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Pentax Q vs Sony A7R IV

The Pentax Q and the Sony Alpha A7R IV are two digital cameras that were officially introduced, respectively, in June 2011 and July 2019. Both the Pentax Q and the A7R IV are mirrorless interchangeable lens cameras that are based on a 1/2.3-inch (Pentax Q) and a full frame (A7R IV) sensor. The Pentax has a resolution of 12 megapixels, whereas the Sony provides 60.2 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Pentax Q   Sony A7R IV
Pentax Q Sony A7R IV
Mirrorless system camera Mirrorless system camera
Pentax Q mount lenses Sony E mount lenses
12 MP, 1/2.3" Sensor 60.2 MP, Full Frame Sensor
1080/30p Video 4K/30p Video
ISO 125-6400 ISO 100-32000 (50-102400)
Viewfinder optional Electronic viewfinder (5760k 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 stabilizationIn-body stabilization
Not weather sealedWeathersealed body
230 shots per battery charge670 shots per battery charge
98 x 57 x 31 mm, 180 g 129 x 96 x 78 mm, 665 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax Q and the Sony Alpha A7R IV? 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 Pentax Q and the Sony A7R IV 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 IV is only available in black.

Size Pentax Q vs Sony A7R IV
Compare Pentax Q versus A7R IV top
Comparison Pentax Q or A7R IV rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7R IV is considerably larger (122 percent) than the Pentax Q. Moreover, the A7R IV is substantially heavier (269 percent) than the Pentax Q. It is noteworthy in this context that the A7R IV 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 IV 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, 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.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Pentax Q» 3.9 in 2.2 in 1.2 in 6.3 oz 230 n Jun 2011 649- i Pentax Q
 
Sony A7R IV« 5.1 in 3.8 in 3.1 in 23.5 oz 670 Y Jul 2019 3,499 i i Sony A7R IV
 
Fujifilm X10« » 4.6 in 2.8 in 2.2 in 12.3 oz 270 n Sep 2011 599- i Fujifilm X10
 
Olympus XZ-2« » 4.4 in 2.6 in 1.9 in 12.2 oz 340 n Sep 2012 599- i Olympus XZ-2
 
Olympus E-P3« » 4.8 in 2.7 in 1.3 in 13.0 oz 330 n Jun 2011 799- i Olympus E-P3
 
Olympus E-PL2« » 4.5 in 2.8 in 1.7 in 12.8 oz 280 n Jan 2011 599- i Olympus E-PL2
 
Olympus E-PL3« » 4.3 in 2.5 in 1.5 in 11.0 oz 300 n Jun 2011 599- i Olympus E-PL3
 
Olympus E-PL1« » 4.5 in 2.8 in 1.7 in 11.8 oz 290 n Feb 2010 599- i Olympus E-PL1
 
Olympus E-620« » 5.1 in 3.7 in 2.4 in 18.4 oz 500 n Feb 2009 699- i Olympus E-620
 
Panasonic GF3« » 4.3 in 2.6 in 1.3 in 9.3 oz 300 n Jun 2011 549- i Panasonic GF3
 
Panasonic G2« » 4.9 in 3.3 in 2.9 in 15.1 oz 360 n Mar 2010 599- i Panasonic G2
 
Panasonic GF2« » 4.4 in 2.7 in 1.3 in 10.9 oz 300 n Nov 2010 549- i Panasonic GF2
 
Sony A7 III« » 5.0 in 3.8 in 2.9 in 22.9 oz 610 Y Feb 2018 1,999 i i Sony A7 III
 
Sony A7R III« » 5.0 in 3.8 in 2.9 in 22.9 oz 650 Y Oct 2017 3,199- i Sony A7R III
 
Sony A7R II« » 5.0 in 3.8 in 2.4 in 22.0 oz 290 Y Jun 2015 3,199- i Sony A7R II
 
Sony A7S II« » 5.0 in 3.8 in 2.4 in 22.1 oz 370 Y Sep 2015 2,999 i i Sony A7S II
 
Sony A7 II« » 5.0 in 3.8 in 2.4 in 21.1 oz 350 Y Nov 2014 1,999- i Sony A7 II
Note: Measurements and pricing do not include easily detachable parts, such as 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 Pentax Q was launched at a markedly lower price (by 81 percent) than the A7R IV, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.

 

Sensor comparison

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will 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 Q features a 1/2.3-inch sensor and the Sony A7R IV a full frame sensor. The sensor area in the A7R IV is 2936 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 IV offers a 3:2 aspect.

Pentax Q and Sony A7R IV sensor measures

With 60.2MP, the A7R IV offers a higher resolution than the Pentax Q (12MP), but the A7R IV nevertheless has larger individual pixels (pixel pitch of 3.76μm versus 1.53μm for the Pentax Q) due to its larger sensor. Moreover, the A7R IV is a much more recent model (by 8 years) 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 IV has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A7R IV implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R IV for good quality output (200 dots per inch) amounts to 47.5 x 31.7 inch or 120.7 x 80.5 cm, for very good quality (250 dpi) 38 x 25.3 inch or 96.6 x 64.4 cm, and for excellent quality (300 dpi) 31.7 x 21.1 inch or 80.5 x 53.6 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 IV 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 IV has the capacity to capture high quality composite images (241MP) 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 IV are ISO 100 to ISO 32000, with the possibility to increase the ISO range to 50-102400.

Pentax Q versus A7R IV MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Pentax Q» 1/2.3 12.0 4000 30001080/30p20.211.118947Pentax Q
 
Sony A7R IV« Full Frame 60.2 9504 63364K/30p----Sony A7R IV
 
Fujifilm X10« » 2/3 12.0 4000 30001080/30p20.511.324550Fujifilm X10
 
Olympus XZ-2« » 1/1.7 11.8 3968 29761080/30p20.411.321649Olympus XZ-2
 
Olympus E-P3« » Four Thirds 12.2 4032 30241080/60i20.810.153651Olympus E-P3
 
Olympus E-PL2« » Four Thirds 12.2 4032 3024720/30p21.410.257355Olympus E-PL2
 
Olympus E-PL3« » Four Thirds 12.2 4032 30241080/60i20.910.349952Olympus E-PL3
 
Olympus E-PL1« » Four Thirds 12.2 4032 3024720/30p21.510.148754Olympus E-PL1
 
Olympus E-620« » Four Thirds 12.2 4032 3024-21.310.353655Olympus E-620
 
Panasonic GF3« » Four Thirds 12.0 4000 30001080/60i20.610.045849Panasonic GF3
 
Panasonic G2« » Four Thirds 12.0 4000 3000720/30p21.210.349353Panasonic G2
 
Panasonic GF2« » Four Thirds 12.0 4000 30001080/60i21.210.350654Panasonic GF2
 
Sony A7 III« » Full Frame 24.0 6000 40004K/30p25.014.7373096Sony A7 III
 
Sony A7R III« » Full Frame 42.2 7952 53044K/30p26.014.73523100Sony A7R III
 
Sony A7R II« » Full Frame 42.2 7952 53044K/30p26.013.9343498Sony A7R II
 
Sony A7S II« » Full Frame 12.0 4240 28324K/30p23.613.3299385Sony A7S II
 
Sony A7 II« » Full Frame 24.0 6000 40001080/60p24.913.6244990Sony A7 II

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, but the A7R IV 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

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A7R IV has an electronic viewfinder (5760k 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 adjacent table lists some of the other core features of the Pentax Q and Sony A7R IV along with similar information for a selection of comparators.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Pentax Q»- n 3.0 460 fixed n 1/2000s 1.5 Y Y Pentax Q
 
Sony A7R IV«5760 n 3.0 1440 tilting Y 1/8000s 10.0 n Y Sony A7R IV
 
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 A7R III« »3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y Sony A7R III
 
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
 
Sony A7 II« »2400 n 3.0 1230 tilting n 1/8000s 5.0 n Y Sony A7 II

One difference between the cameras concerns the presence of an on-board flash. The Pentax Q has one, while the A7R IV 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 IV 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 IV 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.

Concerning the storage of imaging data, both the Pentax Q and the A7R IV write their files to SDXC cards. The A7R IV 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 IV supports UHS-II cards (on both slots), 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 Pentax Q and Sony Alpha A7R IV and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Pentax Q»Ymonomono--mini2.0---Pentax Q
 
Sony A7R IV«YstereomonoYYmicro3.1YYYSony A7R IV
 
Fujifilm X10« »Ystereomono--mini2.0---Fujifilm X10
 
Olympus XZ-2« »Ystereomono--mini2.0---Olympus XZ-2
 
Olympus E-P3« »Ystereo---mini2.0---Olympus E-P3
 
Olympus E-PL2« »Ystereo---mini2.0---Olympus E-PL2
 
Olympus E-PL3« »Ystereo---mini2.0---Olympus E-PL3
 
Olympus E-PL1« »Ystereo---mini2.0---Olympus E-PL1
 
Olympus E-620« »Y-----2.0---Olympus E-620
 
Panasonic GF3« »-stereomono--mini2.0---Panasonic GF3
 
Panasonic G2« »Ystereomono--mini2.0---Panasonic G2
 
Panasonic GF2« »Ystereomono--mini2.0---Panasonic GF2
 
Sony A7 III« »YstereomonoYYmicro3.1YYYSony A7 III
 
Sony A7R III« »YstereomonoYYmicro3.1YYYSony A7R III
 
Sony A7R II« »YstereomonoYYmicro2.0YY-Sony A7R II
 
Sony A7S II« »YstereomonoYYmicro2.0YY-Sony A7S II
 
Sony A7 II« »YstereomonoYYmicro2.0YY-Sony A7 II

It is notable that the A7R IV 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 IV (unlike the Pentax Q) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The A7R IV 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

So what conclusions can be drawn? Is the Pentax Q better than the Sony A7R IV or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Advantages 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 129x96mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 485g or 73 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 (81 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in June 2011).

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Arguments in favor of the Sony Alpha A7R IV:

  • More detail: Has more megapixels (60.2 vs 12MP), which boosts linear resolution by 128%.
  • 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: Is equipped with a larger and more technologically advanced sensor.
  • Richer colors: The sensor size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
  • 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: 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 (670 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) SDXC cards on both slots.
  • More modern: Reflects 8 years of technical progress since the Pentax Q launch.

If the count of individual advantages (bullet points above) is taken as a guide, the A7R IV is the clear winner of the contest (28 : 6 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.

Pentax Q 06:28 A7R IV

How about other alternatives? Do the specifications of the Pentax Q and the Sony A7R IV 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the Pentax Q and the A7R IV 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 (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.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Pentax Q»--4/53.5/53.5/5 Jun 2011 649- i Pentax Q
 
Sony A7R IV«+---5/5 Jul 2019 3,499 i i Sony A7R IV
 
Fujifilm X10« »-76/1004/53.5/54.5/5 Sep 2011 599- i Fujifilm X10
 
Olympus XZ-2« »+-4.5/54/54.5/5 Sep 2012 599- i Olympus XZ-2
 
Olympus E-P3« »83/10074/1004.5/54.5/54.5/5 Jun 2011 799- i Olympus E-P3
 
Olympus E-PL2« »83/10071/1004.5/54.5/54.5/5 Jan 2011 599- i Olympus E-PL2
 
Olympus E-PL3« »+ +72/1004.5/5-4/5 Jun 2011 599- i Olympus E-PL3
 
Olympus E-PL1« »86/10069/1004/54.5/54.5/5 Feb 2010 599- i Olympus E-PL1
 
Olympus E-620« »88/10072/1004.5/5o5/5 Feb 2009 699- i Olympus E-620
 
Panasonic GF3« »82/10071/1004.5/54.5/54/5 Jun 2011 549- i Panasonic GF3
 
Panasonic G2« »-72/1004/54/54.5/5 Mar 2010 599- i Panasonic G2
 
Panasonic GF2« »82/10070/1004.5/54.5/54.5/5 Nov 2010 549- i Panasonic GF2
 
Sony A7 III« »+ +89/1005/55/55/5 Feb 2018 1,999 i i Sony A7 III
 
Sony A7R III« »+ +90/1004.5/55/55/5 Oct 2017 3,199- i Sony A7R III
 
Sony A7R II« »+ +90/1005/54.5/55/5 Jun 2015 3,199- i Sony A7R II
 
Sony A7S II« »+-4.5/55/55/5 Sep 2015 2,999 i i Sony A7S II
 
Sony A7 II« »+82/1004.5/55/55/5 Nov 2014 1,999- i Sony A7 II
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Pentax Q:
Check Ebay offers
Sony A7R IV:
Check Amazon price

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. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Pentax Q vs Sony A7R IV

    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 Specifications
    Camera Model Pentax Q Sony A7R IV
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Pentax Q mount lenses Sony E mount lenses
    Launch Date June 2011 July 2019
    Launch Price USD 649 USD 3499
    Sensor Specs Pentax Q Sony A7R IV
    Sensor Technology CMOS BSI-CMOS
    Sensor Format 1/2.3" Sensor Full Frame Sensor
    Sensor Size 6.17 x 4.55 mm 35.7 x 23.8 mm
    Sensor Area 28.0735 mm2 849.66 mm2
    Sensor Diagonal 7.7 mm 42.9 mm
    Crop Factor 5.6x 1.0x
    Sensor Resolution 12 Megapixels 60.2 Megapixels
    Image Resolution 4000 x 3000 pixels 9504 x 6336 pixels
    Pixel Pitch 1.53 μm 3.76 μm
    Pixel Density 42.74 MP/cm2 7.09 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 ..
    DXO Color Depth (bits) 20.2 ..
    DXO Dynamic Range (EV) 11.1 ..
    DXO Low Light (ISO) 189 ..
    Screen Specs Pentax Q Sony A7R IV
    Viewfinder Type Viewfinder optional Electronic viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.78x
    Viewfinder Resolution 5760k 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 IV
    Autofocus System Contrast-detect AF On-Sensor Phase-detect
    Manual Focusing AidNo Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/2000/s 1/8000/s
    Continuous Shooting 1.5 shutter flaps/s 10 shutter flaps/s
    Electronic Shutterno E-ShutterYES
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash Build-in Flash no On-Board Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Single card slot Dual card slots
    UHS card support no Dual UHS-II
    Connectivity Specs Pentax Q Sony A7R IV
    External Flash Hotshoe Hotshoe
    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 IV
    Environmental SealingNot weather sealedWeathersealed body
    Battery Type D-LI68 NP-FZ100
    Battery Life (CIPA)230 shots per charge670 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 98 x 57 x 31 mm
    (3.9 x 2.2 x 1.2 in)
    129 x 96 x 78 mm
    (5.1 x 3.8 x 3.1 in)
    Camera Weight 180 g (6.3 oz) 665 g (23.5 oz)

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