Pentax K-5 II vs Sony A7S
The Pentax K-5 II and the Sony Alpha A7S are two digital cameras that were revealed to the public, respectively, in September 2012 and April 2014. The K-5 II is a DSLR, while the A7S is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (K-5 II) and a full frame (A7S) sensor. The Pentax has a resolution of 16.1 megapixels, whereas the Sony provides 12 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Check K-5 II offers at
ebay.com

Check A7S offers at
ebay.com
Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax K-5 II and the Sony Alpha A7S? 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 side-by-side display below illustrates the physical size and weight of the Pentax K-5 II and the Sony A7S. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth measures are rounded to the nearest millimeter.



If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7S is notably smaller (6 percent) than the Pentax K-5 II. Moreover, the A7S is substantially lighter (36 percent) than the K-5 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 K-5 II gets 740 shots out of its Pentax D-LI90 battery, while the A7S can take 380 images on a single charge of its Sony NP-FW50 power pack. The power pack in the A7S can be charged via the USB port, which can be very convenient when travelling.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

| Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Pentax K-5 II | 131 mm | 97 mm | 73 mm | 760 g | 740 | Y | Sep 2012 | US$ 1 099 | ebay.com | |
| 2. | Sony A7S | 127 mm | 94 mm | 48 mm | 489 g | 380 | Y | Apr 2014 | US$ 2 499 | ebay.com | |
| 3. | Nikon D7100 | 136 mm | 107 mm | 76 mm | 765 g | 950 | Y | Feb 2013 | US$ 1 199 | ebay.com | |
| 4. | Nikon Df | 144 mm | 110 mm | 67 mm | 760 g | 1400 | Y | Nov 2013 | US$ 2 749 | ebay.com | |
| 5. | Olympus E-M5 | 122 mm | 89 mm | 43 mm | 425 g | 360 | Y | Feb 2012 | US$ 1 299 | ebay.com | |
| 6. | Pentax K-3 | 131 mm | 100 mm | 77 mm | 800 g | 560 | Y | Oct 2013 | US$ 1 299 | ebay.com | |
| 7. | Pentax K-3 II | 131 mm | 100 mm | 77 mm | 800 g | 720 | Y | Apr 2015 | US$ 1 099 | ebay.com | |
| 8. | Pentax K-5 | 131 mm | 97 mm | 73 mm | 760 g | 740 | Y | Sep 2010 | US$ 1 099 | ebay.com | |
| 9. | Pentax K-30 | 130 mm | 97 mm | 71 mm | 650 g | 410 | Y | May 2012 | US$ 849 | ebay.com | |
| 10. | Pentax K-50 | 130 mm | 97 mm | 71 mm | 650 g | 410 | Y | Jun 2013 | US$ 599 | ebay.com | |
| 11. | Pentax K-70 | 126 mm | 93 mm | 74 mm | 688 g | 410 | Y | Jun 2016 | US$ 649 | ebay.com | |
| 12. | Pentax K-500 | 130 mm | 97 mm | 71 mm | 646 g | 710 | n | Jun 2013 | US$ 549 | ebay.com | |
| 13. | Pentax KP | 132 mm | 101 mm | 76 mm | 703 g | 390 | Y | Jan 2017 | US$ 1 099 | ebay.com | |
| 14. | Sony A7 | 127 mm | 94 mm | 48 mm | 474 g | 340 | Y | Oct 2013 | US$ 1 699 | ebay.com | |
| 15. | Sony A7R | 127 mm | 94 mm | 48 mm | 465 g | 340 | Y | Oct 2013 | US$ 2 299 | ebay.com | |
| 16. | Sony A7S II | 127 mm | 96 mm | 60 mm | 627 g | 370 | Y | Sep 2015 | US$ 2 999 | ebay.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 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 K-5 II was launched at a markedly lower price (by 56 percent) than the A7S, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
Sensor comparison
The size of the sensor inside a digital camera is one of the key determinants 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 tend to be associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Pentax K-5 II features an APS-C sensor and the Sony A7S a full frame sensor. The sensor area in the A7S is 130 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.

Despite having a smaller sensor, the Pentax K-5 II offers a higher resolution of 16.1 megapixels, compared with 12 MP of the Sony A7S. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.81μm versus 8.45μm for the A7S). Moreover, it should be noted that the A7S is a somewhat more recent model (by 1 year and 6 months) than the K-5 II, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.
The resolution advantage of the Pentax K-5 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-5 II for good quality output (200 dots per inch) amounts to 24.6 x 16.3 inches or 62.6 x 41.5 cm, for very good quality (250 dpi) 19.7 x 13.1 inches or 50.1 x 33.2 cm, and for excellent quality (300 dpi) 16.4 x 10.9 inches or 41.7 x 27.6 cm. The corresponding values for the Sony A7S are 21.2 x 14.2 inches or 53.8 x 36 cm for good quality, 17 x 11.3 inches or 43.1 x 28.8 cm for very good quality, and 14.1 x 9.4 inches or 35.9 x 24 cm for excellent quality prints.
The Pentax K-5 II has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 80-51200. The corresponding ISO settings for the Sony Alpha A7S are ISO 100 to ISO 102400, with the possibility to increase the ISO range to 50-409600.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under consideration, the A7S has a markedly higher DXO score than the K-5 II (overall score 5 points higher), which will translate into better image quality. The advantage is based on 0.099999999999998 bits higher color depth, 0.9 EV of lower dynamic range, and 1.6 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

| Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Pentax K-5 II | APS-C | 16.1 | 4928 | 3264 | 1080/25p | 23.8 | 14.1 | 1235 | 82 | |
| 2. | Sony A7S | Full Frame | 12.0 | 4240 | 2832 | 1080/60p | 23.9 | 13.2 | 3702 | 87 | |
| 3. | Nikon D7100 | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 24.2 | 13.7 | 1256 | 83 | |
| 4. | Nikon Df | Full Frame | 16.2 | 4928 | 3280 | none | 24.6 | 13.1 | 3279 | 89 | |
| 5. | Olympus E-M5 | Four Thirds | 15.9 | 4608 | 3456 | 1080/60i | 22.8 | 12.3 | 826 | 71 | |
| 6. | Pentax K-3 | APS-C | 24.1 | 6016 | 4000 | 1080/60i | 23.7 | 13.4 | 1216 | 80 | |
| 7. | Pentax K-3 II | APS-C | 24.1 | 6016 | 4000 | 1080/60i | 23.6 | 13.6 | 1106 | 80 | |
| 8. | Pentax K-5 | APS-C | 16.1 | 4928 | 3264 | 1080/25p | 23.7 | 14.1 | 1162 | 82 | |
| 9. | Pentax K-30 | APS-C | 16.1 | 4928 | 3264 | 1080/30p | 23.7 | 13.0 | 1129 | 79 | |
| 10. | Pentax K-50 | APS-C | 16.1 | 4928 | 3264 | 1080/30p | 23.7 | 13.0 | 1120 | 79 | |
| 11. | Pentax K-70 | APS-C | 24.0 | 6000 | 4000 | 1080/60i | 23.8 | 13.1 | 1639 | 80 | |
| 12. | Pentax K-500 | APS-C | 16.1 | 4928 | 3264 | 1080/30p | 23.7 | 13.1 | 1087 | 79 | |
| 13. | Pentax KP | APS-C | 24.1 | 6016 | 4000 | 1080/60i | 23.9 | 13.2 | 1699 | 81 | |
| 14. | Sony A7 | Full Frame | 24.0 | 6000 | 4000 | 1080/60p | 24.8 | 14.2 | 2248 | 90 | |
| 15. | Sony A7R | Full Frame | 36.2 | 7360 | 4912 | 1080/60p | 25.6 | 14.1 | 2746 | 95 | |
| 16. | Sony A7S II | Full Frame | 12.0 | 4240 | 2832 | 4K/30p | 23.6 | 13.3 | 2993 | 85 | |
| 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 A7S provides a faster frame rate than the K-5 II. It can shoot movie footage at 1080/60p, while the Pentax is limited to 1080/25p.
Feature comparison
Beyond body and sensor, cameras can and do differ across a range of features. For example, the A7S has an electronic viewfinder (2400k dots), while the K-5 II 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 A7S has a higher magnification than the one of the K-5 II (0.71x vs 0.61x), 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 K-5 II and Sony A7S 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 K-5 II | optical | Y | 3.0 / 921 | fixed | n | 1/8000s | 7.0/s | Y | Y | |
| 2. | Sony A7S | 2400 | n | 3.0 / 921 | tilting | n | 1/8000s | 5.0/s | n | n | |
| 3. | Nikon D7100 | optical | Y | 3.2 / 1229 | fixed | n | 1/8000s | 6.0/s | Y | n | |
| 4. | Nikon Df | optical | Y | 3.2 / 921 | fixed | n | 1/4000s | 5.5/s | n | n | |
| 5. | Olympus E-M5 | 1440 | n | 3.0 / 610 | tilting | Y | 1/4000s | 9.0/s | n | Y | |
| 6. | Pentax K-3 | optical | Y | 3.2 / 1037 | fixed | n | 1/8000s | 8.3/s | Y | Y | |
| 7. | Pentax K-3 II | optical | Y | 3.2 / 1037 | fixed | n | 1/8000s | 8.3/s | n | Y | |
| 8. | Pentax K-5 | optical | Y | 3.0 / 921 | fixed | n | 1/8000s | 7.0/s | Y | Y | |
| 9. | Pentax K-30 | optical | n | 3.0 / 921 | fixed | n | 1/6000s | 6.0/s | Y | Y | |
| 10. | Pentax K-50 | optical | n | 3.0 / 921 | fixed | n | 1/6000s | 6.0/s | Y | Y | |
| 11. | Pentax K-70 | optical | n | 3.0 / 921 | swivel | n | 1/6000s | 6.0/s | Y | Y | |
| 12. | Pentax K-500 | optical | n | 3.0 / 921 | fixed | n | 1/6000s | 6.0/s | Y | Y | |
| 13. | Pentax KP | optical | n | 3.0 / 921 | tilting | n | 1/6000s | 7.0/s | Y | Y | |
| 14. | Sony A7 | 2400 | n | 3.0 / 1230 | tilting | n | 1/8000s | 5.0/s | n | n | |
| 15. | Sony A7R | 2400 | n | 3.0 / 1230 | tilting | n | 1/8000s | 4.0/s | n | n | |
| 16. | Sony A7S II | 2400 | n | 3.0 / 1229 | tilting | n | 1/8000s | 5.0/s | n | Y | |
| 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 difference between the cameras concerns the presence of an on-board flash. The K-5 II has one, while the A7S does not. While the built-in flash of the K-5 II is not very powerful, it can at times be useful as a fill-in light.
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 A7S 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-5 II 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 K-5 II writes its imaging data to SDXC cards, while the A7S uses SDXC or Memory Stick PRO Duo cards. The A7S supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the K-5 II cannot take advantage of Ultra High Speed SD 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 Pentax K-5 II and Sony Alpha A7S 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 K-5 II | Y | stereo / mono | Y | - | mini | 2.0 | - | - | - | |
| 2. | Sony A7S | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 3. | Nikon D7100 | Y | stereo / mono | Y | Y | mini | 2.0 | - | - | - | |
| 4. | Nikon Df | Y | - / - | - | - | mini | 2.0 | - | - | - | |
| 5. | Olympus E-M5 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 6. | Pentax K-3 | Y | mono / mono | Y | Y | mini | 3.0 | - | - | - | |
| 7. | Pentax K-3 II | Y | mono / mono | Y | Y | mini | 3.0 | - | - | - | |
| 8. | Pentax K-5 | Y | stereo / mono | Y | - | mini | 2.0 | - | - | - | |
| 9. | Pentax K-30 | Y | mono / mono | - | - | - | 2.0 | - | - | - | |
| 10. | Pentax K-50 | Y | mono / mono | - | - | micro | 2.0 | - | - | - | |
| 11. | Pentax K-70 | Y | stereo / mono | Y | - | mini | 2.0 | Y | - | - | |
| 12. | Pentax K-500 | Y | mono / mono | - | - | - | 2.0 | - | - | - | |
| 13. | Pentax KP | Y | stereo / mono | Y | - | - | 2.0 | Y | - | - | |
| 14. | Sony A7 | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 15. | Sony A7R | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 16. | Sony A7S II | 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 A7S offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the K-5 II does not provide wifi capability.
Studio photographers will appreciate that the Pentax K-5 II (unlike the A7S) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the K-5 II and the A7S have been discontinued, but can regularly be found used on ebay. The K-5 II was replaced by the Pentax K-3, while the A7S was followed by the Sony A7S II. Further information on the features and operation of the K-5 II and A7S can be found, respectively, in the Pentax K-5 II Manual (free pdf) or the online Sony A7S Manual.
Review summary
So what is the bottom line? Is there a clear favorite between the Pentax K-5 II and the Sony A7S? Which camera is better? The listing below highlights the relative strengths of the two models.

Reasons to prefer the Pentax K-5 II:
- More detail: Offers more megapixels (16.1 vs 12MP) with a 16% higher linear resolution.
- More dynamic range: Captures a larger spectrum of light and dark details (0.9 EV of extra DR).
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Faster burst: Shoots at higher frequency (7 vs 5 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Longer lasting: Can take more shots (740 versus 380) on a single battery charge.
- 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.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More affordable: Was introduced into a lower priced category (56 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in September 2012).

Advantages of the Sony Alpha A7S:
- Better image quality: Scores markedly higher (5 points) in the DXO overall evaluation.
- Better low-light sensitivity: Can shoot in dim conditions (1.6 stops ISO advantage).
- Better video: Provides higher movie framerates (1080/60p versus 1080/25p).
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- More framing info: Has an electronic viewfinder that displays shooting data.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.71x vs 0.61x).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Less heavy: Has a lower weight (by 271g or 36 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.
- 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.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More modern: Was introduced somewhat (1 year and 6 months) more recently.
If the number of relative strengths (bullet points above) is taken as a guide, the A7S emerges as the winner of the match-up (15 : 12 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 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.
How about other alternatives? Do the specifications of the Pentax K-5 II and the Sony A7S 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the K-5 II and the A7S in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
Expert reviews
This is why hands-on reviews by experts are important. 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.

| Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Pentax K-5 II | 5/5 | .. | .. | 80/100 | 5/5 | 4.5/5 | Sep 2012 | US$ 1 099 | ebay.com | |
| 2. | Sony A7S | 4/5 | .. | .. | 86/100 | 4.5/5 | 5/5 | Apr 2014 | US$ 2 499 | ebay.com | |
| 3. | Nikon D7100 | 5/5 | + + | .. | 85/100 | 4.5/5 | 4.5/5 | Feb 2013 | US$ 1 199 | ebay.com | |
| 4. | Nikon Df | 4/5 | .. | .. | 81/100 | 4/5 | 4/5 | Nov 2013 | US$ 2 749 | ebay.com | |
| 5. | Olympus E-M5 | 4/5 | + + | .. | 80/100 | 4.5/5 | 5/5 | Feb 2012 | US$ 1 299 | ebay.com | |
| 6. | Pentax K-3 | 4/5 | .. | .. | 83/100 | 5/5 | 5/5 | Oct 2013 | US$ 1 299 | ebay.com | |
| 7. | Pentax K-3 II | 4.5/5 | .. | .. | .. | 5/5 | 5/5 | Apr 2015 | US$ 1 099 | ebay.com | |
| 8. | Pentax K-5 | 4/5 | .. | .. | 83/100 | 5/5 | 4.5/5 | Sep 2010 | US$ 1 099 | ebay.com | |
| 9. | Pentax K-30 | 4/5 | .. | .. | 78/100 | 4.5/5 | 4.5/5 | May 2012 | US$ 849 | ebay.com | |
| 10. | Pentax K-50 | 5/5 | .. | .. | .. | 5/5 | 4.5/5 | Jun 2013 | US$ 599 | ebay.com | |
| 11. | Pentax K-70 | 4.5/5 | .. | 4/5 | 79/100 | 4.5/5 | 4.5/5 | Jun 2016 | US$ 649 | ebay.com | |
| 12. | Pentax K-500 | .. | .. | .. | .. | 4.5/5 | 4.5/5 | Jun 2013 | US$ 549 | ebay.com | |
| 13. | Pentax KP | 4/5 | .. | 3/5 | 82/100 | 5/5 | 4.5/5 | Jan 2017 | US$ 1 099 | ebay.com | |
| 14. | Sony A7 | 5/5 | + + | .. | 80/100 | 5/5 | 5/5 | Oct 2013 | US$ 1 699 | ebay.com | |
| 15. | Sony A7R | 5/5 | + + | .. | 82/100 | 4.5/5 | 5/5 | Oct 2013 | US$ 2 299 | ebay.com | |
| 16. | Sony A7S II | 5/5 | + | .. | .. | 4.5/5 | 5/5 | Sep 2015 | US$ 2 999 | ebay.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. | |||||||||||
The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Check K-5 II offers at
ebay.com

Check A7S offers at
ebay.com
Other camera comparisons
Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Fujifilm X100 vs Sony A7S
- Fujifilm XP130 vs Sony A7S
- Leica M10-P vs Pentax K-5 II
- Leica M10-P vs Sony A7S
- Olympus E-PL9 vs Sony A7S
- Panasonic G100 vs Pentax K-5 II
- Panasonic G85 vs Sony A7S
- Panasonic GX850 vs Sony A7S
- Panasonic S1H vs Pentax K-5 II
- Pentax K-3 vs Pentax K-5 II
- Pentax K-5 II vs Sony A7R III
- Pentax K-5 II vs Sony NEX-6
Specifications: Pentax K-5 II vs Sony A7S
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 K-5 II | Sony A7S |
|---|---|---|
| Camera Type | Digital single lens reflex | Mirrorless system camera |
| Camera Lens | Pentax K mount lenses | Sony E mount lenses |
| Launch Date | September 2012 | April 2014 |
| Launch Price | USD 1,099 | USD 2,499 |
| Sensor Specs | Pentax K-5 II | Sony A7S |
| Sensor Technology | CMOS | CMOS |
| Sensor Format | APS-C Sensor | Full Frame Sensor |
| Sensor Size | 23.7 x 15.7 mm | 35.8 x 23.9 mm |
| Sensor Area | 372.09 mm2 | 855.62 mm2 |
| Sensor Diagonal | 28.4 mm | 43 mm |
| Crop Factor | 1.5x | 1.0x |
| Sensor Resolution | 16.1 Megapixels | 12 Megapixels |
| Image Resolution | 4928 x 3264 pixels | 4240 x 2832 pixels |
| Pixel Pitch | 4.81 μm | 8.45 μm |
| Pixel Density | 4.32 MP/cm2 | 1.40 MP/cm2 |
| Moiré control | Anti-Alias filter | Anti-Alias filter |
| Movie Capability | 1080/25p Video | 1080/60p Video |
| ISO Setting | 100 - 12,800 ISO | 100 - 102,400 ISO |
| ISO Boost | 80 - 51,200 ISO | 50 - 409,600 ISO |
| Image Processor | PRIME II | BIONZ X |
| DXO Sensor Quality (score) | 82 | 87 |
| DXO Color Depth (bits) | 23.8 | 23.9 |
| DXO Dynamic Range (EV) | 14.1 | 13.2 |
| DXO Low Light (ISO) | 1235 | 3702 |
| Screen Specs | Pentax K-5 II | Sony A7S |
| Viewfinder Type | Optical viewfinder | Electronic viewfinder |
| Viewfinder Field of View | 100% | 100% |
| Viewfinder Magnification | 0.61x | 0.71x |
| Viewfinder Resolution | 2400k dots | |
| Top-Level Screen | Control Panel | no Top Display |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.0inch | 3.0inch |
| LCD Resolution | 921k dots | 921k dots |
| LCD Attachment | Fixed screen | Tilting screen |
| Shooting Specs | Pentax K-5 II | Sony A7S |
| Focus System | Phase-detect AF | Contrast-detect AF |
| Manual Focusing Aid | no Peaking Feature | Focus Peaking |
| Max Shutter Speed (mechanical) | 1/8000s | 1/8000s |
| Continuous Shooting | 7 shutter flaps/s | 5 shutter flaps/s |
| Electronic Shutter | no E-Shutter | YES |
| Time-Lapse Photography | Intervalometer built-in | no Intervalometer |
| Image Stabilization | In-body stabilization | Lens stabilization only |
| Fill Flash | Built-in Flash | no On-Board Flash |
| Storage Medium | SDXC cards | MS or SDXC cards |
| Single or Dual Card Slots | Single card slot | Single card slot |
| UHS card support | no | UHS-I |
| Connectivity Specs | Pentax K-5 II | Sony A7S |
| External Flash | Hotshoe | Hotshoe |
| Studio Flash | PC Sync socket | no PC Sync |
| USB Connector | USB 2.0 | USB 2.0 |
| 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 |
| Body Specs | Pentax K-5 II | Sony A7S |
| Environmental Sealing | Weathersealed body | Weathersealed body |
| Battery Type | Pentax D-LI90 | Sony NP-FW50 |
| Battery Life (CIPA) | 740 shots per charge | 380 shots per charge |
| In-Camera Charging | no USB charging | USB charging |
| Body Dimensions |
131 x 97 x 73 mm (5.2 x 3.8 x 2.9 in) |
127 x 94 x 48 mm (5.0 x 3.7 x 1.9 in) |
| Camera Weight | 760 g (26.8 oz) | 489 g (17.2 oz) |

Check K-5 II offers at
ebay.com

Check A7S offers at
ebay.com
Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

