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Canon 40D vs Pentax 645Z

The Canon EOS 40D and the Pentax 645Z are two digital cameras that were announced, respectively, in August 2007 and April 2014. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (40D) and a medium format (645Z) sensor. The Canon has a resolution of 10.1 megapixels, whereas the Pentax provides 51.1 MP.

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

Headline Specifications
Canon 40D   Pentax 645Z
Canon 40D Pentax 645Z
Digital single lens reflex Digital single lens reflex
Canon EF mount lenses Pentax 645 mount lenses
10.1 MP, APS-C Sensor 51.1 MP, Medium Format Sensor
no Video 1080/60i Video
ISO 100-1600 (100-3200) ISO 100-204800
Optical viewfinder Optical viewfinder
3.0" LCD, 230k dots 3.2" LCD, 1037k dots
Fixed screen (not touch-sensitive) Tilting screen (not touch-sensitive)
6.5 shutter flaps per second 3 shutter flaps per second
Not weather sealedWeathersealed body
750 shots per battery charge650 shots per battery charge
146 x 108 x 74 mm, 822 g 156 x 117 x 123 mm, 1550 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 40D and the Pentax 645Z? 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: Canon 40D vs Pentax 645Z

An illustration of the physical size and weight of the Canon 40D and the Pentax 645Z is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth measures are rounded to the nearest millimeter.

Size Canon 40D vs Pentax 645Z
Compare 40D versus 645Z top
Comparison 40D or 645Z rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax 645Z is notably larger (16 percent) than the Canon 40D. Moreover, the 645Z is substantially heavier (89 percent) than the 40D. It is noteworthy in this context that the 645Z is splash and dust-proof, while the 40D 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 40D gets 750 shots out of its BP-511A battery, while the 645Z can take 650 images on a single charge of its D-LI90 power pack.

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
 
Canon 40D» 5.7 in 4.3 in 2.9 in 29.0 oz 750 n Aug 2007 1,299- i Canon 40D
 
Pentax 645Z« 6.1 in 4.6 in 4.8 in 54.7 oz 650 Y Apr 2014 8,499 i i Pentax 645Z
 
Canon 5DS« » 6.0 in 4.6 in 3.0 in 32.8 oz 700 Y Feb 2015 3,699 i i Canon 5DS
 
Canon 5DS R« » 6.0 in 4.6 in 3.0 in 32.8 oz 700 Y Feb 2015 3,699 i i Canon 5DS R
 
Canon T3« » 5.1 in 3.9 in 3.1 in 17.5 oz 700 n Feb 2011 449- i Canon T3
 
Canon 60D« » 5.7 in 4.2 in 3.1 in 26.6 oz 1100 Y Aug 2010 1,399- i Canon 60D
 
Canon 50D« » 5.7 in 4.3 in 2.9 in 29.0 oz 800 Y Aug 2008 1,299- i Canon 50D
 
Canon XS« » 5.0 in 3.9 in 2.6 in 17.7 oz 500 n Jun 2008 449- i Canon XS
 
Canon XSi« » 5.1 in 3.9 in 2.4 in 18.5 oz 500 n Jan 2008 799- i Canon XSi
 
Canon 30D« » 5.7 in 4.2 in 2.9 in 27.7 oz 750 n Feb 2006 1,399- i Canon 30D
 
Canon XTi« » 5.0 in 3.3 in 2.6 in 19.6 oz 370 n Aug 2006 799- i Canon XTi
 
Canon 20D« » 5.7 in 4.2 in 2.8 in 27.2 oz 700 n Aug 2004 1,499- i Canon 20D
 
Canon 10D« » 5.9 in 4.2 in 3.0 in 30.0 oz 500 n Feb 2003 1,999- i Canon 10D
 
Hasselblad X1D« » 5.9 in 3.9 in 2.8 in 25.6 oz .. Y Jun 2016 8,995 i i Hasselblad X1D
 
Leica SL« » 5.8 in 4.1 in 1.5 in 29.9 oz 400 Y Oct 2015 7,450 i i Leica SL
 
Nikon D90« » 5.2 in 4.1 in 3.0 in 24.8 oz 850 n Aug 2008 1,299- i Nikon D90
 
Pentax 645D« » 6.1 in 4.6 in 4.7 in 52.2 oz 800 Y Mar 2010 9,995- i Pentax 645D
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 40D was launched at a markedly lower price (by 85 percent) than the 645Z, 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.

 

Sensor comparison: Canon 40D vs Pentax 645Z

The size of the imaging sensor is a crucial determinant of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon 40D features an APS-C sensor and the Pentax 645Z a medium format sensor. The sensor area in the 645Z is 333 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 0.79. The sensor in the 40D has a native 3:2 aspect ratio, while the one in the 645Z offers a 4:3 aspect.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.

Canon 40D and Pentax 645Z sensor measures

With 51.1MP, the 645Z offers a higher resolution than the 40D (10.1MP), but the 645Z has smaller individual pixels (pixel pitch of 5.30μm versus 5.73μm for the 40D). Yet, the 645Z is a much more recent model (by 6 years and 7 months) than the 40D, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the 645Z has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax 645Z implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 645Z for good quality output (200 dots per inch) amounts to 41.3 x 31 inch or 104.9 x 78.6 cm, for very good quality (250 dpi) 33 x 24.8 inch or 83.9 x 62.9 cm, and for excellent quality (300 dpi) 27.5 x 20.6 inch or 69.9 x 52.4 cm. The corresponding values for the Canon 40D are 19.4 x 13 inch or 49.4 x 32.9 cm for good quality, 15.6 x 10.4 inch or 39.5 x 26.3 cm for very good quality, and 13 x 8.6 inch or 32.9 x 21.9 cm for excellent quality prints.

The Canon EOS 40D has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 100-3200. The corresponding ISO settings for the Pentax 645Z are ISO 100 to ISO 204800 (no boost).

40D versus 645Z MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 consideration, the 645Z offers substantially better image quality than the 40D (overall score 37 points higher). The advantage is based on 3.9 bits higher color depth, 3.4 EV in additional dynamic range, and 2.7 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar 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
 
Canon 40D» APS-C 10.1 3888 2592-22.111.370364Canon 40D
 
Pentax 645Z« Medium Format 51.1 8256 61921080/60i26.014.74505101Pentax 645Z
 
Canon 5DS« » Full Frame 50.3 8688 57921080/30p24.712.4238187Canon 5DS
 
Canon 5DS R« » Full Frame 50.3 8688 57921080/30p24.612.4230886Canon 5DS R
 
Canon T3« » APS-C 12.2 4272 2848720/30p21.911.075562Canon T3
 
Canon 60D« » APS-C 17.9 5184 34561080/30p22.211.581366Canon 60D
 
Canon 50D« » APS-C 15.1 4752 3168-21.811.469663Canon 50D
 
Canon XS« » APS-C 10.1 3888 2592-----Canon XS
 
Canon XSi« » APS-C 12.2 4272 2848-21.910.869261Canon XSi
 
Canon 30D« » APS-C 8.2 3504 2336-21.510.873659Canon 30D
 
Canon XTi« » APS-C 10.1 3888 2592-22.111.066462Canon XTi
 
Canon 20D« » APS-C 8.2 3504 2336-21.911.072162Canon 20D
 
Canon 10D« » APS-C 6.3 3072 2048-21.110.957157Canon 10D
 
Hasselblad X1D« » Medium Format 51.3 8272 62001080/25p26.214.84489102Hasselblad X1D
 
Leica SL« » Full Frame 24.0 6000 40004K/30p25.013.4182188Leica SL
 
Nikon D90« » APS-C 12.2 4288 2848720/24p22.712.597773Nikon D90
 
Pentax 645D« » Medium Format 39.5 7264 5440-24.612.6126282Pentax 645D

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The 645Z indeed provides for movie recording, while the 40D does not. The highest resolution format that the 645Z can use is 1080/60i.

 

Feature comparison: Canon 40D vs Pentax 645Z

Apart from body and sensor, cameras can and do differ across a range of features. The 40D and the 645Z 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 645Z offers a wider field of view (98%) than the one in the 40D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the 645Z has a higher magnification (0.78x vs 0.59x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon 40D, the Pentax 645Z, and comparable cameras.

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
 
Canon 40D»optical Y 3.0 230 fixed n 1/8000s 6.5 Y n Canon 40D
 
Pentax 645Z«optical Y 3.2 1037 tilting n 1/4000s 3.0 n n Pentax 645Z
 
Canon 5DS« »optical Y 3.2 1040 fixed n 1/8000s 5.0 n n Canon 5DS
 
Canon 5DS R« »optical Y 3.2 1040 fixed n 1/8000s 5.0 n n Canon 5DS R
 
Canon T3« »optical n 2.7 230 fixed n 1/4000s 3.0 Y n Canon T3
 
Canon 60D« »optical Y 3.0 1040 swivel n 1/8000s 5.3 Y n Canon 60D
 
Canon 50D« »optical Y 3.0 920 fixed n 1/8000s 6.3 Y n Canon 50D
 
Canon XS« »optical n 2.5 230 fixed n 1/4000s 3.0 Y n Canon XS
 
Canon XSi« »optical n 3.0 230 fixed n 1/4000s 3.5 Y n Canon XSi
 
Canon 30D« »optical Y 2.5 230 fixed n 1/8000s 5.0 Y n Canon 30D
 
Canon XTi« »optical n 2.5 230 fixed n 1/4000s 3.0 Y n Canon XTi
 
Canon 20D« »optical Y 1.8 118 fixed n 1/8000s 5.0 Y n Canon 20D
 
Canon 10D« »optical Y 1.8 118 fixed n 1/4000s 3.0 Y n Canon 10D
 
Hasselblad X1D« »2360 n 3.0 920 fixed Y 1/2000s 2.3 n n Hasselblad X1D
 
Leica SL« »4400 Y 3.0 1040 fixed Y 1/8000s 11.0 n n Leica SL
 
Nikon D90« »optical Y 3.0 920 fixed n 1/4000s 4.5 Y n Nikon D90
 
Pentax 645D« »optical Y 3.0 921 fixed n 1/4000s 1.1 n n Pentax 645D

One difference between the cameras concerns the presence of an on-board flash. The 40D has one, while the 645Z does not. While the built-in flash of the 40D is not very powerful, it can at times be useful as a fill-in light.

The Pentax 645Z 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.

The 40D writes its imaging data to Compact Flash cards, while the 645Z uses SDXC cards. The 645Z features dual card slots, which can be very useful in case a memory card fails. In contrast, the 40D only has one slot.

 

Connectivity comparison: Canon 40D vs Pentax 645Z

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 40D and Pentax 645Z 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
 
Canon 40D»Y-----2.0---Canon 40D
 
Pentax 645Z«YstereomonoY-mini3.0---Pentax 645Z
 
Canon 5DS« »YmonomonoY-mini3.0---Canon 5DS
 
Canon 5DS R« »YmonomonoY-mini3.0---Canon 5DS R
 
Canon T3« »Ystereomono--mini2.0---Canon T3
 
Canon 60D« »YmonomonoY-mini2.0---Canon 60D
 
Canon 50D« »Y----mini2.0---Canon 50D
 
Canon XS« »Y-----2.0---Canon XS
 
Canon XSi« »Y----mini2.0---Canon XSi
 
Canon 30D« »Y-----2.0---Canon 30D
 
Canon XTi« »Y-----2.0---Canon XTi
 
Canon 20D« »Y-----1.1---Canon 20D
 
Canon 10D« »Y-----1.1---Canon 10D
 
Hasselblad X1D« »YstereomonoYYmini3.0Y--Hasselblad X1D
 
Leica SL« »YstereomonoYYfull3.0Y--Leica SL
 
Nikon D90« »Ymonomono--mini2.0---Nikon D90
 
Pentax 645D« »Ystereo----2.0---Pentax 645D

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

The 645Z is a recent model that features in the current product line-up of Pentax. In contrast, the 40D has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the 40D was succeeded by the Canon 50D. 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.


Review summary: Canon 40D vs Pentax 645Z

So how do things add up? Which of the two cameras – the Canon 40D or the Pentax 645Z – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

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Arguments in favor of the Canon EOS 40D:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (6.5 vs 3 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (146x108mm vs 156x117mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 728g or 47 percent) and hence easier to carry around.
  • Longer lasting: Can take more shots (750 versus 650) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (85 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in August 2007).

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Reasons to prefer the Pentax 645Z:

  • More detail: Has more megapixels (51.1 vs 10.1MP), which boosts linear resolution by 121%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (37 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (3.9 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (3.4 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (2.7 stops ISO advantage).
  • Broader imaging potential: Can capture not only stills but also 1080/60i video.
  • 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 0.59x).
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1037k vs 230k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More modern: Reflects 6 years and 7 months of technical progress since the 40D launch.

If the count of relative strengths (bullet points above) is taken as a measure, the 645Z is the clear winner of the contest (17 : 9 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.

40D 09:17 645Z

How about other alternatives? Do the specifications of the Canon 40D and the Pentax 645Z 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 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 40D or the 645Z 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: Canon 40D vs Pentax 645Z

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 (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
 
Canon 40D»+ ++ +4.5/5o4.5/5 Aug 2007 1,299- i Canon 40D
 
Pentax 645Z«--4.5/55/55/5 Apr 2014 8,499 i i Pentax 645Z
 
Canon 5DS« »+83/1004.5/55/54.5/5 Feb 2015 3,699 i i Canon 5DS
 
Canon 5DS R« »+83/1005/55/54.5/5 Feb 2015 3,699 i i Canon 5DS R
 
Canon T3« »80/10069/1004/54/54.5/5 Feb 2011 449- i Canon T3
 
Canon 60D« »+79/1004/55/54.5/5 Aug 2010 1,399- i Canon 60D
 
Canon 50D« »+ ++ +4.5/55/54.5/5 Aug 2008 1,299- i Canon 50D
 
Canon XS« »82/100+ +3.5/54/54.5/5 Jun 2008 449- i Canon XS
 
Canon XSi« »+ ++ +4/55/54.5/5 Jan 2008 799- i Canon XSi
 
Canon 30D« »+ ++ +oo- Feb 2006 1,399- i Canon 30D
 
Canon XTi« »+ ++ +o4.5/54/5 Aug 2006 799- i Canon XTi
 
Canon 20D« »-+ +-o- Aug 2004 1,499- i Canon 20D
 
Canon 10D« »-+ +-o- Feb 2003 1,999- i Canon 10D
 
Hasselblad X1D« »o81/100--4/5 Jun 2016 8,995 i i Hasselblad X1D
 
Leica SL« »-84/1004.5/54/54/5 Oct 2015 7,450 i i Leica SL
 
Nikon D90« »+ ++ +4/55/54.5/5 Aug 2008 1,299- i Nikon D90
 
Pentax 645D« »---4.5/5- Mar 2010 9,995- i Pentax 645D
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. A score, therefore, has to be seen in close connection to the price and market introduction time 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 40D:
Check Ebay offers
Pentax 645Z:
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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Canon 40D vs Pentax 645Z

    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 40D Pentax 645Z
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Canon EF mount lenses Pentax 645 mount lenses
    Launch Date August 2007 April 2014
    Launch Price USD 1299 USD 8499
    Sensor Specs Canon 40D Pentax 645Z
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor Medium Format Sensor
    Sensor Size 22.3 x 14.9 mm 43.8 x 32.8 mm
    Sensor Area 332.27 mm2 1436.64 mm2
    Sensor Diagonal 26.8 mm 54.7 mm
    Crop Factor 1.6x 0.79x
    Sensor Resolution 10.1 Megapixels 51.1 Megapixels
    Image Resolution 3888 x 2592 pixels 8256 x 6192 pixels
    Pixel Pitch 5.73 μm 5.30 μm
    Pixel Density 3.03 MP/cm2 3.56 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability no Video 1080/60i Video
    ISO Setting 100-1600 ISO 100-204800 ISO
    ISO Boost 100-3200 ISO no Enhancement
    Image Processor DIGIC 3 PRIME III
    DXO Sensor Quality (score) 64 101
    DXO Color Depth (bits) 22.1 26.0
    DXO Dynamic Range (EV) 11.3 14.7
    DXO Low Light (ISO) 703 4505
    Screen Specs Canon 40D Pentax 645Z
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 95% 98%
    Viewfinder Magnification 0.59x 0.78x
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0 inch 3.2 inch
    LCD Resolution 230k dots 1037k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Canon 40D Pentax 645Z
    Autofocus System Phase-detect AF Phase-detect AF
    Manual Focusing AidNo Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000/s 1/4000/s
    Continuous Shooting 6.5 shutter flaps/s 3 shutter flaps/s
    Shutter Life Expectancy100 000 actuations100 000 actuations
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Fill Flash Build-in Flash no On-Board Flash
    Storage Medium CF cards SDXC cards
    Second Storage Option Single card slot Dual card slots
    Connectivity Specs Canon 40D Pentax 645Z
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 2.0 USB 3.0
    HDMI Port no HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Wifi Support no Wifi no Wifi
    Body Specs Canon 40D Pentax 645Z
    Environmental SealingNot weather sealedWeathersealed body
    Battery Type BP-511A power pack D-LI90 power pack
    Battery Life (CIPA)750 shots per charge650 shots per charge
    Body Dimensions 146 x 108 x 74 mm
    (5.7 x 4.3 x 2.9 in)
    156 x 117 x 123 mm
    (6.1 x 4.6 x 4.8 in)
    Camera Weight 822 g (29.0 oz) 1550 g (54.7 oz)

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