Sony A7R III vs Pentax Q
The Sony Alpha A7R III and the Pentax Q are two digital cameras that were revealed to the public, respectively, in October 2017 and June 2011. Both the A7R III and the Pentax Q are mirrorless interchangeable lens cameras that are based on a full frame (A7R III) and a 1/2.3-inch (Pentax Q) sensor. The Sony has a resolution of 42.2 megapixels, whereas the Pentax provides 12 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 Sony Alpha A7R III and the Pentax Q? 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
An illustration of the physical size and weight of the Sony A7R III and the Pentax Q is provided 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 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 Pentax Q is considerably smaller (54 percent) than the Sony A7R III. Moreover, the Pentax Q is substantially lighter (72 percent) than the A7R III. It is worth mentioning in this context that the A7R III is splash and dust resistant, 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, so that it is not always necessary to take the battery charger along 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 (USD) |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Sony A7R III | 127 mm | 96 mm | 74 mm | 650 g | 650 | Y | Oct 2017 | 3,199 | ebay.com | |
2. | Pentax Q | 98 mm | 57 mm | 31 mm | 180 g | 230 | n | Jun 2011 | 649 | ebay.com | |
3. | Nikon Z7 | 134 mm | 101 mm | 67 mm | 675 g | 330 | Y | Aug 2018 | 3,399 | ebay.com | |
4. | Olympus E-620 | 130 mm | 94 mm | 60 mm | 521 g | 500 | n | Feb 2009 | 699 | ebay.com | |
5. | Olympus E-PL1 | 115 mm | 72 mm | 42 mm | 334 g | 290 | n | Feb 2010 | 599 | ebay.com | |
6. | Olympus E-PL2 | 114 mm | 72 mm | 42 mm | 362 g | 280 | n | Jan 2011 | 599 | ebay.com | |
7. | Olympus E-PL3 | 110 mm | 64 mm | 37 mm | 313 g | 300 | n | Jun 2011 | 599 | ebay.com | |
8. | Olympus XZ-2 | 113 mm | 65 mm | 48 mm | 346 g | 340 | n | Sep 2012 | 599 | ebay.com | |
9. | Sony A1 | 129 mm | 97 mm | 81 mm | 737 g | 530 | Y | Jan 2021 | 6,499 | amazon.com | |
10. | Sony A7 III | 127 mm | 96 mm | 74 mm | 650 g | 610 | Y | Feb 2018 | 1,999 | amazon.com | |
11. | Sony A7R II | 127 mm | 96 mm | 60 mm | 625 g | 290 | Y | Jun 2015 | 3,199 | ebay.com | |
12. | Sony A7R IIIA | 127 mm | 96 mm | 74 mm | 650 g | 650 | Y | Apr 2021 | 3,199 | amazon.com | |
13. | Sony A7R IV | 129 mm | 96 mm | 78 mm | 665 g | 670 | Y | Jul 2019 | 3,499 | ebay.com | |
14. | Sony A7R IVA | 129 mm | 96 mm | 78 mm | 665 g | 670 | Y | Apr 2021 | 3,499 | amazon.com | |
15. | Sony A7R V | 131 mm | 97 mm | 82 mm | 723 g | 530 | Y | Oct 2022 | 3,899 | amazon.com | |
16. | Sony A7S III | 127 mm | 97 mm | 81 mm | 699 g | 600 | Y | Jul 2020 | 3,499 | amazon.com | |
17. | Sony A9 | 127 mm | 96 mm | 63 mm | 673 g | 650 | Y | Apr 2017 | 4,499 | 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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. 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.
Sensor comparison
The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. 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 Sony A7R III features a full frame sensor and the Pentax Q a 1/2.3-inch sensor. The sensor area in the Pentax Q is 97 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 5.6. The sensor in the A7R III has a native 3:2 aspect ratio, while the one in the Pentax Q offers a 4:3 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 pixels. 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 inches or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inches or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inches or 67.3 x 44.9 cm. The corresponding values for the Pentax Q are 20 x 15 inches or 50.8 x 38.1 cm for good quality, 16 x 12 inches or 40.6 x 30.5 cm for very good quality, and 13.3 x 10 inches 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 Sony Alpha A7R III has a native sensitivity range from ISO 100 to ISO 32000, which can be extended to ISO 50-102400. The corresponding ISO settings for the Pentax Q are ISO 125 to ISO 6400 (no boost).
In terms of underlying technology, the A7R III is build around a BSI-CMOS sensor, while the Pentax Q uses a 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.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under review, the A7R III provides substantially higher image quality than the Pentax Q, with an overall score that is 53 points higher. This 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 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. | Sony A7R III | Full Frame | 42.2 | 7952 | 5304 | 4K/30p | 26.0 | 14.7 | 3523 | 100 | |
2. | Pentax Q | 1/2.3 | 12.0 | 4000 | 3000 | 1080/30p | 20.2 | 11.1 | 189 | 47 | |
3. | Nikon Z7 | Full Frame | 45.4 | 8256 | 5504 | 4K/30p | 26.3 | 14.6 | 2668 | 99 | |
4. | Olympus E-620 | Four Thirds | 12.2 | 4032 | 3024 | none | 21.3 | 10.3 | 536 | 55 | |
5. | Olympus E-PL1 | Four Thirds | 12.2 | 4032 | 3024 | 720/30p | 21.5 | 10.1 | 487 | 54 | |
6. | Olympus E-PL2 | Four Thirds | 12.2 | 4032 | 3024 | 720/30p | 21.4 | 10.2 | 573 | 55 | |
7. | Olympus E-PL3 | Four Thirds | 12.2 | 4032 | 3024 | 1080/60i | 20.9 | 10.3 | 499 | 52 | |
8. | Olympus XZ-2 | 1/1.7 | 11.8 | 3968 | 2976 | 1080/30p | 20.4 | 11.3 | 216 | 49 | |
9. | Sony A1 | Full Frame | 49.8 | 8640 | 5760 | 8k/30p | 25.9 | 14.5 | 3163 | 98 | |
10. | Sony A7 III | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3730 | 96 | |
11. | Sony A7R II | Full Frame | 42.2 | 7952 | 5304 | 4K/30p | 26.0 | 13.9 | 3434 | 98 | |
12. | Sony A7R IIIA | Full Frame | 42.2 | 7952 | 5304 | 4K/30p | 26.0 | 14.7 | 3523 | 100 | |
13. | Sony A7R IV | Full Frame | 60.2 | 9504 | 6336 | 4K/30p | 26.0 | 14.8 | 3344 | 99 | |
14. | Sony A7R IVA | Full Frame | 60.2 | 9504 | 6336 | 4K/30p | 26.0 | 14.8 | 3344 | 99 | |
15. | Sony A7R V | Full Frame | 60.2 | 9504 | 6336 | 8k/24p | 26.5 | 14.8 | 3187 | 100 | |
16. | Sony A7S III | Full Frame | 12.0 | 4240 | 2832 | 4K/120p | 23.7 | 13.9 | 2520 | 86 | |
17. | Sony A9 | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 24.9 | 13.3 | 3517 | 92 |
Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the A7R III provides a higher video resolution than the Pentax Q. It can shoot video footage at 4K/30p, while the Pentax is limited to 1080/30p.
Feature comparison
Apart from 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 Sony A7R III, the Pentax Q, and comparable 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. | Sony A7R III | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
2. | Pentax Q | optional | n | 3.0 / 460 | fixed | n | 1/2000s | 1.5/s | Y | Y | |
3. | Nikon Z7 | 3690 | Y | 3.2 / 2100 | tilting | Y | 1/8000s | 9.0/s | n | Y | |
4. | Olympus E-620 | optical | n | 2.7 / 230 | swivel | n | 1/4000s | 4.0/s | Y | Y | |
5. | Olympus E-PL1 | optional | n | 2.7 / 230 | fixed | n | 1/2000s | 3.0/s | Y | Y | |
6. | Olympus E-PL2 | optional | n | 3.0 / 460 | fixed | n | 1/4000s | 3.0/s | Y | Y | |
7. | Olympus E-PL3 | optional | n | 3.0 / 460 | tilting | n | 1/4000s | 5.5/s | n | Y | |
8. | Olympus XZ-2 | optional | n | 3.0 / 920 | tilting | Y | 1/2000s | 5.0/s | Y | Y | |
9. | Sony A1 | 9437 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
10. | Sony A7 III | 2359 | n | 3.0 / 922 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
11. | Sony A7R II | 2400 | n | 3.0 / 1229 | tilting | n | 1/8000s | 5.0/s | n | Y | |
12. | Sony A7R IIIA | 3686 | n | 3.0 / 2340 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
13. | Sony A7R IV | 5760 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
14. | Sony A7R IVA | 5760 | n | 3.0 / 2340 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
15. | Sony A7R V | 9440 | n | 3.2 / 2100 | full-flex | Y | 1/8000s | 10.0/s | n | Y | |
16. | Sony A7S III | 9440 | n | 3.0 / 1440 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
17. | Sony A9 | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 20.0/s | n | Y | |
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. |
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The A7R III has a touchscreen, while the Pentax Q has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.
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 Sony A7R III and the Pentax Q 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 A7R III writes its imaging data to SDXC or Memory Stick PRO Duo cards, while the Pentax Q uses SDXC 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
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 Sony Alpha A7R III and Pentax Q 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. | Sony A7R III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
2. | Pentax Q | Y | mono / mono | - | - | mini | 2.0 | - | - | - | |
3. | Nikon Z7 | Y | stereo / mono | Y | Y | micro | 3.1 | Y | - | Y | |
4. | Olympus E-620 | Y | - / - | - | - | - | 2.0 | - | - | - | |
5. | Olympus E-PL1 | Y | stereo / - | - | - | mini | 2.0 | - | - | - | |
6. | Olympus E-PL2 | Y | stereo / - | - | - | mini | 2.0 | - | - | - | |
7. | Olympus E-PL3 | Y | stereo / - | - | - | mini | 2.0 | - | - | - | |
8. | Olympus XZ-2 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
9. | Sony A1 | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
10. | Sony A7 III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
11. | Sony A7R II | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
12. | Sony A7R IIIA | Y | stereo / mono | Y | Y | micro | 3.2 | Y | Y | Y | |
13. | Sony A7R IV | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
14. | Sony A7R IVA | Y | stereo / mono | Y | Y | micro | 3.2 | Y | Y | Y | |
15. | Sony A7R V | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
16. | Sony A7S III | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
17. | Sony A9 | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | Y |
It is notable that the A7R III has a microphone port, which is missing on the Pentax Q. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.
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.
Both the A7R III and the Pentax Q have been discontinued, but can regularly be found used on ebay. The Pentax Q was replaced by the Pentax Q10, while the A7R III was followed by the Sony A7R IV. Further information on the features and operation of the A7R III and Pentax Q can be found, respectively, in the Sony A7R III Manual (free pdf) or the online Pentax Q Manual.
Review summary
So what is the bottom line? Is there a clear favorite between the Sony A7R III and the Pentax Q? Which camera is better? The listing below highlights the relative strengths of the two models.
Arguments in favor of the Sony Alpha A7R III:
- More detail: Offers more megapixels (42.2 vs 12MP) with a 91% higher linear resolution.
- 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 assessment.
- Richer colors: Generates images with noticeably better colors (5.8 bits more color depth).
- More dynamic range: Captures a larger spectrum of light and dark details (3.6 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (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 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 composition 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: Is equipped with a touch-sensitive rear screen to facilitate handling.
- 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: Can take more shots (650 versus 230) on a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- 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.
Reasons to prefer 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 will fit more readily into a bag.
- Less heavy: Has a lower weight (by 470g or 72 percent) and is thus easier to take along.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced into a lower priced category (80 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in June 2011).
If the count of individual advantages (bullet points above) is taken as a guide, the A7R III is the clear winner of the match-up (29 : 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 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 Sony A7R III and the Pentax Q 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 the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the A7R III or the Pentax Q perform in practice. 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 where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular 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 (USD) |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Sony A7R III | .. | + + | 4/5 | 90/100 | 4.5/5 | 5/5 | Oct 2017 | 3,199 | ebay.com | |
2. | Pentax Q | 3/5 | .. | .. | .. | 4/5 | 3.5/5 | Jun 2011 | 649 | ebay.com | |
3. | Nikon Z7 | 5/5 | + | 4.8/5 | 89/100 | 4.5/5 | 5/5 | Aug 2018 | 3,399 | ebay.com | |
4. | Olympus E-620 | 3/5 | 88/100 | .. | 72/100 | 4.5/5 | 5/5 | Feb 2009 | 699 | ebay.com | |
5. | Olympus E-PL1 | .. | 86/100 | .. | 69/100 | 4/5 | 4.5/5 | Feb 2010 | 599 | ebay.com | |
6. | Olympus E-PL2 | 3/5 | 83/100 | .. | 71/100 | 4.5/5 | 4.5/5 | Jan 2011 | 599 | ebay.com | |
7. | Olympus E-PL3 | 3/5 | + + | .. | 72/100 | 4.5/5 | 4/5 | Jun 2011 | 599 | ebay.com | |
8. | Olympus XZ-2 | 4/5 | + | .. | .. | 4.5/5 | 4.5/5 | Sep 2012 | 599 | ebay.com | |
9. | Sony A1 | 5/5 | o | 4.5/5 | 93/100 | 4.5/5 | 5/5 | Jan 2021 | 6,499 | amazon.com | |
10. | Sony A7 III | .. | + + | 4.5/5 | 89/100 | 5/5 | 5/5 | Feb 2018 | 1,999 | amazon.com | |
11. | Sony A7R II | 5/5 | + + | 5/5 | 90/100 | 5/5 | 5/5 | Jun 2015 | 3,199 | ebay.com | |
12. | Sony A7R IIIA | .. | + + | 4/5 | 90/100 | 4.5/5 | 5/5 | Apr 2021 | 3,199 | amazon.com | |
13. | Sony A7R IV | 5/5 | + | 4.5/5 | 91/100 | 4.5/5 | 5/5 | Jul 2019 | 3,499 | ebay.com | |
14. | Sony A7R IVA | 5/5 | + | 4.5/5 | 91/100 | 4.5/5 | 5/5 | Apr 2021 | 3,499 | amazon.com | |
15. | Sony A7R V | 5/5 | + + | 4.5/5 | 92/100 | .. | .. | Oct 2022 | 3,899 | amazon.com | |
16. | Sony A7S III | 4.5/5 | + + | 5/5 | 91/100 | 4.5/5 | 5/5 | Jul 2020 | 3,499 | amazon.com | |
17. | Sony A9 | 5/5 | + + | 4.8/5 | 89/100 | 5/5 | 5/5 | Apr 2017 | 4,499 | ebay.com | |
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. |
The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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. Also, please note that some of the review sites have changed their methodology and reporting over time.
Other camera comparisons
Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Contax N Digital vs Pentax Q
- Fujifilm X-T200 vs Sony A7R III
- Fujifilm X20 vs Sony A7R III
- Nikon D5000 vs Sony A7R III
- Nikon D7500 vs Pentax Q
- Olympus E-M10 III vs Pentax Q
- Olympus E-PL5 vs Sony A7R III
- Pentax Q vs Sony A6400
- Pentax Q vs Sony HX90V
- Pentax Q vs Sony RX100 VI
- Sony A7R III vs Sony A9
- Sony A7R III vs Sony A9 II
Specifications: Sony A7R III vs Pentax Q
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 | Sony A7R III | Pentax Q |
---|---|---|
Camera Type | Mirrorless system camera | Mirrorless system camera |
Camera Lens | Sony E mount lenses | Pentax Q mount lenses |
Launch Date | October 2017 | June 2011 |
Launch Price | USD 3,199 | USD 649 |
Sensor Specs | Sony A7R III | Pentax Q |
Sensor Technology | BSI-CMOS | CMOS |
Sensor Format | Full Frame Sensor | 1/2.3" Sensor |
Sensor Size | 35.9 x 24.0 mm | 6.17 x 4.55 mm |
Sensor Area | 861.6 mm2 | 28.0735 mm2 |
Sensor Diagonal | 43.2 mm | 7.7 mm |
Crop Factor | 1.0x | 5.6x |
Sensor Resolution | 42.2 Megapixels | 12 Megapixels |
Image Resolution | 7952 x 5304 pixels | 4000 x 3000 pixels |
Pixel Pitch | 4.52 μm | 1.53 μm |
Pixel Density | 4.90 MP/cm2 | 42.74 MP/cm2 |
Moiré control | no AA filter | Anti-Alias filter |
Movie Capability | 4K/30p Video | 1080/30p Video |
ISO Setting | 100 - 32,000 ISO | 125 - 6,400 ISO |
ISO Boost | 50 - 102,400 ISO | no Enhancement |
DXO Sensor Quality (score) | 100 | 47 |
DXO Color Depth (bits) | 26.0 | 20.2 |
DXO Dynamic Range (EV) | 14.7 | 11.1 |
DXO Low Light (ISO) | 3523 | 189 |
Screen Specs | Sony A7R III | Pentax Q |
Viewfinder Type | Electronic viewfinder | Viewfinder optional |
Viewfinder Field of View | 100% | |
Viewfinder Magnification | 0.78x | |
Viewfinder Resolution | 3686k dots | |
LCD Framing | Live View | Live View |
Rear LCD Size | 3.0inch | 3.0inch |
LCD Resolution | 1440k dots | 460k dots |
LCD Attachment | Tilting screen | Fixed screen |
Touch Input | Touchscreen | no Touchscreen |
Shooting Specs | Sony A7R III | Pentax Q |
Focus System | On-Sensor Phase-detect | Contrast-detect AF |
Manual Focusing Aid | Focus Peaking | no Peaking Feature |
Continuous Shooting | 10 shutter flaps/s | 1.5 shutter flaps/s |
Electronic Shutter | YES | no E-Shutter |
Time-Lapse Photography | Intervalometer built-in | Intervalometer built-in |
Image Stabilization | In-body stabilization | In-body stabilization |
Fill Flash | no On-Board Flash | Built-in Flash |
Storage Medium | MS or SDXC cards | SDXC cards |
Single or Dual Card Slots | Dual card slots | Single card slot |
UHS card support | Single UHS-II | no |
Connectivity Specs | Sony A7R III | Pentax Q |
External Flash | Hotshoe | Hotshoe |
Studio Flash | PC Sync socket | no PC Sync |
USB Connector | USB 3.1 | USB 2.0 |
HDMI Port | micro HDMI | mini HDMI |
Microphone Port | External MIC port | no MIC socket |
Headphone Socket | Headphone port | no Headphone port |
Wifi Support | Wifi built-in | no Wifi |
Near-Field Communication | NFC built-in | no NFC |
Bluetooth Support | Bluetooth built-in | no Bluetooth |
Body Specs | Sony A7R III | Pentax Q |
Environmental Sealing | Weathersealed body | not weather sealed |
Battery Type | Sony NP-FZ100 | Pentax D-LI68 |
Battery Life (CIPA) | 650 shots per charge | 230 shots per charge |
In-Camera Charging | USB charging | no USB charging |
Body Dimensions |
127 x 96 x 74 mm (5.0 x 3.8 x 2.9 in) |
98 x 57 x 31 mm (3.9 x 2.2 x 1.2 in) |
Camera Weight | 650 g (22.9 oz) | 180 g (6.3 oz) |
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