ad stars
ad Bestseller
A potelyt.com – Photography & Imaging Resources
PW

Nikon D5100 vs Sony A7R III

The Nikon D5100 and the Sony Alpha A7R III are two digital cameras that were officially introduced, respectively, in April 2011 and October 2017. The D5100 is a DSLR, while the A7R III is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D5100) and a full frame (A7R III) sensor. The Nikon has a resolution of 16.1 megapixels, whereas the Sony provides 42.2 MP.

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

Headline Specifications
Nikon D5100
versus
Sony A7R III
Nikon D5100   Sony A7R III
Digital single lens reflex Mirrorless system camera
Nikon F mount lenses Sony E mount lenses
16.1 MP, APS-C Sensor 42.2 MP, Full Frame Sensor
1080/30p Video 4K/30p Video
ISO 100-6,400 (100 - 25,600) ISO 100-32,000 (50 - 102,400)
Optical viewfinder Electronic viewfinder (3686k dots)
3.0 LCD, 921k dots 3.0 LCD, 1440k dots
Swivel screen (not touch-sensitive) Tilting touchscreen
4 shutter flaps per second 10 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
660 shots per battery charge650 shots per battery charge
128 x 97 x 79 mm, 560 g 127 x 96 x 74 mm, 650 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D5100 and the Sony Alpha A7R III? 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.

Body comparison

The physical size and weight of the Nikon D5100 and the Sony A7R III are illustrated 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 Nikon D5100 vs Sony A7R III
Compare D5100 versus A7R III top
Comparison D5100 or A7R III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7R III is somewhat smaller (2 percent) than the Nikon D5100. However, the A7R III is markedly heavier (16 percent) than the D5100. It is noteworthy in this context that the A7R III is splash and dust-proof, while the D5100 does not feature any corresponding weather-sealing.

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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Nikon Lens Catalog (D5100) and the Sony FE Lens Catalog (A7R III). Mirrorless cameras, such as the A7R III, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

Concerning battery life, the D5100 gets 660 shots out of its EN-EL14 battery, while the A7R III can take 650 images on a single charge of its NP-FZ100 power pack. The power pack in the A7R III can be charged via the USB port, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

scroll hint
Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D5100 128 mm 97 mm 79 mm 560 g 660 n Apr 2011 749i
2.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199i
3.
 
Canon G1 X 117 mm 81 mm 65 mm 534 g 250 n Jan 2012 799i
4.
 
Canon 550D 129 mm 98 mm 62 mm 530 g 440 n Feb 2010 699i
5.
 
Nikon D5600 124 mm 97 mm 70 mm 465 g 970 n Nov 2016 699 i
6.
 
Nikon D5500 124 mm 97 mm 70 mm 470 g 820 n Jan 2015 899i
7.
 
Nikon D5300 125 mm 98 mm 76 mm 480 g 600 n Oct 2013 799i
8.
 
Nikon D3200 125 mm 96 mm 77 mm 505 g 540 n Apr 2012 599i
9.
 
Nikon D5200 129 mm 98 mm 78 mm 555 g 500 n Nov 2012 749i
10.
 
Nikon D7000 132 mm 105 mm 77 mm 780 g 1050 Y Sep 2010 1,499i
11.
 
Nikon D3100 124 mm 96 mm 75 mm 505 g 550 n Aug 2010 599i
12.
 
Nikon D5000 127 mm 104 mm 80 mm 590 g 510 n Apr 2009 749i
13.
 
Sony A7 III 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 i
14.
 
Sony A9 127 mm 96 mm 63 mm 673 g 650 Y Apr 2017 4,499i
15.
 
Sony A99 II 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199 i
16.
 
Sony A7R II 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199i
17.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will naturally be influenced heavily by the price. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The D5100 was launched at a markedly lower price (by 77 percent) than the A7R III, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better 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 Nikon D5100 features an APS-C sensor and the Sony A7R III a full frame sensor. The sensor area in the A7R III is 132 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.

Nikon D5100 and Sony A7R III sensor measures

With 42.2MP, the A7R III offers a higher resolution than the D5100 (16.1MP), but the A7R III has smaller individual pixels (pixel pitch of 4.52μm versus 4.80μm for the D5100). Yet, the A7R III is a much more recent model (by 6 years and 6 months) than the D5100, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the A7R III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A7R III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R III for good quality output (200 dots per inch) amounts to 39.8 x 26.5 inches or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inches or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inches or 67.3 x 44.9 cm. The corresponding values for the Nikon D5100 are 24.6 x 16.3 inches or 62.6 x 41.5 cm for good quality, 19.7 x 13.1 inches or 50.1 x 33.2 cm for very good quality, and 16.4 x 10.9 inches or 41.7 x 27.6 cm for excellent quality prints.

The A7R III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the D5100, the A7R III has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

The Nikon D5100 has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 100-25600. The corresponding ISO settings for the Sony Alpha A7R III are ISO 100 to ISO 32000, with the possibility to increase the ISO range to 50-102400.

D5100 versus A7R III MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 A7R III offers substantially better image quality than the D5100 (overall score 20 points higher). The advantage is based on 2.5 bits higher color depth, 1.1 EV in additional dynamic range, and 1.6 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.

scroll hint
Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Nikon D5100 APS-C 16.1 4928 32641080/30p23.513.6118380
2.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523100
3.
 
Canon G1 X 1.5-inch 14.2 4352 32641080/24p21.710.864460
4.
 
Canon 550D APS-C 17.9 5184 34561080/30p22.111.578466
5.
 
Nikon D5600 APS-C 24.0 6000 40001080/60p24.114.0130684
6.
 
Nikon D5500 APS-C 24.0 6000 40001080/60p24.114.0143884
7.
 
Nikon D5300 APS-C 24.0 6000 40001080/60p24.013.9133883
8.
 
Nikon D3200 APS-C 24.1 6016 40001080/30p24.113.2113181
9.
 
Nikon D5200 APS-C 24.0 6000 40001080/60i24.213.9128484
10.
 
Nikon D7000 APS-C 16.1 4928 32641080/24p23.513.9116780
11.
 
Nikon D3100 APS-C 14.2 4608 30721080/24p22.511.391967
12.
 
Nikon D5000 APS-C 12.2 4288 2848720/24p22.712.586872
13.
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.7373096
14.
 
Sony A9 Full Frame 24.0 6000 40004K/30p24.913.3351792
15.
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
16.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498
17.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385

Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A7R III provides a better video resolution than the D5100. It can shoot movie footage at 4K/30p, while the Nikon is limited to 1080/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A7R III has an electronic viewfinder (3686k dots), while the D5100 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 viewfinder in the A7R III offers a wider field of view (100%) than the one in the D5100 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A7R III has a higher magnification (0.78x vs 0.51x), 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 Nikon D5100 and Sony A7R III along with similar information for a selection of comparators.

scroll hint
Core Features
    Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Nikon D5100optical n3.0 / 921 swivel n 1/4000s 4.0 Y n
2.
 
Sony A7R III3686 n3.0 / 1440 tilting Y 1/8000s 10.0 n Y
3.
 
Canon G1 Xoptical n3.0 / 922 swivel n 1/4000s 1.9 Y Y
4.
 
Canon 550Doptical n3.0 / 1040 fixed n 1/4000s 3.7 Y n
5.
 
Nikon D5600optical n3.2 / 1037 swivel Y 1/4000s 5.0 Y n
6.
 
Nikon D5500optical n3.2 / 1037 swivel Y 1/4000s 5.0 Y n
7.
 
Nikon D5300optical n3.2 / 1037 swivel n 1/4000s 5.0 Y n
8.
 
Nikon D3200optical n3.0 / 921 fixed n 1/4000s 4.0 Y n
9.
 
Nikon D5200optical n3.0 / 921 swivel n 1/4000s 5.0 Y n
10.
 
Nikon D7000optical Y3.0 / 921 fixed n 1/8000s 6.0 Y n
11.
 
Nikon D3100optical n3.0 / 230 fixed n 1/4000s 3.0 Y n
12.
 
Nikon D5000optical n2.7 / 230 full-flex n 1/4000s 4.0 Y n
13.
 
Sony A7 III2359 n3.0 / 922 tilting Y 1/8000s 10.0 n Y
14.
 
Sony A93686 n3.0 / 1440 tilting Y 1/8000s 20.0 n Y
15.
 
Sony A99 II2400 Y3.0 / 1229 full-flex n 1/8000s 12.0 n Y
16.
 
Sony A7R II2400 n3.0 / 1229 tilting n 1/8000s 5.0 n Y
17.
 
Sony A7S II2400 n3.0 / 1229 tilting n 1/8000s 5.0 n Y

One difference between the cameras concerns the presence of an on-board flash. The D5100 has one, while the A7R III does not. While the built-in flash of the D5100 is not very powerful, it can at times be useful as a fill-in light.

The D5100 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 A7R III does not have a selfie-screen.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the A7R III is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

The Nikon D5100 and the Sony A7R III both have 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 D5100 writes its imaging data to SDXC cards, while the A7R III uses SDXC or Memory Stick PRO Duo cards. The A7R III features dual card slots, which can be very useful in case a memory card fails. In contrast, the D5100 only has one slot. The A7R III supports UHS-II cards (on its first slot), while the D5100 can use UHS-I cards.

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 Nikon D5100 and Sony Alpha A7R III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

scroll hint
Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Nikon D5100Ymono / monoY-mini2.0---
2.
 
Sony A7R IIIYstereo / monoYYmicro3.1YYY
3.
 
Canon G1 XYstereo / mono--mini2.0---
4.
 
Canon 550DYstereo / -Y-mini2.0---
5.
 
Nikon D5600Ystereo / monoY-mini2.0YYY
6.
 
Nikon D5500Ystereo / monoY-mini2.0Y--
7.
 
Nikon D5300Ystereo / monoY-mini2.0Y--
8.
 
Nikon D3200Ymono / monoY-mini2.0---
9.
 
Nikon D5200Ystereo / monoY-mini2.0---
10.
 
Nikon D7000Ymono / monoY-mini2.0---
11.
 
Nikon D3100Ymono / mono--mini2.0---
12.
 
Nikon D5000Ymono / mono--mini2.0---
13.
 
Sony A7 IIIYstereo / monoYYmicro3.1YYY
14.
 
Sony A9Ystereo / monoYYmicro2.0YYY
15.
 
Sony A99 IIYstereo / monoYYmicro2.0YYY
16.
 
Sony A7R IIYstereo / monoYYmicro2.0YY-
17.
 
Sony A7S IIYstereo / monoYYmicro2.0YY-

It is notable that the A7R III offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the D5100 does not provide wifi capability.

Studio photographers will appreciate that the Sony A7R III (unlike the D5100) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the D5100 and the A7R III have been discontinued, but can regularly be found used on eBay. The D5100 was replaced by the Nikon D5200, while the A7R III was followed by the Sony A7R IV. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon and Sony websites.

Review summary

So how do things add up? Which of the two cameras – the Nikon D5100 or the Sony A7R III – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

ilogo

Advantages of the Nikon D5100:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • More flexible LCD: Has a swivel 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.
  • Less heavy: Is lighter (by 90g or 14 percent) and hence easier to carry around.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (77 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in April 2011).

ilogo

Arguments in favor of the Sony Alpha A7R III:

  • More detail: Has more megapixels (42.2 vs 16.1MP), which boosts linear resolution by 62%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better image quality: Scores substantially higher (20 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (2.5 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (1.1 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (1.6 stops ISO advantage).
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.51x).
  • More detailed LCD: Has a higher resolution rear screen (1440k vs 921k dots).
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (10 vs 4 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • 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 6 years and 6 months of technical progress since the D5100 launch.

If the count of individual advantages (bullet points above) is taken as a guide, the A7R III is the clear winner of the contest (30 : 8 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

D5100 08:30 A7R III

How about other alternatives? Do the specifications of the Nikon D5100 and the Sony A7R III place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the D5100 or the A7R III 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 table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.

scroll hint
Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D51005/5+ +..76/1004.5/54.5/5 Apr 2011 749i
2.
 
Sony A7R III..+ +4/590/1004.5/55/5 Oct 2017 3,199i
3.
 
Canon G1 X5/5+..76/1004/54.5/5 Jan 2012 799i
4.
 
Canon 550D..+ +..77/1004/54.5/5 Feb 2010 699i
5.
 
Nikon D56004/5..4/579/1004.5/54/5 Nov 2016 699 i
6.
 
Nikon D55005/5+..79/1004.5/54.5/5 Jan 2015 899i
7.
 
Nikon D53004/5+ +..79/1004.5/54.5/5 Oct 2013 799i
8.
 
Nikon D32005/5+ +..73/1004.5/54.5/5 Apr 2012 599i
9.
 
Nikon D52004/5+ +..79/1004.5/54.5/5 Nov 2012 749i
10.
 
Nikon D70004/5....80/1004.5/54.5/5 Sep 2010 1,499i
11.
 
Nikon D31005/5+ +..72/1004.5/54.5/5 Aug 2010 599i
12.
 
Nikon D5000..+ +..75/1004/54.5/5 Apr 2009 749i
13.
 
Sony A7 III..+ +4.5/589/1005/55/5 Feb 2018 1,999 i
14.
 
Sony A95/5+ +4.8/589/1005/55/5 Apr 2017 4,499i
15.
 
Sony A99 II....4.5/585/1004.5/54.5/5 Sep 2016 3,199 i
16.
 
Sony A7R II5/5+ +5/590/1005/55/5 Jun 2015 3,199i
17.
 
Sony A7S II5/5+....4.5/55/5 Sep 2015 2,999i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. 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, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Nikon D5100:
Check Ebay offers
Sony A7R III:
Check Ebay offers

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 a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

~
    loader

    Specifications: Nikon D5100 vs Sony A7R III

    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 Nikon D5100 Sony A7R III
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Nikon F mount lenses Sony E mount lenses
    Launch Date April 2011 October 2017
    Launch Price USD 749 USD 3,199
    Sensor Specs Nikon D5100 Sony A7R III
    Sensor Technology CMOS BSI-CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 23.6 x 15.7 mm 35.9 x 24.0 mm
    Sensor Area 370.52 mm2 861.6 mm2
    Sensor Diagonal 28.3 mm 43.2 mm
    Crop Factor 1.5x 1.0x
    Sensor Resolution 16.1 Megapixels 42.2 Megapixels
    Image Resolution 4928 x 3264 pixels 7952 x 5304 pixels
    Pixel Pitch 4.80 μm 4.52 μm
    Pixel Density 4.34 MP/cm2 4.90 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 1080/30p Video 4K/30p Video
    ISO Setting 100 - 6,400 ISO 100 - 32,000 ISO
    ISO Boost 100 - 25,600 ISO 50 - 102,400 ISO
    Image Processor EXPEED 2 BIONZ X
    DXO Sensor Quality (score) 80 100
    DXO Color Depth (bits) 23.5 26.0
    DXO Dynamic Range (EV) 13.6 14.7
    DXO Low Light (ISO) 1183 3523
    Screen Specs Nikon D5100 Sony A7R III
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.51x 0.78x
    Viewfinder Resolution 3686k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 921k dots 1440k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Nikon D5100 Sony A7R III
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 4 shutter flaps/s 10 shutter flaps/s
    Shutter Life Expectancy100 000 actuations500 000 actuations
    Electronic Shutterno E-ShutterYES
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards MS or SDXC cards
    Second Storage Option Single card slot Dual card slots
    UHS card support UHS-I Single UHS-II
    Connectivity Specs Nikon D5100 Sony A7R III
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 3.1
    HDMI Port mini HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Nikon D5100 Sony A7R III
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type EN-EL14 NP-FZ100
    Battery Life (CIPA)660 shots per charge650 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 128 x 97 x 79 mm
    (5.0 x 3.8 x 3.1 in)
    127 x 96 x 74 mm
    (5.0 x 3.8 x 2.9 in)
    Camera Weight 560 g (19.8 oz) 650 g (22.9 oz)

    Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

    You are here Home  »  CAM-parator  »  Nikon D5100 vs Sony A7R III

    Thanks for your vote!

    You rated this page 4 out of 5.


    Rating

    Any additional comment or suggestion for improvement would be welcome.


    If you like it, make sure you share it:

    • Mention this page to your Facebook friends and Twitter followers.
    • Bookmark it in your browser for future reference.
    • Create a hyperlink by copying the text below into your web-project or discussion forum entry.

    Once again, thanks for taking the time to provide feedback. I appreciate it.