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Pentax 645D vs Canon 750D

The Pentax 645D and the Canon EOS 750D (labelled Canon T6i in some countries) are two digital cameras that were officially introduced, respectively, in March 2010 and February 2015. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a medium format (645D) and an APS-C (750D) sensor. The Pentax has a resolution of 39.5 megapixels, whereas the Canon provides 24 MP.

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

Headline Specifications
Pentax 645D
versus
Canon 750D
Pentax 645D   Canon 750D
Digital single lens reflex Digital single lens reflex
Pentax 645 mount lenses Canon EF mount lenses
39.5 MP – Medium Format sensor 24 MP – APS-C sensor
no Video 1080/30p Video
ISO 100-1,600 ISO 100-12,800 (100 - 25,600)
Optical viewfinder Optical viewfinder
3.0" LCD – 921k dots 3.0" LCD – 1040k dots
Fixed screen (not touch-sensitive) Swivel touchscreen
1.1 shutter flaps per second 5 shutter flaps per second
Weathersealed bodynot weather sealed
800 shots per battery charge440 shots per battery charge
156 x 117 x 119 mm, 1480 g 132 x 101 x 78 mm, 555 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Pentax 645D and the Canon EOS 750D? 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.

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Body comparison

The physical size and weight of the Pentax 645D and the Canon 750D are illustrated 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 size dimensions are rounded to the nearest millimeter.

Size Pentax 645D vs Canon 750D
Compare 645D versus 750D top
Comparison 645D or 750D rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 750D is notably smaller (27 percent) than the Pentax 645D. Moreover, the 750D is substantially lighter (63 percent) than the 645D. It is worth mentioning in this context that the 645D is splash and dust resistant, while the 750D 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.

Concerning battery life, the 645D gets 800 shots out of its Pentax D-LI90 battery, while the 750D can take 440 images on a single charge of its Canon LP-E17 power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Pentax 645D 156 mm 117 mm 119 mm 1480 g 800 Y Mar 2010 US$ 9 995ebay.com
2.
 
Canon 750D 132 mm 101 mm 78 mm 555 g 440 n Feb 2015 US$ 749ebay.com
3.
 
Canon 1D Mark IV 156 mm 157 mm 80 mm 1230 g 1500 Y Oct 2009 US$ 4 999ebay.com
4.
 
Canon 1D X 158 mm 168 mm 83 mm 1551 g 1120 Y Oct 2011 US$ 6 799ebay.com
5.
 
Canon 1D X Mark II 158 mm 168 mm 83 mm 1530 g 1210 Y Feb 2016 US$ 5 999ebay.com
6.
 
Canon 77D 131 mm 100 mm 76 mm 540 g 600 n Feb 2017 US$ 899ebay.com
7.
 
Canon 700D 133 mm 100 mm 79 mm 580 g 440 n Mar 2013 US$ 649ebay.com
8.
 
Canon 760D 132 mm 101 mm 78 mm 565 g 440 n Feb 2015 US$ 649ebay.com
9.
 
Canon 800D 131 mm 100 mm 76 mm 532 g 600 n Feb 2017 US$ 749ebay.com
10.
 
Canon M3 111 mm 68 mm 44 mm 366 g 250 n Feb 2015 US$ 679ebay.com
11.
 
Leica S Typ 006 160 mm 120 mm 80 mm 1260 g .. Y Sep 2012 US$ 21 949ebay.com
12.
 
Nikon D3S 160 mm 157 mm 88 mm 1240 g 4200 Y Oct 2009 US$ 5 199ebay.com
13.
 
Nikon D5 160 mm 159 mm 92 mm 1415 g 3780 Y Jan 2016 US$ 6 499ebay.com
14.
 
Nikon D810 146 mm 123 mm 82 mm 980 g 1200 Y Jun 2014 US$ 3 299ebay.com
15.
 
Nikon D850 146 mm 124 mm 79 mm 1005 g 1840 Y Jul 2017 US$ 3 299 amazon.com
16.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 US$ 8 499ebay.com
17.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 US$ 2 299ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The 750D was launched at a markedly lower price (by 93 percent) than the 645D, 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 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Pentax 645D features a medium format sensor and the Canon 750D an APS-C sensor. The sensor area in the 750D is 77 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 0.79 and 1.6. The sensor in the 645D has a native 4:3 aspect ratio, while the one in the 750D offers a 3:2 aspect.

Pentax 645D and Canon 750D sensor measures

With 39.5MP, the 645D offers a higher resolution than the 750D (24MP), but the 645D nevertheless has larger individual pixels (pixel pitch of 6.06μm versus 3.72μm for the 750D) due to its larger sensor. However, the 750D is a much more recent model (by 4 years and 10 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 pixels. 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 750D are 30 x 20 inches or 76.2 x 50.8 cm for good quality, 24 x 16 inches or 61 x 40.6 cm for very good quality, and 20 x 13.3 inches or 50.8 x 33.9 cm for excellent quality prints.

The 750D has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Pentax 645D has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Canon EOS 750D are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 100-25600.

In terms of underlying technology, the 645D is build around a CCD sensor, while the 750D 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.

645D versus 750D MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 645D provides substantially higher image quality than the 750D, with an overall score that is 11 points higher. This advantage is based on 1.9 bits higher color depth, 0.6 EV in additional dynamic range, and 0.5 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.

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Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Pentax 645D Medium Format 39.5 7264 5440none24.612.6126282
2.
 
Canon 750D APS-C 24.0 6000 40001080/30p22.712.091971
3.
 
Canon 1D Mark IV APS-H 16.0 4896 32641080/30p22.812.0132074
4.
 
Canon 1D X Full Frame 17.9 5184 34561080/30p23.811.8278682
5.
 
Canon 1D X Mark II Full Frame 20.0 5472 36484K/60p24.113.5320788
6.
 
Canon 77D APS-C 24.0 6000 40001080/60p23.613.397178
7.
 
Canon 700D APS-C 17.9 5184 34561080/30p21.711.268161
8.
 
Canon 760D APS-C 24.0 6000 40001080/30p22.612.091570
9.
 
Canon 800D APS-C 24.0 6000 40001080/60p23.713.1158680
10.
 
Canon M3 APS-C 24.0 6000 40001080/30p22.811.8116972
11.
 
Leica S Typ 006 Medium Format 37.5 7500 5000none23.912.282476
12.
 
Nikon D3S Full Frame 12.1 4256 2832720/24p23.512.0325382
13.
 
Nikon D5 Full Frame 20.7 5588 37124K/30p25.112.3234388
14.
 
Nikon D810 Full Frame 36.2 7360 49121080/60p25.714.8285397
15.
 
Nikon D850 Full Frame 45.4 8256 55044K/30p26.414.82660100
16.
 
Pentax 645Z Medium Format 51.1 8256 61921080/60i26.014.74505101
17.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras cannot only take still pictures, but also record videos. The 750D indeed provides for movie recording, while the 645D does not. The highest resolution format that the 750D can use is 1080/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The 645D and the 750D are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinder in the 645D offers a wider field of view (98%) than the one in the 750D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the 645D has a higher magnification (0.78x vs 0.51x), 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 Pentax 645D and Canon 750D in connection with corresponding information for a sample of similar cameras.

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Core Features
  empty 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.
 
Pentax 645Doptical Y3.0 / 921 fixed n 1/4000s 1.1/s n n
2.
 
Canon 750Doptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
3.
 
Canon 1D Mark IVoptical Y3.0 / 920 fixed n 1/8000s 10.0/s n n
4.
 
Canon 1D Xoptical Y3.2 / 1040 fixed n 1/8000s 14.0/s n n
5.
 
Canon 1D X Mark IIoptical Y3.2 / 1620 fixed Y 1/8000s 16.0/s n n
6.
 
Canon 77Doptical Y3.0 / 1040 swivel Y 1/4000s 6.0/s Y n
7.
 
Canon 700Doptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
8.
 
Canon 760Doptical Y3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
9.
 
Canon 800Doptical n3.0 / 1040 swivel Y 1/4000s 6.0/s Y n
10.
 
Canon M3optional n3.0 / 1040 tilting Y 1/4000s 4.2/s Y n
11.
 
Leica S Typ 006optical Y3.0 / 922 fixed n 1/4000s 1.5/s n n
12.
 
Nikon D3Soptical Y3.0 / 921 fixed n 1/8000s 11.0/s n n
13.
 
Nikon D5optical Y3.2 / 2359 fixed Y 1/8000s 14.0/s n n
14.
 
Nikon D810optical Y3.2 / 1229 fixed n 1/8000s 5.0/s Y n
15.
 
Nikon D850optical Y3.2 / 2359 tilting Y 1/8000s 9.0/s n n
16.
 
Pentax 645Zoptical Y3.2 / 1037 tilting n 1/4000s 3.0/s n n
17.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0/s n n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the 645D, but is missing on the 750D is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The 750D has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the 645D does not have a selfie-screen.

The Pentax 645D has 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 645D and the 750D write their files to SDXC cards. The 645D features dual card slots, which can be very useful in case a memory card fails. In contrast, the 750D only has one slot. The 750D supports UHS-I cards (Ultra High Speed data transfer of up to 104 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 Pentax 645D and Canon EOS 750D and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Pentax 645DYstereo / ----2.0---
2.
 
Canon 750DYstereo / monoY-mini2.0YY-
3.
 
Canon 1D Mark IVYstereo / -Y-mini2.0---
4.
 
Canon 1D XYmono / -Y-mini2.0---
5.
 
Canon 1D X Mark IIYmono / monoYYmini3.0---
6.
 
Canon 77DYstereo / monoY-mini2.0YYY
7.
 
Canon 700DYstereo / monoY-mini2.0---
8.
 
Canon 760DYstereo / monoY-mini2.0YY-
9.
 
Canon 800DYstereo / monoY-mini2.0YYY
10.
 
Canon M3Ystereo / monoY-mini2.0YY-
11.
 
Leica S Typ 006Y- / ---mini2.0---
12.
 
Nikon D3SYstereo / ---mini2.0---
13.
 
Nikon D5Ystereo / monoYYmini3.0---
14.
 
Nikon D810Ystereo / monoYYmini3.0Y--
15.
 
Nikon D850Ystereo / monoYYmini3.0YYY
16.
 
Pentax 645ZYstereo / monoY-mini3.0---
17.
 
Sony A7RYstereo / monoYYmicro2.0YY-

It is notable that the 750D offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 645D does not provide wifi capability.

Studio photographers will appreciate that the Pentax 645D (unlike the 750D) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 645D and the 750D have been discontinued, but can regularly be found used on ebay. The 645D was replaced by the Pentax 645Z, while the 750D was followed by the Canon 800D. Further information on the features and operation of the 645D and 750D can be found, respectively, in the Pentax 645D Manual (free pdf) or the online Canon 750D Manual.

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Review summary

So what is the bottom line? Is there a clear favorite between the Pentax 645D and the Canon 750D? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

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Advantages of the Pentax 645D:

  • More detail: Offers more megapixels (39.5 vs 24MP) with a 26% higher linear resolution.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (11 points) in the DXO overall assessment.
  • Richer colors: Generates images with noticeably better colors (1.9 bits more color depth).
  • More dynamic range: Captures a larger spectrum of light and dark details (0.6 EV of extra DR).
  • Better low-light sensitivity: Requires less light for good images (0.5 stops ISO advantage).
  • More complete view: Has a viewfinder with a larger field of view (98% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.51x).
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Can take more shots (800 versus 440) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More heavily discounted: Has been available for much longer (launched in March 2010).

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Reasons to prefer the Canon EOS 750D:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Broader imaging potential: Can capture not only stills but also 1080/30p video.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 921k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (5 vs 1.1 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (132x101mm vs 156x117mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 925g or 62 percent) and is thus easier to take along.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • 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.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More affordable: Was introduced into a lower priced category (93 percent cheaper at launch).
  • More modern: Reflects 4 years and 10 months of technical progress since the 645D launch.

If the number of relative strengths (bullet points above) is taken as a guide, the 750D comes out slightly ahead of the 645D (16 : 15 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

645D 15:16 750D

How about other alternatives? Do the specifications of the Pentax 645D and the Canon 750D place the cameras among the top in their class? Find out in the latest Best DSLR 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 645D or the 750D. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

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 (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.

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Expert Camera Reviews
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Pentax 645D5/5.......... Mar 2010 US$ 9 995ebay.com
2.
 
Canon 750D5/5....75/1004.5/54.5/5 Feb 2015 US$ 749ebay.com
3.
 
Canon 1D Mark IV5/5....89/100.... Oct 2009 US$ 4 999ebay.com
4.
 
Canon 1D X5/5......4.5/54.5/5 Oct 2011 US$ 6 799ebay.com
5.
 
Canon 1D X Mark II....4.5/589/1004.5/54.5/5 Feb 2016 US$ 5 999ebay.com
6.
 
Canon 77D4.5/5..4/582/1004.5/54/5 Feb 2017 US$ 899ebay.com
7.
 
Canon 700D......76/1004.5/54.5/5 Mar 2013 US$ 649ebay.com
8.
 
Canon 760D5/5+..77/1004.5/54.5/5 Feb 2015 US$ 649ebay.com
9.
 
Canon 800D4.5/5..3.5/580/1004.5/54/5 Feb 2017 US$ 749ebay.com
10.
 
Canon M34/5o..75/1004.5/54/5 Feb 2015 US$ 679ebay.com
11.
 
Leica S Typ 006............ Sep 2012 US$ 21 949ebay.com
12.
 
Nikon D3S5/5....89/1004.5/55/5 Oct 2009 US$ 5 199ebay.com
13.
 
Nikon D5....4/589/1004.5/55/5 Jan 2016 US$ 6 499ebay.com
14.
 
Nikon D8105/5..5/586/1005/54.5/5 Jun 2014 US$ 3 299ebay.com
15.
 
Nikon D8504.5/5+ +5/589/1004.5/55/5 Jul 2017 US$ 3 299 amazon.com
16.
 
Pentax 645Z5/5..3.5/5..4.5/55/5 Apr 2014 US$ 8 499ebay.com
17.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 US$ 2 299ebay.com
Note: (+ +) 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 comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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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 make a corresponding selection in the search boxes 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 645D vs Canon 750D

    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 645D Canon 750D
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Pentax 645 mount lenses Canon EF mount lenses
    Launch Date March 2010 February 2015
    Launch Price USD 9,995 USD 749
    Sensor Specs Pentax 645D Canon 750D
    Sensor Technology CCD CMOS
    Sensor Format Medium Format Sensor APS-C Sensor
    Sensor Size 44.0 x 33.0 mm 22.3 x 14.9 mm
    Sensor Area 1452 mm2 332.27 mm2
    Sensor Diagonal 55 mm 26.8 mm
    Crop Factor 0.79x 1.6x
    Sensor Resolution 39.5 Megapixels 24 Megapixels
    Image Resolution 7264 x 5440 pixels 6000 x 4000 pixels
    Pixel Pitch 6.06 μm 3.72 μm
    Pixel Density 2.72 MP/cm2 7.22 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability no Video 1080/30p Video
    ISO Setting 100 - 1,600 ISO 100 - 12,800 ISO
    ISO Boost no Enhancement 100 - 25,600 ISO
    Image Processor PRIME II DIGIC 6
    DXO Sensor Quality (score) 82 71
    DXO Color Depth (bits) 24.6 22.7
    DXO Dynamic Range (EV) 12.6 12.0
    DXO Low Light (ISO) 1262 919
    Screen Specs Pentax 645D Canon 750D
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 98% 95%
    Viewfinder Magnification 0.78x 0.51x
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 921k dots 1040k dots
    LCD Attachment Fixed screen Swivel screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Pentax 645D Canon 750D
    Focus System Phase-detect AF Phase-detect AF
    Continuous Shooting 1.1 shutter flaps/s 5 shutter flaps/s
    Shutter Life Expectancy50 000 actuations100 000 actuations
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    UHS card support no UHS-I
    Connectivity Specs Pentax 645D Canon 750D
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Body Specs Pentax 645D Canon 750D
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type Pentax D-LI90 Canon LP-E17
    Battery Life (CIPA)800 shots per charge440 shots per charge
    Body Dimensions 156 x 117 x 119 mm
    (6.1 x 4.6 x 4.7 in)
    132 x 101 x 78 mm
    (5.2 x 4.0 x 3.1 in)
    Camera Weight 1480 g (52.2 oz) 555 g (19.6 oz)
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    Check 645D offers at
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    Check 750D offers at
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