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Canon R6 vs Pentax 645D

The Canon EOS R6 and the Pentax 645D are two digital cameras that were officially introduced, respectively, in July 2020 and March 2010. The Canon R6 is a mirrorless interchangeable lens camera, while the 645D is a DSLR. The cameras are based on a full frame (Canon R6) and a medium format (645D) sensor. The Canon has a resolution of 20 megapixels, whereas the Pentax provides 39.5 MP.

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

Headline Specifications
Canon R6 versus Pentax 645D
Canon R6 Pentax 645D
Mirrorless system camera Digital single lens reflex
Canon RF mount lenses Pentax 645 mount lenses
20 MP, Full Frame Sensor 39.5 MP, Medium Format Sensor
4k/60p Video no Video
ISO 100-102,400 (50 - 204,800) ISO 100-1,600
Electronic viewfinder (5760k dots) Optical viewfinder
3.0 LCD, 1620k dots 3.0 LCD, 921k dots
Swivel touchscreen Fixed screen (not touch-sensitive)
12 shutter flaps per second 1.1 shutter flaps per second
In-body stabilizationLens stabilization only
Weathersealed bodyWeathersealed body
360 shots per battery charge800 shots per battery charge
138 x 98 x 88 mm, 680 g 156 x 117 x 119 mm, 1480 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS R6 and the Pentax 645D? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison

The physical size and weight of the Canon R6 and the Pentax 645D are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All size dimensions are rounded to the nearest millimeter.

Size Canon R6 vs Pentax 645D
Compare Canon R6 versus 645D top
Comparison Canon R6 or 645D rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax 645D is notably larger (35 percent) than the Canon R6. Moreover, the 645D is substantially heavier (118 percent) than the Canon R6. 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 Canon R6 gets 360 shots out of its LP-E6NH battery, while the 645D can take 800 images on a single charge of its D-LI90 power pack. The power pack in the Canon R6 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.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon R6 138 mm 98 mm 88 mm 680 g 360 Y Jul 2020 2,499 i
2.
 
Pentax 645D 156 mm 117 mm 119 mm 1480 g 800 Y Mar 2010 9,995i
3.
 
Canon R5 138 mm 98 mm 88 mm 738 g 320 Y Jul 2020 3,899 i
4.
 
Canon R 139 mm 98 mm 84 mm 660 g 370 Y Sep 2018 2,299 i
5.
 
Canon 6D 145 mm 111 mm 71 mm 770 g 1090 Y Sep 2012 2,099i
6.
 
Canon 1D X 158 mm 168 mm 83 mm 1551 g 1120 Y Oct 2011 6,799i
7.
 
Canon 1D Mark IV 156 mm 157 mm 80 mm 1230 g 1500 Y Oct 2009 4,999i
8.
 
Leica S Typ 006 160 mm 120 mm 80 mm 1260 g .. Y Sep 2012 21,950i
9.
 
Nikon D3S 160 mm 157 mm 88 mm 1240 g 4200 Y Oct 2009 5,199i
10.
 
Olympus E-M1 III 134 mm 91 mm 69 mm 580 g 420 Y Feb 2020 1,799 i
11.
 
Olympus E-M1X 144 mm 147 mm 75 mm 997 g 870 Y Jan 2019 2,999 i
12.
 
Panasonic S1 149 mm 110 mm 97 mm 1017 g 400 Y Feb 2019 2,499 i
13.
 
Panasonic G90 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999 i
14.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 8,499 i
15.
 
Sony A9 II 129 mm 96 mm 76 mm 678 g 690 Y Oct 2019 4,499 i
16.
 
Sony A6600 120 mm 67 mm 69 mm 503 g 810 Y Aug 2019 1,399 i
17.
 
Sony A99 147 mm 111 mm 78 mm 812 g 500 Y Sep 2012 2,799i
Notes: 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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The Canon R6 was launched at a markedly lower price (by 75 percent) than the 645D, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

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Sensor comparison

The size of the imaging sensor is a crucial determinant 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 Canon R6 features a full frame sensor and the Pentax 645D a medium format sensor. The sensor area in the 645D is 68 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 0.79. The sensor in the Canon R6 has a native 3:2 aspect ratio, while the one in the 645D offers a 4:3 aspect.

Canon R6 and Pentax 645D sensor measures

With 39.5MP, the 645D offers a higher resolution than the Canon R6 (20MP), but the 645D has smaller individual pixels (pixel pitch of 6.06μm versus 6.57μm for the Canon R6). Yet, the Canon R6 is a much more recent model (by 10 years and 4 months) than the 645D, 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 645D has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax 645D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 645D for good quality output (200 dots per inch) amounts to 36.3 x 27.2 inches or 92.3 x 69.1 cm, for very good quality (250 dpi) 29.1 x 21.8 inches or 73.8 x 55.3 cm, and for excellent quality (300 dpi) 24.2 x 18.1 inches or 61.5 x 46.1 cm. The corresponding values for the Canon R6 are 27.4 x 18.2 inches or 69.5 x 46.3 cm for good quality, 21.9 x 14.6 inches or 55.6 x 37.1 cm for very good quality, and 18.2 x 12.2 inches or 46.3 x 30.9 cm for excellent quality prints.

The Canon R6 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Canon EOS R6 has a native sensitivity range from ISO 100 to ISO 102400, which can be extended to ISO 50-204800. The corresponding ISO settings for the Pentax 645D are ISO 100 to ISO 1600 (no boost).

Canon R6 versus 645D MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under review, the Canon R6 has a notably higher overall DXO score than the 645D (overall score 8 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.4 bits lower color depth, 1.7 EV in additional dynamic range, and 1.4 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.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon R6 Full Frame 20.0 5472 36484k/60p24.214.3339490
2.
 
Pentax 645D Medium Format 39.5 7264 5440none24.612.6126282
3.
 
Canon R5 Full Frame 44.8 8192 54648k/30p25.314.6304295
4.
 
Canon R Full Frame 30.1 6720 44804K/30p24.513.5274289
5.
 
Canon 6D Full Frame 20.0 5472 36481080/30p23.812.1234082
6.
 
Canon 1D X Full Frame 17.9 5184 34561080/30p23.811.8278682
7.
 
Canon 1D Mark IV APS-H 16.0 4896 32641080/30p22.812.0132074
8.
 
Leica S Typ 006 Medium Format 37.5 7500 5000none23.912.282476
9.
 
Nikon D3S Full Frame 12.1 4256 2832720/24p23.512.0325382
10.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p........
11.
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p........
12.
 
Panasonic S1 Full Frame 24.0 6000 40004K/60p25.214.5333395
13.
 
Panasonic G90 Four Thirds 20.2 5184 38884K/30p........
14.
 
Pentax 645Z Medium Format 51.1 8256 61921080/60i26.014.74505101
15.
 
Sony A9 II Full Frame 24.0 6000 40004K/30p25.014.0343493
16.
 
Sony A6600 APS-C 24.0 6000 40004K/30p23.813.4149782
17.
 
Sony A99 Full Frame 24.0 6000 40001080/60p25.014.0155589

Many modern cameras cannot only take still pictures, but also record videos. The Canon R6 indeed provides movie recording capabilities, while the 645D does not. The highest resolution format that the Canon R6 can use is 4k/60p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the Canon R6 has an electronic viewfinder (5760k dots), while the 645D 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 viewfinder in the Canon R6 offers a wider field of view (100%) than the one in the 645D (98%), so that a larger proportion of the captured image is visible in the finder. On the other hand, the viewfinder of the 645D has a higher magnification (0.78x vs 0.76x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Canon R6 and Pentax 645D in connection with corresponding information for a sample of similar cameras.

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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
1.
 
Canon R65760 n 3.0 1620 swivel Y 1/8000s 12.0 n Y
2.
 
Pentax 645Doptical Y 3.0 921 fixed n 1/4000s 1.1 n n
3.
 
Canon R55760 Y 3.2 2100 swivel Y 1/8000s 10.0 n Y
4.
 
Canon R3690 Y 3.2 2100 swivel Y 1/8000s 8.0 n n
5.
 
Canon 6Doptical Y 3.0 1040 fixed n 1/4000s 4.5 n n
6.
 
Canon 1D Xoptical Y 3.2 1040 fixed n 1/8000s 14.0 n n
7.
 
Canon 1D Mark IVoptical Y 3.0 920 fixed n 1/8000s 10.0 n n
8.
 
Leica S Typ 006optical Y 3.0 922 fixed n 1/4000s 1.5 n n
9.
 
Nikon D3Soptical Y 3.0 921 fixed n 1/8000s 11.0 n n
10.
 
Olympus E-M1 III2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
11.
 
Olympus E-M1X2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
12.
 
Panasonic S15760 Y 3.2 2100 full-flex Y 1/8000s 9.0 n Y
13.
 
Panasonic G902360 n 3.0 1240 swivel Y 1/4000s 9.0 Y Y
14.
 
Pentax 645Zoptical Y 3.2 1037 tilting n 1/4000s 3.0 n n
15.
 
Sony A9 II3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y
16.
 
Sony A66002359 n 3.0 922 tilting Y 1/4000s 11.0 n Y
17.
 
Sony A992359 Y 3.0 1229 full-flex n 1/8000s 6.0 n Y

One feature that differentiates the Canon R6 and the 645D is in-body image stabilization (IBIS). The Canon R6 reduces the risk of handshake-induced blur with all attached lenses, while the 645D offers no blur reduction with lenses that themselves do not provide optical image stabilization.

The Canon R6 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the 645D 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 Canon R6 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 Canon R6 and the Pentax 645D 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 Canon R6 and the 645D write their files to SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. The Canon R6 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the 645D cannot take advantage of Ultra High Speed SD cards.

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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 Canon EOS R6 and Pentax 645D and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon R6YmonomonoYYmicro3.2Y-Y
2.
 
Pentax 645DYstereo----2.0---
3.
 
Canon R5YmonomonoYYmicro3.2Y-Y
4.
 
Canon RYstereomonoYYmini3.1Y-Y
5.
 
Canon 6DYmonomonoY-mini2.0Y--
6.
 
Canon 1D XYmono-Y-mini2.0---
7.
 
Canon 1D Mark IVYstereo-Y-mini2.0---
8.
 
Leica S Typ 006Y----mini2.0---
9.
 
Nikon D3SYstereo---mini2.0---
10.
 
Olympus E-M1 IIIYstereomonoYYmicro3.1Y-Y
11.
 
Olympus E-M1XYstereomonoYYmicro3.0Y-Y
12.
 
Panasonic S1YstereomonoYYfull3.1Y-Y
13.
 
Panasonic G90YstereomonoYYmicro2.0Y-Y
14.
 
Pentax 645ZYstereomonoY-mini3.0---
15.
 
Sony A9 IIYstereomonoYYmicro3.1YYY
16.
 
Sony A6600YstereomonoYYYES2.0YYY
17.
 
Sony A99YstereomonoYYmini2.0---

It is notable that the Canon R6 offers wifi support, while the 645D does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Studio photographers will appreciate that the Pentax 645D (unlike the Canon R6) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The Canon R6 is a recent model that features in the current product line-up of Canon. In contrast, the 645D has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the 645D was succeeded by the Pentax 645Z. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Pentax websites.

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Review summary

So how do things add up? Is the Canon R6 better than the Pentax 645D or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Reasons to prefer the Canon EOS R6:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better image quality: Scores markedly higher (8 points) in the DXO overall assessment.
  • More dynamic range: Captures a larger spectrum of light and dark details (1.7 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (1.4 stops ISO advantage).
  • Broader imaging potential: Can record not only still images but also 4k/60p movies.
  • 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 complete view: Has a viewfinder with a larger field of view (100% vs 98%).
  • More detailed LCD: Has a higher resolution rear screen (1620k vs 921k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (12 vs 1.1 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (138x98mm vs 156x117mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 800g or 54 percent) and hence easier to carry around.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Faster buffer clearing: Supports Ultra High Speed (UHS-II) SDXC cards.
  • More affordable: Was introduced into a lower priced category (75 percent cheaper at launch).
  • More modern: Reflects 10 years and 4 months of technical progress since the 645D launch.

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Advantages of the Pentax 645D:

  • More detail: Has more megapixels (39.5 vs 20MP), which boosts linear resolution by 38%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.76x).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Longer lasting: Gets more shots (800 versus 360) out of a single battery charge.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • More heavily discounted: Has been around for much longer (launched in March 2010).

If the number of relative strengths (bullet points above) is taken as a guide, the Canon R6 is the clear winner of the match-up (26 : 8 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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.

Canon R6 26:08 645D

How about other alternatives? Do the specifications of the Canon R6 and the Pentax 645D place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR Camera listings 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 Canon R6 or the 645D 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.

Expert reviews

This is why expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], 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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon R65/5+ +90/1004.5/55/5 Jul 2020 2,499 i
2.
 
Pentax 645D5/5........ Mar 2010 9,995i
3.
 
Canon R54.5/5..91/1004.5/54.5/5 Jul 2020 3,899 i
4.
 
Canon R4/5o79/1004.5/54/5 Sep 2018 2,299 i
5.
 
Canon 6D5/5+ +83/1004.5/54.5/5 Sep 2012 2,099i
6.
 
Canon 1D X5/5....4.5/54.5/5 Oct 2011 6,799i
7.
 
Canon 1D Mark IV5/5..89/100.... Oct 2009 4,999i
8.
 
Leica S Typ 006.......... Sep 2012 21,950i
9.
 
Nikon D3S5/5..89/1004.5/55/5 Oct 2009 5,199i
10.
 
Olympus E-M1 III5/5..83/1004.5/54/5 Feb 2020 1,799 i
11.
 
Olympus E-M1X4.5/5o..4.5/5.. Jan 2019 2,999 i
12.
 
Panasonic S14.5/5+ +88/1004.5/54/5 Feb 2019 2,499 i
13.
 
Panasonic G904.5/5+83/1004.5/54.5/5 Apr 2019 999 i
14.
 
Pentax 645Z5/5....4.5/55/5 Apr 2014 8,499 i
15.
 
Sony A9 II....90/1005/55/5 Oct 2019 4,499 i
16.
 
Sony A66004/5+83/1004.5/54/5 Aug 2019 1,399 i
17.
 
Sony A995/5..84/1004.5/54.5/5 Sep 2012 2,799i
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.

Canon R6:
Check Amazon price
Pentax 645D:
Check Ebay offers

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: Canon R6 vs Pentax 645D

    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 Canon R6 Pentax 645D
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Canon RF mount lenses Pentax 645 mount lenses
    Launch Date July 2020 March 2010
    Launch Price USD 2,499 USD 9,995
    Sensor Specs Canon R6 Pentax 645D
    Sensor Technology CMOS CCD
    Sensor Format Full Frame Sensor Medium Format Sensor
    Sensor Size 36.0 x 24.0 mm 44.0 x 33.0 mm
    Sensor Area 864 mm2 1452 mm2
    Sensor Diagonal 43.3 mm 55 mm
    Crop Factor 1.0x 0.79x
    Sensor Resolution 20 Megapixels 39.5 Megapixels
    Image Resolution 5472 x 3648 pixels 7264 x 5440 pixels
    Pixel Pitch 6.57 μm 6.06 μm
    Pixel Density 2.31 MP/cm2 2.72 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 4k/60p Video no Video
    ISO Setting 100 - 102,400 ISO 100 - 1,600 ISO
    ISO Boost 50 - 204,800 ISO no Enhancement
    Image Processor DIGIC X PRIME II
    DXO Sensor Quality (score) 90 82
    DXO Color Depth (bits) 24.2 24.6
    DXO Dynamic Range (EV) 14.3 12.6
    DXO Low Light (ISO) 3394 1262
    Screen Specs Canon R6 Pentax 645D
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 98%
    Viewfinder Magnification 0.76x 0.78x
    Viewfinder Resolution 5760k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1620k dots 921k dots
    LCD Attachment Swivel screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Canon R6 Pentax 645D
    Focus System On-Sensor Phase-detect Phase-detect AF
    Manual Focusing AidFocus Peakingno Peaking Feature
    Continuous Shooting 12 shutter flaps/s 1.1 shutter flaps/s
    Shutter Life Expectancy200 000 actuations50 000 actuations
    Electronic Shutterup to 1/8000sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Dual card slots Dual card slots
    UHS card support UHS-II no
    Connectivity Specs Canon R6 Pentax 645D
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 3.2 USB 2.0
    HDMI Port micro HDMI no HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in no Wifi
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Canon R6 Pentax 645D
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type LP-E6NH D-LI90
    Battery Life (CIPA)360 shots per charge800 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 138 x 98 x 88 mm
    (5.4 x 3.9 x 3.5 in)
    156 x 117 x 119 mm
    (6.1 x 4.6 x 4.7 in)
    Camera Weight 680 g (24.0 oz) 1480 g (52.2 oz)

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