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Pentax K-3 III vs Sony A7C II

The Pentax K-3 III and the Sony Alpha A7C II are two enthusiast cameras that were announced, respectively, in March 2021 and August 2023. The K-3 III is a DSLR, while the A7C II is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (K-3 III) and a full frame (A7C II) sensor. The Pentax has a resolution of 25.6 megapixels, whereas the Sony provides 32.7 MP.

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

Headline Specifications
Pentax K-3 III
versus
Sony A7C II
Pentax K-3 III   Sony A7C II
Digital single lens reflex Mirrorless system camera
Pentax K mount lenses Sony E mount lenses
25.6 MP – APS-C sensor 32.7 MP – Full Frame sensor
4K/30p Video 4K/60p Video
ISO 100-160,000 ISO 100-51,200 (50 - 204,800)
Optical viewfinder Electronic viewfinder (2360k dots)
3.2" LCD – 1620k dots 3.0" LCD – 1037k dots
Fixed touchscreen Swivel touchscreen
12 shutter flaps per second 10 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodyWeathersealed body
800 shots per battery charge540 shots per battery charge
135 x 104 x 74 mm, 820 g 124 x 71 x 63 mm, 514 g
logo
Check K-3 III price at
amazon.com
logo
Check A7C II price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax K-3 III and the Sony Alpha A7C II? 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

The side-by-side display below illustrates the physical size and weight of the Pentax K-3 III and the Sony A7C II. 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 width, height and depth measures are rounded to the nearest millimeter.

Both cameras are available in two different colors (black, silver).

Size Pentax K-3 III vs Sony A7C II
Compare K-3 III versus A7C II top
Comparison K-3 III or A7C II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7C II is considerably smaller (37 percent) than the Pentax K-3 III. Moreover, the A7C II is substantially lighter (37 percent) than the K-3 III. 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 K-3 III gets 800 shots out of its Pentax D-LI90 battery, while the A7C II can take 540 images on a single charge of its Sony NP-FZ100 power pack. The power pack in the A7C II 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. 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
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Pentax K-3 III 135 mm 104 mm 74 mm 820 g 800 Y Mar 2021 US$ 1 999 amazon.com
2.
 
Sony A7C II 124 mm 71 mm 63 mm 514 g 540 Y Aug 2023 US$ 2 199 amazon.com
3.
 
Fujifilm X-H1 140 mm 97 mm 86 mm 673 g 310 Y Feb 2018 US$ 1 899ebay.com
4.
 
Fujifilm X-T4 135 mm 93 mm 64 mm 607 g 500 Y Feb 2020 US$ 1 699ebay.com
5.
 
Nikon Z6 II 134 mm 101 mm 70 mm 705 g 410 Y Oct 2020 US$ 1 999 amazon.com
6.
 
Panasonic S5 133 mm 98 mm 82 mm 714 g 440 Y Sep 2020 US$ 1 999 amazon.com
7.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 US$ 1 299ebay.com
8.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 US$ 1 099ebay.com
9.
 
Pentax K-5 II 131 mm 97 mm 73 mm 760 g 740 Y Sep 2012 US$ 1 099ebay.com
10.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 US$ 649ebay.com
11.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 US$ 1 099ebay.com
12.
 
Pentax K-S2 123 mm 91 mm 73 mm 678 g 410 Y Feb 2015 US$ 749ebay.com
13.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 US$ 1 999ebay.com
14.
 
Sony A7 IV 131 mm 96 mm 80 mm 659 g 580 Y Oct 2021 US$ 2 499 amazon.com
15.
 
Sony A7C 124 mm 71 mm 60 mm 509 g 740 Y Sep 2020 US$ 1 799 amazon.com
16.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 US$ 2 299ebay.com
17.
 
Sony ZV-E1 121 mm 72 mm 54 mm 483 g 570 Y Mar 2023 US$ 2 199 amazon.com
Note: 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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The K-3 III was somewhat cheaper (by 9 percent) than the A7C II at launch, but both cameras fall into the same price category. 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 size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Pentax K-3 III features an APS-C sensor and the Sony A7C II a full frame sensor. The sensor area in the A7C II is 138 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.

Pentax K-3 III and Sony A7C II sensor measures

With 32.7MP, the A7C II offers a higher resolution than the K-3 III (25.6MP), but the A7C II nevertheless has larger individual pixels (pixel pitch of 5.12μm versus 3.76μm for the K-3 III) due to its larger sensor. Moreover, the A7C II is a much more recent model (by 2 years and 4 months) than the K-3 III, 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 neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The resolution advantage of the Sony A7C II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7C II for good quality output (200 dots per inch) amounts to 35 x 23.4 inches or 89 x 59.3 cm, for very good quality (250 dpi) 28 x 18.7 inches or 71.2 x 47.5 cm, and for excellent quality (300 dpi) 23.4 x 15.6 inches or 59.3 x 39.6 cm. The corresponding values for the Pentax K-3 III are 31 x 20.6 inches or 78.6 x 52.4 cm for good quality, 24.8 x 16.5 inches or 62.9 x 41.9 cm for very good quality, and 20.6 x 13.8 inches or 52.4 x 35 cm for excellent quality prints.

The A7C II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the A7C II, the K-3 III has the capacity to capture high quality composite images (YESMP) 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 Pentax K-3 III has a native sensitivity range from ISO 100 to ISO 160000. The corresponding ISO settings for the Sony Alpha A7C II are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.

In terms of underlying technology, the K-3 III is build around a CMOS sensor, while the A7C II 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.

K-3 III versus A7C II MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. 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
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Pentax K-3 III APS-C 25.6 6192 41284K/30p24.213.7208385
2.
 
Sony A7C II Full Frame 32.7 7008 46724K/60p25.414.7323796
3.
 
Fujifilm X-H1 APS-C 24.0 6000 40004K/30p24.013.3180682
4.
 
Fujifilm X-T4 APS-C 26.0 6240 41604K/60p24.113.6199584
5.
 
Nikon Z6 II Full Frame 24.3 6048 40244K/60p25.014.4330394
6.
 
Panasonic S5 Full Frame 24.0 6000 40004K/60p25.114.5269794
7.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
8.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
9.
 
Pentax K-5 II APS-C 16.1 4928 32641080/25p23.814.1123582
10.
 
Pentax K-70 APS-C 24.0 6000 40001080/60i23.813.1163980
11.
 
Pentax KP APS-C 24.1 6016 40001080/60i23.913.2169981
12.
 
Pentax K-S2 APS-C 20.0 5472 36481080/30p23.612.9151479
13.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
14.
 
Sony A7 IV Full Frame 32.7 7008 46724K/60p25.414.7337997
15.
 
Sony A7C Full Frame 24.0 6000 40004K/30p25.014.7340795
16.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
17.
 
Sony ZV-E1 Full Frame 12.0 4240 28324K/60p25.414.6318196
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the A7C II provides a faster frame rate than the K-3 III. It can shoot movie footage at 4K/60p, while the Pentax is limited to 4K/30p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A7C II has an electronic viewfinder (2360k dots), while the K-3 III 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%), as well as the same magnification (0.70x). The following table reports on some other key feature differences and similarities of the Pentax K-3 III, the Sony A7C II, and comparable cameras.

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Core Features
  empty 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.
 
Pentax K-3 IIIoptical Y3.2 / 1620 fixed Y 1/8000s 12.0/s n Y
2.
 
Sony A7C II2360 n3.0 / 1037 swivel Y 1/4000s 10.0/s n Y
3.
 
Fujifilm X-H13690 Y3.0 / 1040 full-flex Y 1/8000s 14.0/s n Y
4.
 
Fujifilm X-T43690 n3.0 / 1620 swivel Y 1/8000s 15.0/s n Y
5.
 
Nikon Z6 II3690 Y3.2 / 2100 tilting Y 1/8000s 14.0/s n Y
6.
 
Panasonic S52360 n3.0 / 1840 swivel Y 1/8000s 7.0/s n Y
7.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3/s Y Y
8.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3/s n Y
9.
 
Pentax K-5 IIoptical Y3.0 / 921 fixed n 1/8000s 7.0/s Y Y
10.
 
Pentax K-70optical n3.0 / 921 swivel n 1/6000s 6.0/s Y Y
11.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0/s Y Y
12.
 
Pentax K-S2optical n3.0 / 921 swivel n 1/6000s 5.4/s Y Y
13.
 
Sony A7 II2400 n3.0 / 1230 tilting n 1/8000s 5.0/s n Y
14.
 
Sony A7 IV3686 n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
15.
 
Sony A7C2360 n3.0 / 922 swivel Y 1/4000s 10.0/s n Y
16.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0/s n n
17.
 
Sony ZV-E1none n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the K-3 III, but is missing on the A7C II is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The A7C II has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the K-3 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 A7C II 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 Pentax K-3 III and the Sony A7C II 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 K-3 III writes its imaging data to SDXC cards, while the A7C II uses SDXC or Memory Stick PRO Duo cards. The K-3 III features dual card slots, which can be very useful in case a memory card fails. In contrast, the A7C II only has one slot. Both cameras support UHS-II cards, which provide for Ultra High Speed data transfer of up to 312 MB/s (the second slot of the K-3 III supports only UHS-I, though).

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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 Pentax K-3 III and Sony Alpha A7C II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Pentax K-3 IIIYstereo / monoYYmicro3.2Y-Y
2.
 
Sony A7C IIYstereo / monoYYmicro3.2Y-Y
3.
 
Fujifilm X-H1Ystereo / monoY-micro3.0Y--
4.
 
Fujifilm X-T4Ystereo / monoY-micro3.1Y-Y
5.
 
Nikon Z6 IIYstereo / monoYYmicro3.2Y-Y
6.
 
Panasonic S5Ystereo / monoYYmicro3.2Y-Y
7.
 
Pentax K-3Ymono / monoYYmini3.0---
8.
 
Pentax K-3 IIYmono / monoYYmini3.0---
9.
 
Pentax K-5 IIYstereo / monoY-mini2.0---
10.
 
Pentax K-70Ystereo / monoY-mini2.0Y--
11.
 
Pentax KPYstereo / monoY--2.0Y--
12.
 
Pentax K-S2Ymono / monoY-micro2.0YY-
13.
 
Sony A7 IIYstereo / monoYYmicro2.0YY-
14.
 
Sony A7 IVYstereo / monoYYfull3.2Y-Y
15.
 
Sony A7CYstereo / monoYYmicro3.2YYY
16.
 
Sony A7RYstereo / monoYYmicro2.0YY-
17.
 
Sony ZV-E1Ystereo / monoYYmicro3.2Y-Y

Studio photographers will appreciate that the Pentax K-3 III (unlike the A7C II) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the K-3 III has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the K-3 III and the A7C II are recent models that are part of the current product line-up. The K-3 III replaced the earlier Pentax K-3 II, while the A7C II followed on from the Sony A7C. Further information on the features and operation of the K-3 III and A7C II can be found, respectively, in the Pentax K-3 III Manual (free pdf) or the online Sony A7C II Manual.

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Review summary

So how do things add up? Is the Pentax K-3 III better than the Sony A7C II or vice versa? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Pentax K-3 III:

  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • 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 (1620k vs 1037k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (12 vs 10 flaps/sec) to capture the decisive moment.
  • Longer lasting: Can take more shots (800 versus 540) on a single battery charge.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • 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.
  • More heavily discounted: Has been available for much longer (launched in March 2021).

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Arguments in favor of the Sony Alpha A7C II:

  • More detail: Has more megapixels (32.7 vs 25.6MP), which boosts linear resolution by 13%.
  • Better image quality: Is equipped with a larger and more technologically advanced sensor.
  • Richer colors: The sensor size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
  • Better video: Provides higher movie framerates (4K/60p versus 4K/30p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • 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 disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (124x71mm vs 135x104mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 306g or 37 percent) and is thus easier to take along.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • More modern: Reflects 2 years and 4 months of technical progress since the K-3 III launch.

If the count of relative strengths (bullet points above) is taken as a measure, the A7C II is the clear winner of the contest (16 : 12 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

K-3 III 12:16 A7C II

How about other alternatives? Do the specifications of the Pentax K-3 III and the Sony A7C II 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the K-3 III or the A7C II. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

Expert reviews

This is why hands-on reviews by experts are important. The following table reports the overall ratings of the cameras as published by some of the major 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
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Pentax K-3 III4/5..3/5..4.5/5.. Mar 2021 US$ 1 999 amazon.com
2.
 
Sony A7C II4/5..4/587/1004.5/54.5/5 Aug 2023 US$ 2 199 amazon.com
3.
 
Fujifilm X-H1..+5/586/1004.5/54.5/5 Feb 2018 US$ 1 899ebay.com
4.
 
Fujifilm X-T45/5+ +5/588/1005/55/5 Feb 2020 US$ 1 699ebay.com
5.
 
Nikon Z6 II4.5/5..4/589/1004.5/54.5/5 Oct 2020 US$ 1 999 amazon.com
6.
 
Panasonic S54.5/5+ +4.5/588/1004.5/54.5/5 Sep 2020 US$ 1 999 amazon.com
7.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 US$ 1 299ebay.com
8.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 US$ 1 099ebay.com
9.
 
Pentax K-5 II5/5....80/1005/54.5/5 Sep 2012 US$ 1 099ebay.com
10.
 
Pentax K-704.5/5..4/579/1004.5/54.5/5 Jun 2016 US$ 649ebay.com
11.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 US$ 1 099ebay.com
12.
 
Pentax K-S24.5/5......5/54.5/5 Feb 2015 US$ 749ebay.com
13.
 
Sony A7 II5/5+4/582/1004.5/55/5 Nov 2014 US$ 1 999ebay.com
14.
 
Sony A7 IV5/5+ +4.5/589/1004.5/54.5/5 Oct 2021 US$ 2 499 amazon.com
15.
 
Sony A7C3.5/5..3.5/586/1004/54/5 Sep 2020 US$ 1 799 amazon.com
16.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 US$ 2 299ebay.com
17.
 
Sony ZV-E1..+4/5....4.5/5 Mar 2023 US$ 2 199 amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

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Check K-3 III price at
amazon.com
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Check A7C II price at
amazon.com

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Pentax K-3 III vs Sony A7C II

    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 Pentax K-3 III Sony A7C II
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Pentax K mount lenses Sony E mount lenses
    Launch Date March 2021 August 2023
    Launch Price USD 1,999 USD 2,199
    Sensor Specs Pentax K-3 III Sony A7C II
    Sensor Technology CMOS BSI-CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 23.3 x 15.5 mm 35.9 x 23.9 mm
    Sensor Area 361.15 mm2 858.01 mm2
    Sensor Diagonal 28 mm 43.1 mm
    Crop Factor 1.5x 1.0x
    Sensor Resolution 25.6 Megapixels 32.7 Megapixels
    Image Resolution 6192 x 4128 pixels 7008 x 4672 pixels
    Pixel Pitch 3.76 μm 5.12 μm
    Pixel Density 7.08 MP/cm2 3.82 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/30p Video 4K/60p Video
    ISO Setting 100 - 160,000 ISO 100 - 51,200 ISO
    ISO Boost no Enhancement 50 - 204,800 ISO
    Image Processor PRIME V BIONZ XR
    Screen Specs Pentax K-3 III Sony A7C II
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.70x 0.7x
    Viewfinder Resolution 2360k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.0inch
    LCD Resolution 1620k dots 1037k dots
    LCD Attachment Fixed screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Pentax K-3 III Sony A7C II
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/4000s
    Continuous Shooting 12 shutter flaps/s 10 shutter flaps/s
    Shutter Life Expectancy200 000 actuations200 000 actuations
    Electronic Shutterno E-Shutterup to 1/8000s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards MS or SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    UHS card support Single UHS-II UHS-II
    Connectivity Specs Pentax K-3 III Sony A7C II
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.2 USB 3.2
    HDMI Port micro HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Bluetooth Support Bluetooth built-in Bluetooth built-in
    Geotagging GPS built-in no internal GPS
    Body Specs Pentax K-3 III Sony A7C II
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Pentax D-LI90 Sony NP-FZ100
    Battery Life (CIPA)800 shots per charge540 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 135 x 104 x 74 mm
    (5.3 x 4.1 x 2.9 in)
    124 x 71 x 63 mm
    (4.9 x 2.8 x 2.5 in)
    Camera Weight 820 g (28.9 oz) 514 g (18.1 oz)
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