Pentax K-3 III vs Sony A7C
The Pentax K-3 III and the Sony Alpha A7C are two enthusiast cameras that were officially introduced, respectively, in March 2021 and September 2020. The K-3 III is a DSLR, while the A7C is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (K-3 III) and a full frame (A7C) sensor. The Pentax has a resolution of 25.6 megapixels, whereas the Sony provides 24 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax K-3 III and the Sony Alpha A7C? 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.
An illustration of the physical size and weight of the Pentax K-3 III and the Sony A7C is provided in the side-by-side display below. 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.
Both cameras are available in two different colors (black, silver).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7C is considerably smaller (37 percent) than the Pentax K-3 III. Moreover, the A7C is substantially lighter (38 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 D-LI90 battery, while the A7C can take 740 images on a single charge of its NP-FZ100 power pack. The power pack in the A7C can be charged via the USB port, which can be very convenient when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.
|1.||Pentax K-3 III||135 mm||104 mm||74 mm||820 g||800||Y||Mar 2021||1,999||amazon.com|
|2.||Sony A7C||124 mm||71 mm||60 mm||509 g||740||Y||Sep 2020||1,799||amazon.com|
|3.||Fujifilm X-H1||140 mm||97 mm||86 mm||673 g||310||Y||Feb 2018||1,899||ebay.com|
|4.||Nikon D780||144 mm||116 mm||76 mm||840 g||2260||Y||Jan 2020||2,299||amazon.com|
|5.||Nikon Z6 II||134 mm||101 mm||70 mm||705 g||410||Y||Oct 2020||1,999||amazon.com|
|6.||Nikon Z6||134 mm||101 mm||67 mm||675 g||310||Y||Aug 2018||1,999||ebay.com|
|7.||Olympus E-M1 II||134 mm||91 mm||67 mm||574 g||440||Y||Sep 2016||1,999||ebay.com|
|8.||Panasonic GH6||138 mm||100 mm||100 mm||823 g||360||Y||Feb 2022||2,199||amazon.com|
|9.||Panasonic S5||133 mm||98 mm||82 mm||714 g||440||Y||Sep 2020||1,999||amazon.com|
|10.||Pentax KP||132 mm||101 mm||76 mm||703 g||390||Y||Jan 2017||1,099||ebay.com|
|11.||Pentax K-70||126 mm||93 mm||74 mm||688 g||410||Y||Jun 2016||649||amazon.com|
|12.||Pentax K-3 II||131 mm||100 mm||77 mm||800 g||720||Y||Apr 2015||1,099||ebay.com|
|13.||Pentax K-3||131 mm||100 mm||77 mm||800 g||560||Y||Oct 2013||1,299||ebay.com|
|14.||Sony A9||127 mm||96 mm||63 mm||673 g||650||Y||Apr 2017||4,499||ebay.com|
|15.||Sony A6500||120 mm||67 mm||53 mm||453 g||350||Y||Oct 2016||1,399||ebay.com|
|16.||Sony A7 II||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999||ebay.com|
|17.||Sony A7||127 mm||94 mm||48 mm||474 g||340||Y||Oct 2013||1,699||ebay.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 was somewhat cheaper (by 10 percent) than the K-3 III 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its 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 a full frame sensor. The sensor area in the A7C is 135 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-3 III offers a higher resolution of 25.6 megapixels, compared with 24 MP of the Sony A7C. 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 3.76μm versus 5.94μm for the A7C). However, it should be noted that the K-3 III is a somewhat more recent model (by 6 months) than the A7C, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage. Coming back to sensor resolution, it should be mentioned that the K-3 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The A7C has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the A7C, 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 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 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.
|1.||Pentax K-3 III||APS-C||25.6||6192||4128||4K/30p||24.2||13.7||2083||85|
|2.||Sony A7C||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3407||95|
|4.||Nikon D780||Full Frame||24.3||6048||4024||4K/30p||25.3||14.3||2877||95|
|5.||Nikon Z6 II||Full Frame||24.3||6048||4024||4K/60p||25.0||14.4||3303||94|
|6.||Nikon Z6||Full Frame||24.3||6048||4024||4K/30p||25.3||14.3||3299||95|
|7.||Olympus E-M1 II||Four Thirds||20.2||5184||3888||4K/30p||23.7||12.8||1312||80|
|8.||Panasonic GH6||Four Thirds||25.0||5776||4336||5.7K/60p||23.4||13.4||1555||77|
|9.||Panasonic S5||Full Frame||24.0||6000||4000||4K/60p||25.1||14.5||2697||94|
|12.||Pentax K-3 II||APS-C||24.1||6016||4000||1080/60i||23.6||13.6||1106||80|
|14.||Sony A9||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92|
|16.||Sony A7 II||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|17.||Sony A7||Full Frame||24.0||6000||4000||1080/60p||24.8||14.2||2248||90|
|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 have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (4K/30p).
Apart from body and sensor, cameras can and do differ across a range of features. For example, the A7C 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%), but the viewfinder of the K-3 III has a higher magnification than the one of the A7C (0.70x vs 0.59x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Pentax K-3 III, the Sony A7C, and comparable cameras.
|1.||Pentax K-3 III||optical||Y||3.2 / 1620||fixed||Y||1/8000s||12.0/s||n||Y|
|2.||Sony A7C||2360||n||3.0 / 922||swivel||Y||1/4000s||10.0/s||n||Y|
|3.||Fujifilm X-H1||3690||Y||3.0 / 1040||full-flex||Y||1/8000s||14.0/s||n||Y|
|4.||Nikon D780||optical||Y||3.2 / 2359||tilting||Y||1/8000s||12.0/s||n||n|
|5.||Nikon Z6 II||3690||Y||3.2 / 2100||tilting||Y||1/8000s||14.0/s||n||Y|
|6.||Nikon Z6||3690||Y||3.2 / 2100||tilting||Y||1/8000s||12.0/s||n||Y|
|7.||Olympus E-M1 II||2360||n||3.0 / 1037||swivel||Y||1/8000s||18.0/s||n||Y|
|8.||Panasonic GH6||3680||n||3.0 / 1840||swivel||Y||1/8000s||14.0/s||n||Y|
|9.||Panasonic S5||2360||n||3.0 / 1840||swivel||Y||1/8000s||7.0/s||n||Y|
|10.||Pentax KP||optical||n||3.0 / 921||tilting||n||1/6000s||7.0/s||Y||Y|
|11.||Pentax K-70||optical||n||3.0 / 921||swivel||n||1/6000s||6.0/s||Y||Y|
|12.||Pentax K-3 II||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3/s||n||Y|
|13.||Pentax K-3||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3/s||Y||Y|
|14.||Sony A9||3686||n||3.0 / 1440||tilting||Y||1/8000s||20.0/s||n||Y|
|15.||Sony A6500||2359||n||3.0 / 922||tilting||Y||1/4000s||11.0/s||Y||Y|
|16.||Sony A7 II||2400||n||3.0 / 1230||tilting||n||1/8000s||5.0/s||n||Y|
|17.||Sony A7||2400||n||3.0 / 1230||tilting||n||1/8000s||5.0/s||n||n|
|Notes: *) 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 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 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 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 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 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 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).
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 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Pentax K-3 III||Y||stereo / mono||Y||Y||micro||3.2||Y||-||Y|
|2.||Sony A7C||Y||stereo / mono||Y||Y||micro||3.2||Y||Y||Y|
|3.||Fujifilm X-H1||Y||stereo / mono||Y||-||micro||3.0||Y||-||-|
|4.||Nikon D780||Y||stereo / mono||Y||Y||mini||3.1||Y||-||Y|
|5.||Nikon Z6 II||Y||stereo / mono||Y||Y||micro||3.2||Y||-||Y|
|6.||Nikon Z6||Y||stereo / mono||Y||Y||micro||3.1||Y||-||Y|
|7.||Olympus E-M1 II||Y||stereo / mono||Y||Y||micro||3.0||Y||-||-|
|8.||Panasonic GH6||Y||stereo / mono||Y||Y||full||3.2||Y||-||Y|
|9.||Panasonic S5||Y||stereo / mono||Y||Y||micro||3.2||Y||-||Y|
|10.||Pentax KP||Y||stereo / mono||Y||-||-||2.0||Y||-||-|
|11.||Pentax K-70||Y||stereo / mono||Y||-||mini||2.0||Y||-||-|
|12.||Pentax K-3 II||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|13.||Pentax K-3||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|14.||Sony A9||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||Y|
|15.||Sony A6500||Y||stereo / mono||Y||-||micro||2.0||Y||Y||-|
|16.||Sony A7 II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|17.||Sony A7||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
Studio photographers will appreciate that the Pentax K-3 III (unlike the A7C) 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 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 does not have a direct predecessor. Further information on the features and operation of the K-3 III and A7C can be found, respectively, in the Pentax K-3 III Manual (free pdf) or the online Sony A7C Manual.
So what conclusions can be drawn? Is there a clear favorite between the Pentax K-3 III and the Sony A7C? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
Reasons to prefer the Pentax K-3 III:
- 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.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x vs 0.59x).
- 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 922k 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.
- 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 modern: Is somewhat more recent (announced 6 months after the A7C).
Arguments in favor of the Sony Alpha A7C:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
- Richer colors: The pixel size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
- 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 311g or 38 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 device pairing: Supports NFC for fast wireless image transfer over short distances.
- More heavily discounted: Has been on the market for longer (launched in September 2020).
If the count of individual advantages (bullet points above) is taken as a guide, the A7C emerges as the winner of the match-up (16 : 13 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-3 III and the Sony A7C 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 incomplete and does no justice, for example, to the way the K-3 III or the A7C perform in practice. 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.
This is where reviews by experts come in. 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.
|1.||Pentax K-3 III||4/5||..||3/5||..||4.5/5||..||Mar 2021||1,999||amazon.com|
|2.||Sony A7C||3.5/5||..||3.5/5||86/100||4/5||4/5||Sep 2020||1,799||amazon.com|
|3.||Fujifilm X-H1||..||+||5/5||86/100||4.5/5||4.5/5||Feb 2018||1,899||ebay.com|
|4.||Nikon D780||5/5||..||5/5||87/100||4.5/5||4.5/5||Jan 2020||2,299||amazon.com|
|5.||Nikon Z6 II||4.5/5||..||4/5||89/100||4.5/5||4.5/5||Oct 2020||1,999||amazon.com|
|6.||Nikon Z6||5/5||..||5/5||89/100||4.5/5||5/5||Aug 2018||1,999||ebay.com|
|7.||Olympus E-M1 II||5/5||+ +||5/5||85/100||4.5/5||4.5/5||Sep 2016||1,999||ebay.com|
|8.||Panasonic GH6||5/5||+ +||5/5||87/100||5/5||5/5||Feb 2022||2,199||amazon.com|
|9.||Panasonic S5||4.5/5||+ +||4.5/5||88/100||4.5/5||4.5/5||Sep 2020||1,999||amazon.com|
|10.||Pentax KP||4/5||..||3/5||82/100||5/5||4.5/5||Jan 2017||1,099||ebay.com|
|11.||Pentax K-70||4.5/5||..||4/5||79/100||4.5/5||4.5/5||Jun 2016||649||amazon.com|
|12.||Pentax K-3 II||4.5/5||..||..||..||5/5||5/5||Apr 2015||1,099||ebay.com|
|13.||Pentax K-3||4/5||..||..||83/100||5/5||5/5||Oct 2013||1,299||ebay.com|
|14.||Sony A9||5/5||+ +||4.8/5||89/100||5/5||5/5||Apr 2017||4,499||ebay.com|
|15.||Sony A6500||5/5||+ +||3.5/5||85/100||4.5/5||4.5/5||Oct 2016||1,399||ebay.com|
|16.||Sony A7 II||5/5||+||4/5||82/100||4.5/5||5/5||Nov 2014||1,999||ebay.com|
|17.||Sony A7||5/5||+ +||..||80/100||5/5||5/5||Oct 2013||1,699||ebay.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated with care, 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 comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
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 make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 1D Mark II vs Sony A7C
- Canon 1D X vs Pentax K-3 III
- Canon 1D vs Sony A7C
- Canon 5DS R vs Sony A7C
- Canon T4i vs Sony A7C
- Canon XC10 vs Pentax K-3 III
- Nikon Z6 vs Sony A7C
- Olympus E-PL9 vs Pentax K-3 III
- Pentax K-3 II vs Pentax K-3 III
- Pentax K-3 III vs Ricoh WG-6
- Pentax K-3 III vs Sony A7R
- Ricoh WG-6 vs Sony A7C
Specifications: Pentax K-3 III vs Sony A7C
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-3 III||Sony A7C|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Pentax K mount lenses||Sony E mount lenses|
|Launch Date||March 2021||September 2020|
|Launch Price||USD 1,999||USD 1,799|
|Sensor Specs||Pentax K-3 III||Sony A7C|
|Sensor Format||APS-C Sensor||Full Frame Sensor|
|Sensor Size||23.3 x 15.5 mm||35.6 x 23.8 mm|
|Sensor Area||361.15 mm2||847.28 mm2|
|Sensor Diagonal||28 mm||42.8 mm|
|Sensor Resolution||25.6 Megapixels||24 Megapixels|
|Image Resolution||6192 x 4128 pixels||6000 x 4000 pixels|
|Pixel Pitch||3.76 μm||5.94 μm|
|Pixel Density||7.08 MP/cm2||2.83 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||4K/30p Video||4K/30p Video|
|ISO Setting||100 - 160,000 ISO||100 - 51,200 ISO|
|ISO Boost||no Enhancement||50 - 204,800 ISO|
|Image Processor||PRIME V||BIONZ X|
|DXO Sensor Quality (score)||..||95|
|DXO Color Depth (bits)||..||25.0|
|DXO Dynamic Range (EV)||..||14.7|
|DXO Low Light (ISO)||..||3407|
|Screen Specs||Pentax K-3 III||Sony A7C|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|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||922k dots|
|LCD Attachment||Fixed screen||Swivel screen|
|Shooting Specs||Pentax K-3 III||Sony A7C|
|Focus System||Phase-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000s||1/4000s|
|Continuous Shooting||12 shutter flaps/s||10 shutter flaps/s|
|Shutter Life Expectancy||200 000 actuations||200 000 actuations|
|Electronic Shutter||no E-Shutter||up to 1/8000s|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Image Stabilization||In-body stabilization||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||Single UHS-II||UHS-II|
|Connectivity Specs||Pentax K-3 III||Sony A7C|
|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|
|Near-Field Communication||no NFC||NFC 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|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||800 shots per charge||740 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
135 x 104 x 74 mm
(5.3 x 4.1 x 2.9 in)
124 x 71 x 60 mm
(4.9 x 2.8 x 2.4 in)
|Camera Weight||820 g (28.9 oz)||509 g (18.0 oz)|
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