Pentax 645Z vs Sony A7C II
The Pentax 645Z and the Sony Alpha A7C II are two digital cameras that were announced, respectively, in April 2014 and August 2023. The 645Z is a DSLR, while the A7C II is a mirrorless interchangeable lens camera. The cameras are based on a medium format (645Z) and a full frame (A7C II) sensor. The Pentax has a resolution of 51.1 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.

Check 645Z offers at
ebay.com

Check A7C II price at
amazon.com
Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax 645Z 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.
Body comparison
The physical size and weight of the Pentax 645Z and the Sony A7C II are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter.
The A7C II can be obtained in two different colors (black, silver), while the 645Z is only available in black.



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 (52 percent) than the Pentax 645Z. Moreover, the A7C II is substantially lighter (67 percent) than the 645Z. 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 645Z gets 650 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.

| Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Pentax 645Z | 156 mm | 117 mm | 123 mm | 1550 g | 650 | Y | Apr 2014 | EUR 6 999 | ebay.com | |
| 2. | Sony A7C II | 124 mm | 71 mm | 63 mm | 514 g | 540 | Y | Aug 2023 | EUR 2 399 | amazon.com | |
| 3. | Canon 1D X Mark II | 158 mm | 168 mm | 83 mm | 1530 g | 1210 | Y | Feb 2016 | EUR 6 299 | ebay.com | |
| 4. | Canon 5DS | 152 mm | 116 mm | 76 mm | 930 g | 700 | Y | Feb 2015 | EUR 3 499 | ebay.com | |
| 5. | Canon 5DS R | 152 mm | 116 mm | 76 mm | 930 g | 700 | Y | Feb 2015 | EUR 3 699 | ebay.com | |
| 6. | Hasselblad X1D | 150 mm | 98 mm | 71 mm | 725 g | .. | Y | Jun 2016 | EUR 9 399 | ebay.com | |
| 7. | Leica M11 | 139 mm | 80 mm | 39 mm | 640 g | 700 | Y | Jan 2022 | EUR 8 349 | amazon.com | |
| 8. | Leica SL | 147 mm | 104 mm | 39 mm | 847 g | 400 | Y | Oct 2015 | EUR 6 899 | ebay.com | |
| 9. | Nikon D4S | 160 mm | 157 mm | 91 mm | 1350 g | 3020 | Y | Feb 2014 | EUR 6 149 | ebay.com | |
| 10. | Nikon D5 | 160 mm | 159 mm | 92 mm | 1415 g | 3780 | Y | Jan 2016 | EUR 6 989 | ebay.com | |
| 11. | Nikon D7200 | 136 mm | 107 mm | 76 mm | 765 g | 1110 | Y | Mar 2015 | EUR 1 179 | ebay.com | |
| 12. | Pentax 645D | 156 mm | 117 mm | 119 mm | 1480 g | 800 | Y | Mar 2010 | EUR 9 995 | ebay.com | |
| 13. | Sony A7 II | 127 mm | 96 mm | 60 mm | 599 g | 350 | Y | Nov 2014 | EUR 2 099 | ebay.com | |
| 14. | Sony A7 IV | 131 mm | 96 mm | 80 mm | 659 g | 580 | Y | Oct 2021 | EUR 2 799 | amazon.com | |
| 15. | Sony A7C | 124 mm | 71 mm | 60 mm | 509 g | 740 | Y | Sep 2020 | EUR 2 099 | amazon.com | |
| 16. | Sony A7R | 127 mm | 94 mm | 48 mm | 465 g | 340 | Y | Oct 2013 | EUR 2 099 | ebay.com | |
| 17. | Sony ZV-E1 | 121 mm | 72 mm | 54 mm | 483 g | 570 | Y | Mar 2023 | EUR 2 699 | amazon.com | |
| Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders. | |||||||||||
The price is, of course, an important factor in any camera decision. 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 A7C II was launched at a markedly lower price (by 74 percent) than the 645Z, 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 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 645Z features a medium format sensor and the Sony A7C II a full frame sensor. The sensor area in the A7C II is 40 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 0.79 and 1.0. The sensor in the 645Z has a native 4:3 aspect ratio, while the one in the A7C II offers a 3:2 aspect.

With 51.1MP, the 645Z offers a higher resolution than the A7C II (32.7MP), but the 645Z nevertheless has larger individual pixels (pixel pitch of 5.30μm versus 5.12μm for the A7C II) due to its larger sensor. However, the A7C II is a much more recent model (by 9 years and 4 months) than the 645Z, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. 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 Pentax 645Z implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 645Z for good quality output (200 dots per inch) amounts to 41.3 x 31 inches or 104.9 x 78.6 cm, for very good quality (250 dpi) 33 x 24.8 inches or 83.9 x 62.9 cm, and for excellent quality (300 dpi) 27.5 x 20.6 inches or 69.9 x 52.4 cm. The corresponding values for the Sony A7C II are 35 x 23.4 inches or 89 x 59.3 cm for good quality, 28 x 18.7 inches or 71.2 x 47.5 cm for very good quality, and 23.4 x 15.6 inches or 59.3 x 39.6 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.
The Pentax 645Z has a native sensitivity range from ISO 100 to ISO 204800. 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 645Z 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.

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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.

| Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Pentax 645Z | Medium Format | 51.1 | 8256 | 6192 | 1080/60i | 26.0 | 14.7 | 4505 | 101 | |
| 2. | Sony A7C II | Full Frame | 32.7 | 7008 | 4672 | 4K/60p | 25.4 | 14.7 | 3237 | 96 | |
| 3. | Canon 1D X Mark II | Full Frame | 20.0 | 5472 | 3648 | 4K/60p | 24.1 | 13.5 | 3207 | 88 | |
| 4. | Canon 5DS | Full Frame | 50.3 | 8688 | 5792 | 1080/30p | 24.7 | 12.4 | 2381 | 87 | |
| 5. | Canon 5DS R | Full Frame | 50.3 | 8688 | 5792 | 1080/30p | 24.6 | 12.4 | 2308 | 86 | |
| 6. | Hasselblad X1D | Medium Format | 51.3 | 8272 | 6200 | 1080/25p | 26.2 | 14.8 | 4489 | 102 | |
| 7. | Leica M11 | Full Frame | 60.3 | 9528 | 6328 | none | 26.3 | 14.8 | 3376 | 100 | |
| 8. | Leica SL | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 13.4 | 1821 | 88 | |
| 9. | Nikon D4S | Full Frame | 16.2 | 4928 | 3280 | 1080/60p | 24.4 | 13.3 | 3074 | 89 | |
| 10. | Nikon D5 | Full Frame | 20.7 | 5588 | 3712 | 4K/30p | 25.1 | 12.3 | 2343 | 88 | |
| 11. | Nikon D7200 | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 24.5 | 14.6 | 1333 | 87 | |
| 12. | Pentax 645D | Medium Format | 39.5 | 7264 | 5440 | none | 24.6 | 12.6 | 1262 | 82 | |
| 13. | Sony A7 II | Full Frame | 24.0 | 6000 | 4000 | 1080/60p | 24.9 | 13.6 | 2449 | 90 | |
| 14. | Sony A7 IV | Full Frame | 32.7 | 7008 | 4672 | 4K/60p | 25.4 | 14.7 | 3379 | 97 | |
| 15. | Sony A7C | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3407 | 95 | |
| 16. | Sony A7R | Full Frame | 36.2 | 7360 | 4912 | 1080/60p | 25.6 | 14.1 | 2746 | 95 | |
| 17. | Sony ZV-E1 | Full Frame | 12.0 | 4240 | 2832 | 4K/60p | 25.4 | 14.6 | 3181 | 96 | |
| 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. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A7C II provides a better video resolution than the 645Z. It can shoot movie footage at 4K/60p, while the Pentax is limited to 1080/60i.
Feature comparison
Beyond body and sensor, cameras can and do differ across a range of features. For example, the A7C II has an electronic viewfinder (2360k dots), while the 645Z 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 A7C II offers a wider field of view (100%) than the one in the 645Z (98%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the 645Z has a higher magnification (0.78x vs 0.7x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Pentax 645Z and Sony A7C II in connection with corresponding information for a sample of similar cameras.

| 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 645Z | optical | Y | 3.2 / 1037 | tilting | n | 1/4000s | 3.0/s | n | n | |
| 2. | Sony A7C II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/4000s | 10.0/s | n | Y | |
| 3. | Canon 1D X Mark II | optical | Y | 3.2 / 1620 | fixed | Y | 1/8000s | 16.0/s | n | n | |
| 4. | Canon 5DS | optical | Y | 3.2 / 1040 | fixed | n | 1/8000s | 5.0/s | n | n | |
| 5. | Canon 5DS R | optical | Y | 3.2 / 1040 | fixed | n | 1/8000s | 5.0/s | n | n | |
| 6. | Hasselblad X1D | 2360 | n | 3.0 / 920 | fixed | Y | 1/2000s | 2.3/s | n | n | |
| 7. | Leica M11 | optical | n | 3.0 / 2333 | fixed | Y | 1/4000s | 4.5/s | n | n | |
| 8. | Leica SL | 4400 | Y | 3.0 / 1040 | fixed | Y | 1/8000s | 11.0/s | n | n | |
| 9. | Nikon D4S | optical | Y | 3.2 / 921 | fixed | n | 1/8000s | 11.0/s | n | n | |
| 10. | Nikon D5 | optical | Y | 3.2 / 2359 | fixed | Y | 1/8000s | 14.0/s | n | n | |
| 11. | Nikon D7200 | optical | Y | 3.2 / 1229 | fixed | n | 1/8000s | 6.0/s | Y | n | |
| 12. | Pentax 645D | optical | Y | 3.0 / 921 | fixed | n | 1/4000s | 1.1/s | n | n | |
| 13. | Sony A7 II | 2400 | n | 3.0 / 1230 | tilting | n | 1/8000s | 5.0/s | n | Y | |
| 14. | Sony A7 IV | 3686 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 15. | Sony A7C | 2360 | n | 3.0 / 922 | swivel | Y | 1/4000s | 10.0/s | n | Y | |
| 16. | Sony A7R | 2400 | n | 3.0 / 1230 | tilting | n | 1/8000s | 4.0/s | n | n | |
| 17. | Sony ZV-E1 | none | n | 3.0 / 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 645Z, 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 645Z 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 645Z 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 645Z writes its imaging data to SDXC cards, while the A7C II uses SDXC or Memory Stick PRO Duo cards. The 645Z features dual card slots, which can be very useful in case a memory card fails. In contrast, the A7C II only has one slot. The A7C II supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the 645Z can use UHS-I cards (up to 104 MB/s).
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 645Z and Sony Alpha A7C II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

| Camera Model |
Hotshoe Port |
Internal Mic / Speaker |
Microphone Port |
Headphone Port |
HDMI Port |
USB Port |
WiFi Support |
NFC Support |
Bluetooth Support |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Pentax 645Z | Y | stereo / mono | Y | - | mini | 3.0 | - | - | - | |
| 2. | Sony A7C II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 3. | Canon 1D X Mark II | Y | mono / mono | Y | Y | mini | 3.0 | - | - | - | |
| 4. | Canon 5DS | Y | mono / mono | Y | - | mini | 3.0 | - | - | - | |
| 5. | Canon 5DS R | Y | mono / mono | Y | - | mini | 3.0 | - | - | - | |
| 6. | Hasselblad X1D | Y | stereo / mono | Y | Y | mini | 3.0 | Y | - | - | |
| 7. | Leica M11 | Y | - / - | - | - | - | 3.2 | Y | - | Y | |
| 8. | Leica SL | Y | stereo / mono | Y | Y | full | 3.0 | Y | - | - | |
| 9. | Nikon D4S | Y | mono / mono | Y | Y | mini | 2.0 | - | - | - | |
| 10. | Nikon D5 | Y | stereo / mono | Y | Y | mini | 3.0 | - | - | - | |
| 11. | Nikon D7200 | Y | stereo / mono | Y | Y | mini | 2.0 | Y | Y | - | |
| 12. | Pentax 645D | Y | stereo / - | - | - | - | 2.0 | - | - | - | |
| 13. | Sony A7 II | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 14. | Sony A7 IV | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 15. | Sony A7C | Y | stereo / mono | Y | Y | micro | 3.2 | Y | Y | Y | |
| 16. | Sony A7R | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 17. | Sony ZV-E1 | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y |
It is notable that the A7C II offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 645Z does not provide wifi capability.
Studio photographers will appreciate that the Pentax 645Z (unlike the A7C II) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The A7C II is a recent model that features in the current product line-up of Sony. In contrast, the 645Z has been discontinued (but can be found pre-owned on ebay). There has not been a direct replacement model for the 645Z from Pentax. Further information on the features and operation of the 645Z and A7C II can be found, respectively, in the Pentax 645Z Manual (free pdf) or the online Sony A7C II Manual.
Review summary
So what conclusions can be drawn? Is the Pentax 645Z better than the Sony A7C II or vice versa? The listing below highlights the relative strengths of the two models.

Reasons to prefer the Pentax 645Z:
- More detail: Offers more megapixels (51.1 vs 32.7MP) with a 23% higher linear resolution.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.7x).
- 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.
- Longer lasting: Can take more shots (650 versus 540) on a single battery charge.
- 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 April 2014).

Advantages of the Sony Alpha A7C II:
- Better video: Provides higher definition movie capture (4K/60p vs 1080/60i).
- 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 98%).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (10 vs 3 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- More compact: Is smaller (124x71mm vs 156x117mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 1036g or 67 percent) and is thus easier to take along.
- Easier travel charging: Can be conveniently charged via its USB port.
- 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.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
- More affordable: Was introduced into a lower priced category (74 percent cheaper at launch).
- More modern: Reflects 9 years and 4 months of technical progress since the 645Z launch.
If the count of individual advantages (bullet points above) is taken as a guide, the A7C II is the clear winner of the contest (20 : 9 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.
How about other alternatives? Do the specifications of the Pentax 645Z 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 comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 645Z 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.

| Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Pentax 645Z | 5/5 | .. | 3.5/5 | .. | 4.5/5 | 5/5 | Apr 2014 | EUR 6 999 | ebay.com | |
| 2. | Sony A7C II | 4/5 | .. | 4/5 | 87/100 | 4.5/5 | 4.5/5 | Aug 2023 | EUR 2 399 | amazon.com | |
| 3. | Canon 1D X Mark II | .. | .. | 4.5/5 | 89/100 | 4.5/5 | 4.5/5 | Feb 2016 | EUR 6 299 | ebay.com | |
| 4. | Canon 5DS | .. | + | .. | 83/100 | 4.5/5 | 4.5/5 | Feb 2015 | EUR 3 499 | ebay.com | |
| 5. | Canon 5DS R | 5/5 | + | .. | 83/100 | 5/5 | 4.5/5 | Feb 2015 | EUR 3 699 | ebay.com | |
| 6. | Hasselblad X1D | .. | o | .. | 81/100 | .. | 4/5 | Jun 2016 | EUR 9 399 | ebay.com | |
| 7. | Leica M11 | 4.5/5 | .. | 4.5/5 | .. | 4.5/5 | 4.5/5 | Jan 2022 | EUR 8 349 | amazon.com | |
| 8. | Leica SL | 4/5 | .. | 4/5 | 84/100 | 4.5/5 | 4/5 | Oct 2015 | EUR 6 899 | ebay.com | |
| 9. | Nikon D4S | 5/5 | .. | .. | .. | 4.5/5 | 4.5/5 | Feb 2014 | EUR 6 149 | ebay.com | |
| 10. | Nikon D5 | .. | .. | 4/5 | 89/100 | 4.5/5 | 5/5 | Jan 2016 | EUR 6 989 | ebay.com | |
| 11. | Nikon D7200 | 4/5 | + + | .. | 84/100 | 4.5/5 | 4.5/5 | Mar 2015 | EUR 1 179 | ebay.com | |
| 12. | Pentax 645D | 5/5 | .. | .. | .. | .. | .. | Mar 2010 | EUR 9 995 | ebay.com | |
| 13. | Sony A7 II | 5/5 | + | 4/5 | 82/100 | 4.5/5 | 5/5 | Nov 2014 | EUR 2 099 | ebay.com | |
| 14. | Sony A7 IV | 5/5 | + + | 4.5/5 | 89/100 | 4.5/5 | 4.5/5 | Oct 2021 | EUR 2 799 | amazon.com | |
| 15. | Sony A7C | 3.5/5 | .. | 3.5/5 | 86/100 | 4/5 | 4/5 | Sep 2020 | EUR 2 099 | amazon.com | |
| 16. | Sony A7R | 5/5 | + + | .. | 82/100 | 4.5/5 | 5/5 | Oct 2013 | EUR 2 099 | ebay.com | |
| 17. | Sony ZV-E1 | .. | + | 4/5 | .. | .. | 4.5/5 | Mar 2023 | EUR 2 699 | amazon.com | |
| Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. | |||||||||||
Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Check 645Z offers at
ebay.com

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 make a corresponding selection in the search boxes below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
- Canon G16 vs Sony A7C II
- Canon M3 vs Pentax 645Z
- Fujifilm GFX 100S II vs Sony A7C II
- Fujifilm X-E1 vs Pentax 645Z
- Fujifilm X-E1 vs Sony A7C II
- Fujifilm X100T vs Pentax 645Z
- Leica S-E Typ 006 vs Pentax 645Z
- Leica S3 vs Pentax 645Z
- Nikon Z8 vs Sony A7C II
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Specifications: Pentax 645Z 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 Model | Pentax 645Z | Sony A7C II |
|---|---|---|
| Camera Type | Digital single lens reflex | Mirrorless system camera |
| Camera Lens | Pentax 645 mount lenses | Sony E mount lenses |
| Launch Date | April 2014 | August 2023 |
| Launch Price | USD 8,499 | USD 2,199 |
| Sensor Specs | Pentax 645Z | Sony A7C II |
| Sensor Technology | CMOS | BSI-CMOS |
| Sensor Format | Medium Format Sensor | Full Frame Sensor |
| Sensor Size | 43.8 x 32.8 mm | 35.9 x 23.9 mm |
| Sensor Area | 1436.64 mm2 | 858.01 mm2 |
| Sensor Diagonal | 54.7 mm | 43.1 mm |
| Crop Factor | 0.79x | 1.0x |
| Sensor Resolution | 51.1 Megapixels | 32.7 Megapixels |
| Image Resolution | 8256 x 6192 pixels | 7008 x 4672 pixels |
| Pixel Pitch | 5.30 μm | 5.12 μm |
| Pixel Density | 3.56 MP/cm2 | 3.82 MP/cm2 |
| Moiré control | no AA filter | no AA filter |
| Movie Capability | 1080/60i Video | 4K/60p Video |
| ISO Setting | 100 - 204,800 ISO | 100 - 51,200 ISO |
| ISO Boost | no Enhancement | 50 - 204,800 ISO |
| Image Processor | PRIME III | BIONZ XR |
| DXO Sensor Quality (score) | 101 | .. |
| DXO Color Depth (bits) | 26.0 | .. |
| DXO Dynamic Range (EV) | 14.7 | .. |
| DXO Low Light (ISO) | 4505 | .. |
| Screen Specs | Pentax 645Z | Sony A7C II |
| Viewfinder Type | Optical viewfinder | Electronic viewfinder |
| Viewfinder Field of View | 98% | 100% |
| Viewfinder Magnification | 0.78x | 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 | 1037k dots | 1037k dots |
| LCD Attachment | Tilting screen | Swivel screen |
| Touch Input | no Touchscreen | Touchscreen |
| Shooting Specs | Pentax 645Z | Sony A7C II |
| Focus System | Phase-detect AF | On-Sensor Phase-detect |
| Manual Focusing Aid | Focus Peaking | Focus Peaking |
| Max Shutter Speed (mechanical) | 1/4000s | 1/4000s |
| Continuous Shooting | 3 shutter flaps/s | 10 shutter flaps/s |
| Shutter Life Expectancy | 100 000 actuations | 200 000 actuations |
| Electronic Shutter | no E-Shutter | up to 1/8000s |
| Time-Lapse Photography | Intervalometer built-in | Intervalometer built-in |
| Image Stabilization | Lens stabilization only | In-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 | UHS-I | UHS-II |
| Connectivity Specs | Pentax 645Z | Sony A7C II |
| External Flash | Hotshoe | Hotshoe |
| Studio Flash | PC Sync socket | no PC Sync |
| USB Connector | USB 3.0 | USB 3.2 |
| 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 |
| Bluetooth Support | no Bluetooth | Bluetooth built-in |
| Body Specs | Pentax 645Z | Sony A7C II |
| Environmental Sealing | Weathersealed body | Weathersealed body |
| Battery Type | Pentax D-LI90 | Sony NP-FZ100 |
| Battery Life (CIPA) | 650 shots per charge | 540 shots per charge |
| In-Camera Charging | no USB charging | USB charging |
| Body Dimensions |
156 x 117 x 123 mm (6.1 x 4.6 x 4.8 in) |
124 x 71 x 63 mm (4.9 x 2.8 x 2.5 in) |
| Camera Weight | 1550 g (54.7 oz) | 514 g (18.1 oz) |

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