Pentax Q vs Sony A7R III
The Pentax Q and the Sony Alpha A7R III are two digital cameras that were announced, respectively, in June 2011 and October 2017. Both the Pentax Q and the A7R III are mirrorless interchangeable lens cameras that are based on a 1/2.3-inch (Pentax Q) and a full frame (A7R III) sensor. The Pentax has a resolution of 12 megapixels, whereas the Sony provides 42.2 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Pentax Q||Sony A7R III|
|Mirrorless system camera||Mirrorless system camera|
|Pentax Q mount lenses||Sony E mount lenses|
|12 MP, 1/2.3" Sensor||42.2 MP, Full Frame Sensor|
|1080/30p Video||4K/30p Video|
|ISO 125-6400||ISO 100-32000 (50-102400)|
|Viewfinder optional||Electronic viewfinder (3686k dots)|
|3.0" LCD, 460k dots||3.0" LCD, 1440k dots|
|Fixed screen (not touch-sensitive)||Tilting touchscreen|
|1.5 shutter flaps per second||10 shutter flaps per second|
|In-body stabilization||In-body stabilization|
|Not weather sealed||Weathersealed body|
|230 shots per battery charge||650 shots per battery charge|
|98 x 57 x 31 mm, 180 g||127 x 96 x 74 mm, 650 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax Q and the Sony Alpha A7R III? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.
Body comparison: Pentax Q vs Sony A7R III
The physical size and weight of the Pentax Q and the Sony A7R III are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth dimensions are rounded to the nearest millimeter.
The Pentax Q can be obtained in two different colors (black, white), while the A7R III 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 A7R III is considerably larger (118 percent) than the Pentax Q. Moreover, the A7R III is substantially heavier (261 percent) than the Pentax Q. It is noteworthy in this context that the A7R III is splash and dust-proof, while the Pentax Q does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. 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.
The power pack in the A7R III 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, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|Pentax Q»||3.9 in||2.2 in||1.2 in||6.3 oz||230||n||Jun 2011||649||-||Pentax Q|
|Sony A7R III«||5.0 in||3.8 in||2.9 in||22.9 oz||650||Y||Oct 2017||3,199||Sony A7R III|
|Fujifilm X10« »||4.6 in||2.8 in||2.2 in||12.3 oz||270||n||Sep 2011||599||-||Fujifilm X10|
|Olympus XZ-2« »||4.4 in||2.6 in||1.9 in||12.2 oz||340||n||Sep 2012||599||-||Olympus XZ-2|
|Olympus E-P3« »||4.8 in||2.7 in||1.3 in||13.0 oz||330||n||Jun 2011||799||-||Olympus E-P3|
|Olympus E-PL2« »||4.5 in||2.8 in||1.7 in||12.8 oz||280||n||Jan 2011||599||-||Olympus E-PL2|
|Olympus E-PL3« »||4.3 in||2.5 in||1.5 in||11.0 oz||300||n||Jun 2011||599||-||Olympus E-PL3|
|Olympus E-PL1« »||4.5 in||2.8 in||1.7 in||11.8 oz||290||n||Feb 2010||599||-||Olympus E-PL1|
|Olympus E-620« »||5.1 in||3.7 in||2.4 in||18.4 oz||500||n||Feb 2009||699||-||Olympus E-620|
|Panasonic GF3« »||4.3 in||2.6 in||1.3 in||9.3 oz||300||n||Jun 2011||549||-||Panasonic GF3|
|Panasonic G2« »||4.9 in||3.3 in||2.9 in||15.1 oz||360||n||Mar 2010||599||-||Panasonic G2|
|Panasonic GF2« »||4.4 in||2.7 in||1.3 in||10.9 oz||300||n||Nov 2010||549||-||Panasonic GF2|
|Sony A7 III« »||5.0 in||3.8 in||2.9 in||22.9 oz||610||Y||Feb 2018||1,999||Sony A7 III|
|Sony A9« »||5.0 in||3.8 in||2.5 in||23.7 oz||650||Y||Apr 2017||4,499||Sony A9|
|Sony A99 II« »||5.6 in||4.1 in||3.0 in||29.9 oz||490||Y||Sep 2016||3,199||Sony A99 II|
|Sony A7R II« »||5.0 in||3.8 in||2.4 in||22.0 oz||290||Y||Jun 2015||3,199||-||Sony A7R II|
|Sony A7S II« »||5.0 in||3.8 in||2.4 in||22.1 oz||370||Y||Sep 2015||2,999||Sony A7S II|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. 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 Pentax Q was launched at a markedly lower price (by 80 percent) than the A7R III, 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: Pentax Q vs Sony A7R III
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 Q features a 1/2.3-inch sensor and the Sony A7R III a full frame sensor. The sensor area in the A7R III is 2979 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 1.0. The sensor in the Pentax Q has a native 4:3 aspect ratio, while the one in the A7R III offers a 3:2 aspect.
With 42.2MP, the A7R III offers a higher resolution than the Pentax Q (12MP), but the A7R III nevertheless has larger individual pixels (pixel pitch of 4.52μm versus 1.53μm for the Pentax Q) due to its larger sensor. Moreover, the A7R III is a much more recent model (by 6 years and 4 months) than the Pentax Q, 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 the A7R III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony A7R III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R III for good quality output (200 dots per inch) amounts to 39.8 x 26.5 inch or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inch or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inch or 67.3 x 44.9 cm. The corresponding values for the Pentax Q are 20 x 15 inch or 50.8 x 38.1 cm for good quality, 16 x 12 inch or 40.6 x 30.5 cm for very good quality, and 13.3 x 10 inch or 33.9 x 25.4 cm for excellent quality prints.
The A7R III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the Pentax Q, the A7R III has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
The Pentax Q has a native sensitivity range from ISO 125 to ISO 6400. The corresponding ISO settings for the Sony Alpha A7R III are ISO 100 to ISO 32000, with the possibility to increase the ISO range to 50-102400.
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. Of the two cameras under consideration, the A7R III offers substantially better image quality than the Pentax Q (overall score 53 points higher). The advantage is based on 5.8 bits higher color depth, 3.6 EV in additional dynamic range, and 4.2 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Pentax Q»||1/2.3||12.0||4000||3000||1080/30p||20.2||11.1||189||47||Pentax Q|
|Sony A7R III«||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100||Sony A7R III|
|Fujifilm X10« »||2/3||12.0||4000||3000||1080/30p||20.5||11.3||245||50||Fujifilm X10|
|Olympus XZ-2« »||1/1.7||11.8||3968||2976||1080/30p||20.4||11.3||216||49||Olympus XZ-2|
|Olympus E-P3« »||Four Thirds||12.2||4032||3024||1080/60i||20.8||10.1||536||51||Olympus E-P3|
|Olympus E-PL2« »||Four Thirds||12.2||4032||3024||720/30p||21.4||10.2||573||55||Olympus E-PL2|
|Olympus E-PL3« »||Four Thirds||12.2||4032||3024||1080/60i||20.9||10.3||499||52||Olympus E-PL3|
|Olympus E-PL1« »||Four Thirds||12.2||4032||3024||720/30p||21.5||10.1||487||54||Olympus E-PL1|
|Olympus E-620« »||Four Thirds||12.2||4032||3024||-||21.3||10.3||536||55||Olympus E-620|
|Panasonic GF3« »||Four Thirds||12.0||4000||3000||1080/60i||20.6||10.0||458||49||Panasonic GF3|
|Panasonic G2« »||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||493||53||Panasonic G2|
|Panasonic GF2« »||Four Thirds||12.0||4000||3000||1080/60i||21.2||10.3||506||54||Panasonic GF2|
|Sony A7 III« »||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96||Sony A7 III|
|Sony A9« »||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92||Sony A9|
|Sony A99 II« »||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92||Sony A99 II|
|Sony A7R II« »||Full Frame||42.2||7952||5304||4K/30p||26.0||13.9||3434||98||Sony A7R II|
|Sony A7S II« »||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85||Sony A7S II|
Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the A7R III provides a better video resolution than the Pentax Q. It can shoot movie footage at 4K/30p, while the Pentax is limited to 1080/30p.
Feature comparison: Pentax Q vs Sony A7R III
Beyond body and sensor, cameras can and do differ across a range of features. For example, the A7R III has an electronic viewfinder (3686k dots), which can be very helpful when shooting in bright sunlight. In contrast, the Pentax Q relies on live view and the rear LCD for framing. That said, the Pentax Q can be equipped with an optional viewfinder – the O-VF1. The following table reports on some other key feature differences and similarities of the Pentax Q, the Sony A7R III, and comparable cameras.
|Pentax Q»||-||n||3.0||460||fixed||n||1/2000s||1.5||Y||Y||Pentax Q|
|Sony A7R III«||3686||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y||Sony A7R III|
|Fujifilm X10« »||optical||n||2.8||460||fixed||n||1/4000s||10.0||Y||Y||Fujifilm X10|
|Olympus XZ-2« »||-||n||3.0||920||tilting||Y||1/2000s||5.0||Y||Y||Olympus XZ-2|
|Olympus E-P3« »||-||n||3.0||614||fixed||Y||1/4000s||3.0||Y||Y||Olympus E-P3|
|Olympus E-PL2« »||-||n||3.0||460||fixed||n||1/4000s||3.0||Y||Y||Olympus E-PL2|
|Olympus E-PL3« »||-||n||3.0||460||tilting||n||1/4000s||5.5||n||Y||Olympus E-PL3|
|Olympus E-PL1« »||-||n||2.7||230||fixed||n||1/2000s||3.0||Y||Y||Olympus E-PL1|
|Olympus E-620« »||optical||n||2.7||230||swivel||n||1/4000s||4.0||Y||Y||Olympus E-620|
|Panasonic GF3« »||-||n||3.0||460||fixed||Y||1/4000s||3.2||Y||n||Panasonic GF3|
|Panasonic G2« »||1440||n||3.0||460||swivel||Y||1/4000s||2.6||Y||n||Panasonic G2|
|Panasonic GF2« »||-||n||3.0||460||fixed||Y||1/4000s||2.6||Y||n||Panasonic GF2|
|Sony A7 III« »||2359||n||3.0||922||tilting||Y||1/8000s||10.0||n||Y||Sony A7 III|
|Sony A9« »||3686||n||3.0||1440||tilting||Y||1/8000s||20.0||n||Y||Sony A9|
|Sony A99 II« »||2400||Y||3.0||1229||full-flex||n||1/8000s||12.0||n||Y||Sony A99 II|
|Sony A7R II« »||2400||n||3.0||1229||tilting||n||1/8000s||5.0||n||Y||Sony A7R II|
|Sony A7S II« »||2400||n||3.0||1229||tilting||n||1/8000s||5.0||n||Y||Sony A7S II|
One difference between the cameras concerns the presence of an on-board flash. The Pentax Q has one, while the A7R III does not. While the built-in flash of the Pentax Q 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 A7R III is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).
The Pentax Q and the Sony A7R III both have an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.
The Pentax Q writes its imaging data to SDXC cards, while the A7R III uses SDXC or Memory Stick PRO Duo cards. The A7R III features dual card slots, which can be very useful in case a memory card fails. In contrast, the Pentax Q only has one slot. The A7R III supports UHS-II cards on its first slot and UHS-I on its second one, while the Pentax Q cannot take advantage of Ultra High Speed SD cards.
Connectivity comparison: Pentax Q vs Sony A7R III
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 Q and Sony Alpha A7R III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Pentax Q»||Y||mono||mono||-||-||mini||2.0||-||-||-||Pentax Q|
|Sony A7R III«||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7R III|
|Fujifilm X10« »||Y||stereo||mono||-||-||mini||2.0||-||-||-||Fujifilm X10|
|Olympus XZ-2« »||Y||stereo||mono||-||-||mini||2.0||-||-||-||Olympus XZ-2|
|Olympus E-P3« »||Y||stereo||-||-||-||mini||2.0||-||-||-||Olympus E-P3|
|Olympus E-PL2« »||Y||stereo||-||-||-||mini||2.0||-||-||-||Olympus E-PL2|
|Olympus E-PL3« »||Y||stereo||-||-||-||mini||2.0||-||-||-||Olympus E-PL3|
|Olympus E-PL1« »||Y||stereo||-||-||-||mini||2.0||-||-||-||Olympus E-PL1|
|Olympus E-620« »||Y||-||-||-||-||-||2.0||-||-||-||Olympus E-620|
|Panasonic GF3« »||-||stereo||mono||-||-||mini||2.0||-||-||-||Panasonic GF3|
|Panasonic G2« »||Y||stereo||mono||-||-||mini||2.0||-||-||-||Panasonic G2|
|Panasonic GF2« »||Y||stereo||mono||-||-||mini||2.0||-||-||-||Panasonic GF2|
|Sony A7 III« »||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7 III|
|Sony A9« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A9|
|Sony A99 II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A99 II|
|Sony A7R II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7R II|
|Sony A7S II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7S II|
It is notable that the A7R III offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the Pentax Q does not offer wifi capability.
Studio photographers will appreciate that the Sony A7R III (unlike the Pentax Q) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The A7R III is a recent model that features in the current product line-up of Sony. In contrast, the Pentax Q has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the Pentax Q was succeeded by the Pentax Q10. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Pentax and Sony websites.
Review summary: Pentax Q vs Sony A7R III
So what conclusions can be drawn? Which of the two cameras – the Pentax Q or the Sony A7R III – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.
Arguments in favor of the Pentax Q:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More compact: Is smaller (98x57mm vs 127x96mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 470g or 72 percent) and hence easier to carry around.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (80 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in June 2011).
Reasons to prefer the Sony Alpha A7R III:
- More detail: Has more megapixels (42.2 vs 12MP), which boosts linear resolution by 91%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better image quality: Scores substantially higher (53 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (5.8 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (3.6 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (4.2 stops ISO advantage).
- Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
- Better live-view autofocus: Features on-sensor phase-detection for quicker and more confident autofocus.
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- Easier framing: Has an electronic viewfinder for image framing and settings control.
- More detailed LCD: Has a higher resolution rear screen (1440k vs 460k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 1.5 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Longer lasting: Gets more shots (650 versus 230) out of a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- Faster buffer clearing: Supports Ultra High Speed (UHS-II and UHS-I) SDXC cards.
- More modern: Reflects 6 years and 4 months of technical progress since the Pentax Q launch.
If the number of relative strengths (bullet points above) is taken as a guide, the A7R III is the clear winner of the contest (28 : 6 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 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 Q and the Sony A7R III place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing 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 Pentax Q and the A7R III 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: Pentax Q vs Sony A7R III
This is why expert reviews are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
|Pentax Q»||-||-||4/5||3.5/5||3.5/5||Jun 2011||649||-||Pentax Q|
|Sony A7R III«||+ +||90/100||4.5/5||5/5||5/5||Oct 2017||3,199||Sony A7R III|
|Fujifilm X10« »||-||76/100||4/5||3.5/5||4.5/5||Sep 2011||599||-||Fujifilm X10|
|Olympus XZ-2« »||+||-||4.5/5||4/5||4.5/5||Sep 2012||599||-||Olympus XZ-2|
|Olympus E-P3« »||83/100||74/100||4.5/5||4.5/5||4.5/5||Jun 2011||799||-||Olympus E-P3|
|Olympus E-PL2« »||83/100||71/100||4.5/5||4.5/5||4.5/5||Jan 2011||599||-||Olympus E-PL2|
|Olympus E-PL3« »||+ +||72/100||4.5/5||-||4/5||Jun 2011||599||-||Olympus E-PL3|
|Olympus E-PL1« »||86/100||69/100||4/5||4.5/5||4.5/5||Feb 2010||599||-||Olympus E-PL1|
|Olympus E-620« »||88/100||72/100||4.5/5||o||5/5||Feb 2009||699||-||Olympus E-620|
|Panasonic GF3« »||82/100||71/100||4.5/5||4.5/5||4/5||Jun 2011||549||-||Panasonic GF3|
|Panasonic G2« »||-||72/100||4/5||4/5||4.5/5||Mar 2010||599||-||Panasonic G2|
|Panasonic GF2« »||82/100||70/100||4.5/5||4.5/5||4.5/5||Nov 2010||549||-||Panasonic GF2|
|Sony A7 III« »||+ +||89/100||5/5||5/5||5/5||Feb 2018||1,999||Sony A7 III|
|Sony A9« »||+ +||89/100||5/5||5/5||5/5||Apr 2017||4,499||Sony A9|
|Sony A99 II« »||-||85/100||4.5/5||4.5/5||4.5/5||Sep 2016||3,199||Sony A99 II|
|Sony A7R II« »||+ +||90/100||5/5||4.5/5||5/5||Jun 2015||3,199||-||Sony A7R II|
|Sony A7S II« »||+||-||4.5/5||5/5||5/5||Sep 2015||2,999||Sony A7S II|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.|
The review scores listed above should be treated 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. Thus, a score needs to be put into the context of the launch date and the launch price 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.
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. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 1D Mark IV vs Sony A7R III
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Specifications: Pentax Q vs Sony A7R III
Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.
|Camera Model||Pentax Q||Sony A7R III|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Pentax Q mount lenses||Sony E mount lenses|
|Launch Date||June 2011||October 2017|
|Launch Price||USD 649||USD 3199|
|Sensor Specs||Pentax Q||Sony A7R III|
|Sensor Format||1/2.3" Sensor||Full Frame Sensor|
|Sensor Size||6.17 x 4.55 mm||35.9 x 24.0 mm|
|Sensor Area||28.0735 mm2||861.6 mm2|
|Sensor Diagonal||7.7 mm||43.2 mm|
|Sensor Resolution||12 Megapixels||42.2 Megapixels|
|Image Resolution||4000 x 3000 pixels||7952 x 5304 pixels|
|Pixel Pitch||1.53 μm||4.52 μm|
|Pixel Density||42.74 MP/cm2||4.90 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/30p Video||4K/30p Video|
|ISO Setting||125-6400 ISO||100-32000 ISO|
|ISO Boost||no Enhancement||50-102400 ISO|
|DXO Sensor Quality (score)||47||100|
|DXO Color Depth (bits)||20.2||26.0|
|DXO Dynamic Range (EV)||11.1||14.7|
|DXO Low Light (ISO)||189||3523|
|Screen Specs||Pentax Q||Sony A7R III|
|Viewfinder Type||Viewfinder optional||Electronic viewfinder|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||3686k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||460k dots||1440k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Pentax Q||Sony A7R III|
|Autofocus System||Contrast-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||No Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/2000/s||1/8000/s|
|Continuous Shooting||1.5 shutter flaps/s||10 shutter flaps/s|
|Electronic Shutter||no E-Shutter||YES|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Image Stabilization||In-body stabilization||In-body stabilization|
|Fill Flash||Build-in Flash||no On-Board Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Dual card slots|
|UHS card support||no||Single UHS-II|
|Connectivity Specs||Pentax Q||Sony A7R III|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 3.1|
|HDMI Port||mini HDMI||micro HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Bluetooth Support||no Bluetooth||Bluetooth built-in|
|Body Specs||Pentax Q||Sony A7R III|
|Environmental Sealing||Not weather sealed||Weathersealed body|
|Battery Type||D-LI68 power pack||NP-FZ100 power pack|
|Battery Life (CIPA)||230 shots per charge||650 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
98 x 57 x 31 mm
(3.9 x 2.2 x 1.2 in)
127 x 96 x 74 mm
(5.0 x 3.8 x 2.9 in)
|Camera Weight||180 g (6.3 oz)||650 g (22.9 oz)|
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