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Canon 400D vs Sony A7R II

The Canon EOS 400D (called Canon XTi in some regions) and the Sony Alpha A7R II are two digital cameras that were officially introduced, respectively, in August 2006 and June 2015. The 400D is a DSLR, while the A7R II is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (400D) and a full frame (A7R II) sensor. The Canon has a resolution of 10.1 megapixels, whereas the Sony provides 42.2 MP.

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

Headline Specifications
Canon 400D   Sony A7R II
Canon 400D Sony A7R II
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Sony E mount lenses
10.1 MP, APS-C Sensor 42.2 MP, Full Frame Sensor
no Video 4K/30p Video
ISO 100-1600 ISO 100-25600 (50-102400)
Optical viewfinder Electronic viewfinder (2400k dots)
2.5" LCD, 230k dots 3.0" LCD, 1229k dots
Fixed screen (not touch-sensitive) Tilting screen (not touch-sensitive)
3 shutter flaps per second 5 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Not weather sealedWeathersealed body
370 shots per battery charge290 shots per battery charge
127 x 84 x 65 mm, 556 g 127 x 96 x 60 mm, 625 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 400D and the Sony Alpha A7R II? 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 400D and the Sony A7R II are illustrated 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 400D vs Sony A7R II
Compare 400D versus A7R II top
Comparison 400D or A7R II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7R II is notably larger (14 percent) than the Canon 400D. Moreover, the A7R II is markedly heavier (12 percent) than the 400D. It is noteworthy in this context that the A7R II is splash and dust-proof, while the 400D 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (400D) and the Sony FE Lens Catalog (A7R II). Mirrorless cameras, such as the A7R II, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

Concerning battery life, the 400D gets 370 shots out of its NB-2LH battery, while the A7R II can take 290 images on a single charge of its NP-FW50 power pack. The power pack in the A7R II can be charged via the USB port, which can be very convenient when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras 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 400D» 127 mm 84 mm 65 mm 556 g 370 n Aug 2006 799- i Canon 400D
 
Sony A7R II« 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199- i Sony A7R II
 
Canon 750D« » 132 mm 101 mm 78 mm 555 g 440 n Feb 2015 749- i Canon 750D
 
Canon 760D« » 132 mm 101 mm 78 mm 565 g 440 n Feb 2015 649- i Canon 760D
 
Canon 650D« » 133 mm 100 mm 79 mm 575 g 440 n Jun 2012 849- i Canon 650D
 
Canon 1100D« » 130 mm 100 mm 78 mm 495 g 700 n Feb 2011 449- i Canon 1100D
 
Canon 550D« » 129 mm 98 mm 62 mm 530 g 440 n Feb 2010 699- i Canon 550D
 
Canon 500D« » 129 mm 98 mm 62 mm 520 g 400 n Mar 2009 799- i Canon 500D
 
Canon 450D« » 129 mm 98 mm 62 mm 524 g 500 n Jan 2008 799- i Canon 450D
 
Canon 40D« » 146 mm 108 mm 74 mm 822 g 750 n Aug 2007 1,299- i Canon 40D
 
Canon 350D« » 127 mm 94 mm 64 mm 540 g 400 n Feb 2005 899- i Canon 350D
 
Nikon D40X« » 124 mm 94 mm 64 mm 522 g 520 n Mar 2007 729- i Nikon D40X
 
Sony A7R III« » 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199- i Sony A7R III
 
Sony A99 II« » 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199 i i Sony A99 II
 
Sony A7S II« » 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999 i i Sony A7S II
 
Sony A7 II« » 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999- i Sony A7 II
 
Sony A7R« » 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299- i Sony A7R
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 400D was launched at a markedly lower price (by 75 percent) than the A7R II, 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

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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 400D features an APS-C sensor and the Sony A7R II a full frame sensor. The sensor area in the A7R II is 162 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 400D and Sony A7R II sensor measures

With 42.2MP, the A7R II offers a higher resolution than the 400D (10.1MP), but the A7R II has smaller individual pixels (pixel pitch of 4.52μm versus 5.71μm for the 400D). Yet, the A7R II is a much more recent model (by 8 years and 9 months) than the 400D, 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 A7R II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A7R II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R II for good quality output (200 dots per inch) amounts to 39.8 x 26.5 inch or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inch or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inch or 67.3 x 44.9 cm. The corresponding values for the Canon 400D 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 A7R II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Canon EOS 400D has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Sony Alpha A7R II are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-102400.

400D versus A7R II 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 A7R II offers substantially better image quality than the 400D (overall score 36 points higher). The advantage is based on 3.9 bits higher color depth, 2.9 EV in additional dynamic range, and 2.4 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.

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 400D» APS-C 10.1 3888 2592-22.111.066462Canon 400D
 
Sony A7R II« Full Frame 42.2 7952 53044K/30p26.013.9343498Sony A7R II
 
Canon 750D« » APS-C 24.0 6000 40001080/60p22.712.091971Canon 750D
 
Canon 760D« » APS-C 24.0 6000 40001080/30p22.612.091570Canon 760D
 
Canon 650D« » APS-C 17.9 5184 34561080/30p21.711.272262Canon 650D
 
Canon 1100D« » APS-C 12.2 4272 2848720/30p21.911.075562Canon 1100D
 
Canon 550D« » APS-C 17.9 5184 34561080/30p22.111.578466Canon 550D
 
Canon 500D« » APS-C 15.1 4752 31681080/20p21.711.566363Canon 500D
 
Canon 450D« » APS-C 12.2 4272 2848-21.910.869261Canon 450D
 
Canon 40D« » APS-C 10.1 3888 2592-22.111.370364Canon 40D
 
Canon 350D« » APS-C 8.0 3456 2304-21.810.863760Canon 350D
 
Nikon D40X« » APS-C 10.0 3872 2592-22.411.451663Nikon D40X
 
Sony A7R III« » Full Frame 42.2 7952 53044K/30p26.014.73523100Sony A7R III
 
Sony A99 II« » Full Frame 42.2 7952 53044K/30p25.413.4231792Sony A99 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
 
Sony A7R« » Full Frame 36.2 7360 49121080/60p25.614.1274695Sony A7R

Many modern cameras are not only capable of taking still images, but can also record movies. The A7R II indeed provides for movie recording, while the 400D does not. The highest resolution format that the A7R II can use is 4K/30p.

 

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A7R II has an electronic viewfinder (2400k dots), while the 400D 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 A7R II offers a wider field of view (100%) than the one in the 400D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A7R II has a higher magnification (0.78x vs 0.49x), 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 400D and Sony A7R II in connection with corresponding information for a sample of similar 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 400D»optical n 2.5 230 fixed n 1/4000s 3.0 Y n Canon 400D
 
Sony A7R II«2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y Sony A7R II
 
Canon 750D« »optical n 3.0 1040 swivel Y 1/4000s 5.0 Y n Canon 750D
 
Canon 760D« »optical Y 3.0 1040 swivel Y 1/4000s 5.0 Y n Canon 760D
 
Canon 650D« »optical n 3.0 1040 swivel Y 1/4000s 5.0 Y n Canon 650D
 
Canon 1100D« »optical n 2.7 230 fixed n 1/4000s 3.0 Y n Canon 1100D
 
Canon 550D« »optical n 3.0 1040 fixed n 1/4000s 3.7 Y n Canon 550D
 
Canon 500D« »optical n 3.0 920 fixed n 1/4000s 3.4 Y n Canon 500D
 
Canon 450D« »optical n 3.0 230 fixed n 1/4000s 3.5 Y n Canon 450D
 
Canon 40D« »optical Y 3.0 230 fixed n 1/8000s 6.5 Y n Canon 40D
 
Canon 350D« »optical n 1.8 115 fixed n 1/4000s 3.0 Y n Canon 350D
 
Nikon D40X« »optical n 2.5 230 fixed n 1/4000s 3.0 Y n Nikon D40X
 
Sony A7R III« »3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y Sony A7R III
 
Sony A99 II« »2400 Y 3.0 1229 full-flex n 1/8000s 12.0 n Y Sony A99 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
 
Sony A7R« »2400 n 3.0 1230 tilting n 1/8000s 4.0 n n Sony A7R

One difference between the cameras concerns the presence of an on-board flash. The 400D has one, while the A7R II does not. While the built-in flash of the 400D 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 II 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 400D writes its imaging data to Compact Flash cards, while the A7R II uses SDXC or Memory Stick PRO Duo 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 Canon EOS 400D and Sony Alpha A7R II 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 400D»Y-----2.0---Canon 400D
 
Sony A7R II«YstereomonoYYmicro2.0YY-Sony A7R II
 
Canon 750D« »YstereomonoY-mini2.0YY-Canon 750D
 
Canon 760D« »YstereomonoY-mini2.0YY-Canon 760D
 
Canon 650D« »YstereomonoY-mini2.0---Canon 650D
 
Canon 1100D« »Ystereomono--mini2.0---Canon 1100D
 
Canon 550D« »Ystereo-Y-mini2.0---Canon 550D
 
Canon 500D« »Ymonomono--mini2.0---Canon 500D
 
Canon 450D« »Y----mini2.0---Canon 450D
 
Canon 40D« »Y-----2.0---Canon 40D
 
Canon 350D« »Y-----2.0---Canon 350D
 
Nikon D40X« »Y-----2.0---Nikon D40X
 
Sony A7R III« »YstereomonoYYmicro3.1YYYSony A7R III
 
Sony A99 II« »YstereomonoYYmicro2.0YYYSony A99 II
 
Sony A7S II« »YstereomonoYYmicro2.0YY-Sony A7S II
 
Sony A7 II« »YstereomonoYYmicro2.0YY-Sony A7 II
 
Sony A7R« »YstereomonoYYmicro2.0YY-Sony A7R

It is notable that the A7R II offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 400D does not offer wifi capability.

Both the 400D and the A7R II have been discontinued, but can regularly be found used on eBay. The 400D was replaced by the Canon 450D, while the A7R II was followed by the Sony Alpha A7R III. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Sony websites.


Review summary

So how do things add up? Is there a clear favorite between the Canon 400D and the Sony A7R II? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

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Advantages of the Canon EOS 400D:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • More compact: Is smaller (127x84mm vs 127x96mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 69g or 11 percent) and hence easier to carry around.
  • Longer lasting: Can take more shots (370 versus 290) 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 (75 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in August 2006).

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Reasons to prefer the Sony Alpha A7R II:

  • More detail: Has more megapixels (42.2 vs 10.1MP), which boosts linear resolution by 105%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (36 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 (2.9 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (2.4 stops ISO advantage).
  • Broader imaging potential: Can capture not only stills but also 4K/30p video.
  • 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 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.49x).
  • Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 230k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (5 vs 3 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • 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.
  • More modern: Reflects 8 years and 9 months of technical progress since the 400D launch.

If the count of individual advantages (bullet points above) is taken as a guide, the A7R II is the clear winner of the contest (23 : 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

400D 08:23 A7R II

How about other alternatives? Do the specifications of the Canon 400D and the Sony A7R II place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens 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 400D or the A7R II perform in practice. 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 adjacent summary-table relays the overall verdicts of several of the most popular 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 400D»+ ++ +o4.5/54/5 Aug 2006 799- i Canon 400D
 
Sony A7R II«+ +90/1005/54.5/55/5 Jun 2015 3,199- i Sony A7R II
 
Canon 750D« »-75/1004.5/54.5/54.5/5 Feb 2015 749- i Canon 750D
 
Canon 760D« »+77/1004.5/54.5/54.5/5 Feb 2015 649- i Canon 760D
 
Canon 650D« »+ +77/1004.5/54.5/54.5/5 Jun 2012 849- i Canon 650D
 
Canon 1100D« »80/10069/1004/54/54.5/5 Feb 2011 449- i Canon 1100D
 
Canon 550D« »+ +77/1004/55/54.5/5 Feb 2010 699- i Canon 550D
 
Canon 500D« »+ +74/1004.5/55/54.5/5 Mar 2009 799- i Canon 500D
 
Canon 450D« »+ ++ +4/55/54.5/5 Jan 2008 799- i Canon 450D
 
Canon 40D« »+ ++ +4.5/5o4.5/5 Aug 2007 1,299- i Canon 40D
 
Canon 350D« »80/100+ +oo- Feb 2005 899- i Canon 350D
 
Nikon D40X« »79/100+ +4/5o4/5 Mar 2007 729- i Nikon D40X
 
Sony A7R III« »+ +90/1004.5/55/55/5 Oct 2017 3,199- i Sony A7R III
 
Sony A99 II« »-85/1004.5/54.5/54.5/5 Sep 2016 3,199 i i Sony A99 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
 
Sony A7R« »+ +82/1004.5/55/55/5 Oct 2013 2,299- i Sony A7R
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

The above review scores should be interpreted 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. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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 400D:
Check Ebay offers
Sony A7R II:
Check Ebay offers

Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Canon 400D vs Sony A7R II

    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 400D Sony A7R II
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Sony E mount lenses
    Launch Date August 2006 June 2015
    Launch Price USD 799 USD 3199
    Sensor Specs Canon 400D Sony A7R II
    Sensor Technology CMOS BSI-CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 22.2 x 14.8 mm 35.9 x 24.0 mm
    Sensor Area 328.56 mm2 861.6 mm2
    Sensor Diagonal 26.7 mm 43.2 mm
    Crop Factor 1.6x 1.0x
    Sensor Resolution 10.1 Megapixels 42.2 Megapixels
    Image Resolution 3888 x 2592 pixels 7952 x 5304 pixels
    Pixel Pitch 5.71 μm 4.52 μm
    Pixel Density 3.07 MP/cm2 4.90 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability no Video 4K/30p Video
    ISO Setting 100-1600 ISO 100-25600 ISO
    ISO Boost no Enhancement 50-102400 ISO
    Image Processor DIGIC II BIONZ X
    DXO Sensor Quality (score) 62 98
    DXO Color Depth (bits) 22.1 26.0
    DXO Dynamic Range (EV) 11.0 13.9
    DXO Low Light (ISO) 664 3434
    Screen Specs Canon 400D Sony A7R II
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.49x 0.78x
    Viewfinder Resolution 2400k dots
    LCD Framing Live View
    Rear LCD Size 2.5 inch 3.0 inch
    LCD Resolution 230k dots 1229k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Canon 400D Sony A7R II
    Autofocus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing AidNo Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000/s 1/8000/s
    Continuous Shooting 3 shutter flaps/s 5 shutter flaps/s
    Shutter Life Expectancy50 000 actuations500 000 actuations
    Electronic Shutterno E-ShutterYES
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Build-in Flash no On-Board Flash
    Storage Medium CF cards MS or SDXC cards
    Second Storage Option Single card slot Single card slot
    Connectivity Specs Canon 400D Sony A7R II
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port no 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
    Body Specs Canon 400D Sony A7R II
    Environmental SealingNot weather sealedWeathersealed body
    Battery Type NB-2LH NP-FW50
    Battery Life (CIPA)370 shots per charge290 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 127 x 84 x 65 mm
    (5.0 x 3.3 x 2.6 in)
    127 x 96 x 60 mm
    (5.0 x 3.8 x 2.4 in)
    Camera Weight 556 g (19.6 oz) 625 g (22.0 oz)

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