II vs Nikon D850
Compare A77 II versus D850 top
Comparison A77 II or D850 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon D850 is notably larger (22 percent) than the Sony A77 II. Moreover, the D850 is substantially heavier (55 percent) than the A77 II. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the A77 II gets 480 shots out of its Sony NP-FM500H battery, while the D850 can take 1840 images on a single charge of its Nikon EN-EL15a power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

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Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Sony A77 II 143 mm 104 mm 81 mm 647 g 480 Y May 2014 1,199ebay.com
2.
 
Nikon D850 146 mm 124 mm 79 mm 1005 g 1840 Y Jul 2017 3,299 amazon.com
3.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699ebay.com
4.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699ebay.com
5.
 
Nikon D5 160 mm 159 mm 92 mm 1415 g 3780 Y Jan 2016 6,499ebay.com
6.
 
Nikon D7200 136 mm 107 mm 76 mm 765 g 1110 Y Mar 2015 1,199ebay.com
7.
 
Nikon D810 146 mm 123 mm 82 mm 980 g 1200 Y Jun 2014 3,299ebay.com
8.
 
Nikon D7100 136 mm 107 mm 76 mm 765 g 950 Y Feb 2013 1,199ebay.com
9.
 
Nikon D610 141 mm 113 mm 82 mm 850 g 900 Y Oct 2013 1,999ebay.com
10.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099ebay.com
11.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299ebay.com
12.
 
Sony A6600 120 mm 67 mm 69 mm 503 g 810 Y Aug 2019 1,399 amazon.com
13.
 
Sony A6500 120 mm 67 mm 53 mm 453 g 350 Y Oct 2016 1,399ebay.com
14.
 
Sony A68 143 mm 104 mm 81 mm 610 g 540 n Nov 2015 699ebay.com
15.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999ebay.com
16.
 
Sony A58 129 mm 95 mm 78 mm 492 g 690 n Feb 2013 599ebay.com
17.
 
Sony A77 143 mm 104 mm 81 mm 732 g 470 Y Aug 2011 1,399ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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Any camera decision will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The A77 II was launched at a markedly lower price (by 64 percent) than the D850, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.

Sensor comparison

The size of the imaging sensor is a crucial determinant of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Sony A77 II features an APS-C sensor and the Nikon D850 a full frame sensor. The sensor area in the D850 is 134 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Sony A77 II and Nikon D850 sensor measures

With 45.4MP, the D850 offers a higher resolution than the A77 II (24MP), but the D850 nevertheless has larger individual pixels (pixel pitch of 4.35μm versus 3.91μm for the A77 II) due to its larger sensor. Moreover, the D850 is a much more recent model (by 3 years and 2 months) than the A77 II, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the D850 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Nikon D850 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D850 for good quality output (200 dots per inch) amounts to 41.3 x 27.5 inches or 104.9 x 69.9 cm, for very good quality (250 dpi) 33 x 22 inches or 83.9 x 55.9 cm, and for excellent quality (300 dpi) 27.5 x 18.3 inches or 69.9 x 46.6 cm. The corresponding values for the Sony A77 II are 30 x 20 inches or 76.2 x 50.8 cm for good quality, 24 x 16 inches or 61 x 40.6 cm for very good quality, and 20 x 13.3 inches or 50.8 x 33.9 cm for excellent quality prints.

The Sony Alpha SLT-A77 II has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 50-51200. The corresponding ISO settings for the Nikon D850 are ISO 64 to ISO 25600, with the possibility to increase the ISO range to 32-102400.

In terms of underlying technology, the A77 II is build around a CMOS sensor, while the D850 uses a BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

A77 II versus D850 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under consideration, the D850 offers substantially better image quality than the A77 II (overall score 18 points higher). The advantage is based on 2 bits higher color depth, 1.4 EV in additional dynamic range, and 1.4 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

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Sensor Characteristics
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Sony A77 II APS-C 24.0 6000 40001080/60p24.413.4101382
2.
 
Nikon D850 Full Frame 45.4 8256 55044K/30p26.414.82660100
3.
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.4238187
4.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.4230886
5.
 
Nikon D5 Full Frame 20.7 5588 37124K/30p25.112.3234388
6.
 
Nikon D7200 APS-C 24.0 6000 40001080/60p24.514.6133387
7.
 
Nikon D810 Full Frame 36.2 7360 49121080/60p25.714.8285397
8.
 
Nikon D7100 APS-C 24.0 6000 40001080/60p24.213.7125683
9.
 
Nikon D610 Full Frame 24.2 6016 40161080/30p25.114.4292594
10.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
11.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
12.
 
Sony A6600 APS-C 24.0 6000 40004K/30p23.813.4149782
13.
 
Sony A6500 APS-C 24.0 6000 40004K/30p24.513.7140585
14.
 
Sony A68 APS-C 24.0 6000 40001080/60i24.113.570179
15.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
16.
 
Sony A58 APS-C 19.8 5456 36321080/60i23.312.575374
17.
 
Sony A77 APS-C 24.0 6000 40001080/60p24.013.280178
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Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the D850 provides a better video resolution than the A77 II. It can shoot movie footage at 4K/30p, while the Sony is limited to 1080/60p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A77 II has an electronic viewfinder (2359k dots), while the D850 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the D850 has a higher magnification than the one of the A77 II (0.75x vs 0.73x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Sony A77 II and Nikon D850 along with similar information for a selection of comparators.

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Core Features
# image Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Sony A77 II2359 Y3.0 / 1229 full-flex n 1/8000s 12.0/s Y Y
2.
 
Nikon D850optical Y3.2 / 2359 tilting Y 1/8000s 9.0/s n n
3.
 
Canon 5DSoptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
4.
 
Canon 5DS Roptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
5.
 
Nikon D5optical Y3.2 / 2359 fixed Y 1/8000s 14.0/s n n
6.
 
Nikon D7200optical Y3.2 / 1229 fixed n 1/8000s 6.0/s Y n
7.
 
Nikon D810optical Y3.2 / 1229 fixed n 1/8000s 5.0/s Y n
8.
 
Nikon D7100optical Y3.2 / 1229 fixed n 1/8000s 6.0/s Y n
9.
 
Nikon D610optical Y3.2 / 921 fixed n 1/4000s 6.0/s Y n
10.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3/s n Y
11.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3/s Y Y
12.
 
Sony A66002359 n3.0 / 922 tilting Y 1/4000s 11.0/s n Y
13.
 
Sony A65002359 n3.0 / 922 tilting Y 1/4000s 11.0/s Y Y
14.
 
Sony A681440 Y2.7 / 460 tilting n 1/4000s 8.0/s Y Y
15.
 
Sony A7 II2400 n3.0 / 1230 tilting n 1/8000s 5.0/s n Y
16.
 
Sony A581440 n2.7 / 460 tilting n 1/4000s 5.0/s Y Y
17.
 
Sony A772359 Y3.0 / 921 full-flex n 1/8000s 12.0/s Y Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One difference between the cameras concerns the presence of an on-board flash. The A77 II has one, while the D850 does not. While the built-in flash of the A77 II is not very powerful, it can at times be useful as a fill-in light.

The A77 II has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the D850 does not have a selfie-screen.

The Nikon D850 has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

The A77 II writes its imaging data to SDXC or Memory Stick PRO Duo cards, while the D850 uses SDXC or XQD cards. The D850 features dual card slots, which can be very useful in case a memory card fails. In contrast, the A77 II only has one slot. The D850 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the A77 II can use UHS-I cards (up to 104 MB/s).

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Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Sony Alpha SLT-A77 II and Nikon D850 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Sony A77 IIYstereo / monoY-mini2.0YY-
2.
 
Nikon D850Ystereo / monoYYmini3.0YYY
3.
 
Canon 5DSYmono / monoY-mini3.0---
4.
 
Canon 5DS RYmono / monoY-mini3.0---
5.
 
Nikon D5Ystereo / monoYYmini3.0---
6.
 
Nikon D7200Ystereo / monoYYmini2.0YY-
7.
 
Nikon D810Ystereo / monoYYmini3.0Y--
8.
 
Nikon D7100Ystereo / monoYYmini2.0---
9.
 
Nikon D610Ymono / monoYYmini2.0---
10.
 
Pentax K-3 IIYmono / monoYYmini3.0---
11.
 
Pentax K-3Ymono / monoYYmini3.0---
12.
 
Sony A6600Ystereo / monoYYYES2.0YYY
13.
 
Sony A6500Ystereo / monoY-micro2.0YY-
14.
 
Sony A68Ystereo / monoY-micro2.0---
15.
 
Sony A7 IIYstereo / monoYYmicro2.0YY-
16.
 
Sony A58Ystereo / monoY-mini2.0---
17.
 
Sony A77Ystereo / monoY-mini2.0---
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It is notable that the D850 has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The A77 II lacks such a headphone port.

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

The D850 is a recent model that features in the current product line-up of Nikon. In contrast, the A77 II has been discontinued (but can be found pre-owned on ebay). There has not been a direct replacement model for the A77 II from Sony. Further information on the features and operation of the A77 II and D850 can be found, respectively, in the Sony A77 II Manual (free pdf) or the online Nikon D850 Manual.

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Review summary

So what conclusions can be drawn? Is there a clear favorite between the Sony A77 II and the Nikon D850? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

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Advantages of the Sony Alpha SLT-A77 II:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (12 vs 9 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (143x104mm vs 146x124mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 358g or 36 percent) and hence easier to carry around.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (64 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in May 2014).

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Arguments in favor of the Nikon D850:

  • More detail: Has more megapixels (45.4 vs 24MP), which boosts linear resolution by 38%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (18 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (2 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (1.4 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (1.4 stops ISO advantage).
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.75x vs 0.73x).
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (2359k vs 1229k dots).
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Gets more shots (1840 versus 480) out of a single battery charge.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More modern: Reflects 3 years and 2 months of technical progress since the A77 II launch.

If the number of relative strengths (bullet points above) is taken as a guide, the D850 is the clear winner of the contest (20 : 11 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

A77 II 11:20 D850

How about other alternatives? Do the specifications of the Sony A77 II and the Nikon D850 place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the A77 II or the D850 perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

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Expert Camera Reviews
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Sony A77 II4/5....80/1004.5/55/5 May 2014 1,199ebay.com
2.
 
Nikon D8504.5/5+ +5/589/1004.5/55/5 Jul 2017 3,299 amazon.com
3.
 
Canon 5DS..+..83/1004.5/54.5/5 Feb 2015 3,699ebay.com
4.
 
Canon 5DS R5/5+..83/1005/54.5/5 Feb 2015 3,699ebay.com
5.
 
Nikon D5....4/589/1004.5/55/5 Jan 2016 6,499ebay.com
6.
 
Nikon D72004/5+ +..84/1004.5/54.5/5 Mar 2015 1,199ebay.com
7.
 
Nikon D8105/5..5/586/1005/54.5/5 Jun 2014 3,299ebay.com
8.
 
Nikon D71005/5+ +..85/1004.5/54.5/5 Feb 2013 1,199ebay.com
9.
 
Nikon D6104/5+ +..87/1004.5/54.5/5 Oct 2013 1,999ebay.com
10.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 1,099ebay.com
11.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 1,299ebay.com
12.
 
Sony A66004/5+4/583/1004.5/54/5 Aug 2019 1,399 amazon.com
13.
 
Sony A65005/5+ +3.5/585/1004.5/54.5/5 Oct 2016 1,399ebay.com
14.
 
Sony A683/5......4/54/5 Nov 2015 699ebay.com
15.
 
Sony A7 II5/5+4/582/1004.5/55/5 Nov 2014 1,999ebay.com
16.
 
Sony A583/5......4.5/54.5/5 Feb 2013 599ebay.com
17.
 
Sony A775/591/100..81/100..5/5 Aug 2011 1,399ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

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Check A77 II offers at
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Check D850 price at
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Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Sony A77 II vs Nikon D850

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Sony A77 II Nikon D850
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Sony A mount lenses Nikon F mount lenses
    Launch Date May 2014 July 2017
    Launch Price USD 1,199 USD 3,299
    Sensor Specs Sony A77 II Nikon D850
    Sensor Technology CMOS BSI-CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 23.5 x 15.6 mm 35.9 x 23.9 mm
    Sensor Area 366.6 mm2 858.01 mm2
    Sensor Diagonal 28.2 mm 43.1 mm
    Crop Factor 1.5x 1.0x
    Sensor Resolution 24 Megapixels 45.4 Megapixels
    Image Resolution 6000 x 4000 pixels 8256 x 5504 pixels
    Pixel Pitch 3.91 μm 4.35 μm
    Pixel Density 6.55 MP/cm2 5.30 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 1080/60p Video 4K/30p Video
    ISO Setting 100 - 25,600 ISO 64 - 25,600 ISO
    ISO Boost 50 - 51,200 ISO 32 - 102,400 ISO
    Image Processor BIONZ X EXPEED 5
    DXO Sensor Quality (score) 82 100
    DXO Color Depth (bits) 24.4 26.4
    DXO Dynamic Range (EV) 13.4 14.8
    DXO Low Light (ISO) 1013 2660
    Screen Specs Sony A77 II Nikon D850
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.73x 0.75x
    Viewfinder Resolution 2359k dots
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 1229k dots 2359k dots
    LCD Attachment Fully flexible screen Tilting screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Sony A77 II Nikon D850
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing AidFocus Peakingno Peaking Feature
    Continuous Shooting 12 shutter flaps/s 9 shutter flaps/s
    Shutter Life Expectancy150 000 actuations200 000 actuations
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium MS or SDXC cards SDXC or XQD cards
    Single or Dual Card Slots Single card slot Dual card slots
    UHS card support UHS-I UHS-II
    Connectivity Specs Sony A77 II Nikon D850
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 2.0 USB 3.0
    HDMI Port mini HDMI mini HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Near-Field Communication NFC built-in NFC built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Sony A77 II Nikon D850
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Sony NP-FM500H Nikon EN-EL15a
    Battery Life (CIPA)480 shots per charge1840 shots per charge
    Body Dimensions 143 x 104 x 81 mm
    (5.6 x 4.1 x 3.2 in)
    146 x 124 x 79 mm
    (5.7 x 4.9 x 3.1 in)
    Camera Weight 647 g (22.8 oz) 1005 g (35.5 oz)
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    Check D850 price at
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