Canon 40D vs Nikon D4S
The Canon EOS 40D and the Nikon D4S are two digital cameras that were revealed to the public, respectively, in August 2007 and February 2014. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (40D) and a full frame (D4S) sensor. The Canon has a resolution of 10.1 megapixels, whereas the Nikon provides 16.2 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 40D and the Nikon D4S? 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.
The side-by-side display below illustrates the physical size and weight of the Canon 40D and the Nikon D4S. 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.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon D4S is considerably larger (59 percent) than the Canon 40D. Moreover, the D4S is substantially heavier (64 percent) than the 40D. It is noteworthy in this context that the D4S 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. 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 (40D) and the Nikon Lens Catalog (D4S).
Concerning battery life, the 40D gets 750 shots out of its BP-511A battery, while the D4S can take 3020 images on a single charge of its EN-EL18a power pack. As can be seen in the images above, the D4S has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the 40D, Canon provides the BG-E2N vertical grip as an optional accessory (see here on eBay).
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.
|1.||Canon 40D||146 mm||108 mm||74 mm||822 g||750||n||Aug 2007||1,299|
|2.||Nikon D4S||160 mm||157 mm||91 mm||1350 g||3020||Y||Feb 2014||6,499|
|3.||Canon T3||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449|
|4.||Canon 60D||145 mm||106 mm||79 mm||755 g||1100||Y||Aug 2010||1,399|
|5.||Canon 50D||146 mm||108 mm||74 mm||822 g||800||Y||Aug 2008||1,299|
|6.||Canon XS||126 mm||98 mm||65 mm||502 g||500||n||Jun 2008||449|
|7.||Canon XSi||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|8.||Canon 30D||144 mm||106 mm||74 mm||785 g||750||n||Feb 2006||1,399|
|9.||Canon XTi||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|10.||Canon 20D||144 mm||106 mm||72 mm||770 g||700||n||Aug 2004||1,499|
|11.||Canon 10D||150 mm||107 mm||75 mm||850 g||500||n||Feb 2003||1,999|
|12.||Nikon D5||160 mm||159 mm||92 mm||1415 g||3780||Y||Jan 2016||6,499|
|13.||Nikon D750||141 mm||113 mm||78 mm||750 g||1230||Y||Sep 2014||2,299|
|14.||Nikon D810||146 mm||123 mm||82 mm||980 g||1200||Y||Jun 2014||3,299|
|15.||Nikon Df||144 mm||110 mm||67 mm||760 g||1400||Y||Nov 2013||2,749|
|16.||Nikon D4||160 mm||157 mm||91 mm||1340 g||2600||Y||Jan 2012||5,999|
|17.||Nikon D90||132 mm||103 mm||77 mm||703 g||850||n||Aug 2008||1,299|
|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 40D was launched at a markedly lower price (by 80 percent) than the D4S, 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.
The size of the imaging sensor is a crucial determinant 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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the 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 Canon 40D features an APS-C sensor and the Nikon D4S a full frame sensor. The sensor area in the D4S is 159 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.
In terms of underlying technology, both cameras are build around CMOS sensors.
With 16.2MP, the D4S offers a higher resolution than the 40D (10.1MP), but the D4S nevertheless has larger individual pixels (pixel pitch of 7.29μm versus 5.73μm for the 40D) due to its larger sensor. Moreover, the D4S is a much more recent model (by 6 years and 6 months) than the 40D, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.
The resolution advantage of the Nikon D4S implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D4S for good quality output (200 dots per inch) amounts to 24.6 x 16.4 inches or 62.6 x 41.7 cm, for very good quality (250 dpi) 19.7 x 13.1 inches or 50.1 x 33.3 cm, and for excellent quality (300 dpi) 16.4 x 10.9 inches or 41.7 x 27.8 cm. The corresponding values for the Canon 40D are 19.4 x 13 inches or 49.4 x 32.9 cm for good quality, 15.6 x 10.4 inches or 39.5 x 26.3 cm for very good quality, and 13 x 8.6 inches 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 Nikon D4S are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-409600.
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 D4S offers substantially better image quality than the 40D (overall score 25 points higher). The advantage is based on 2.3 bits higher color depth, 2 EV in additional dynamic range, and 2.1 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.
| DXO |
|2.||Nikon D4S||Full Frame||16.2||4928||3280||1080/60p||24.4||13.3||3074||89|
|12.||Nikon D5||Full Frame||20.7||5588||3712||4K/30p||25.1||12.3||2343||88|
|13.||Nikon D750||Full Frame||24.2||6016||4016||1080/60p||24.8||14.5||2956||93|
|14.||Nikon D810||Full Frame||36.2||7360||4912||1080/60p||25.7||14.8||2853||97|
|15.||Nikon Df||Full Frame||16.2||4928||3280||none||24.6||13.1||3279||89|
|16.||Nikon D4||Full Frame||16.2||4928||3280||1080/30p||24.7||13.1||2965||89|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The D4S indeed provides for movie recording, while the 40D does not. The highest resolution format that the D4S can use is 1080/60p.
Apart from body and sensor, cameras can and do differ across a variety of features. The 40D and the D4S 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 D4S offers a wider field of view (100%) 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 D4S has a higher magnification (0.70x vs 0.59x), 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 40D and Nikon D4S in connection with corresponding information for a sample of similar cameras.
One difference between the cameras concerns the presence of an on-board flash. The 40D has one, while the D4S 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 Nikon D4S 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 D4S uses Compact Flash or XQD cards. The D4S features dual card slots, which can be very useful in case a memory card fails. In contrast, the 40D only has one slot.
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 Nikon D4S and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Both the 40D and the D4S have been discontinued, but can regularly be found used on eBay. The 40D was replaced by the Canon 50D, while the D4S was followed by the Nikon D5. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Nikon websites.
So what conclusions can be drawn? Is the Canon 40D better than the Nikon D4S or vice versa? A synthesis of the relative strong points of each of the models is listed below.
Reasons to prefer the Canon EOS 40D:
- More compact: Is smaller (146x108mm vs 160x157mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 528g or 39 percent) and hence easier to carry around.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (80 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in August 2007).
Advantages of the Nikon D4S:
- More detail: Has more megapixels (16.2 vs 10.1MP), which boosts linear resolution by 27%.
- Better image quality: Scores substantially higher (25 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (2.3 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (2 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (2.1 stops ISO advantage).
- Broader imaging potential: Can capture not only stills but also 1080/60p video.
- 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 (0.70x 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 (921k vs 230k dots).
- Faster burst: Shoots at higher frequency (11 vs 6.5 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
- Longer lasting: Gets more shots (3020 versus 750) out of a single battery charge.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More modern: Reflects 6 years and 6 months of technical progress since the 40D launch.
If the count of relative strengths (bullet points above) is taken as a measure, the D4S is the clear winner of the contest (17 : 5 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.
How about other alternatives? Do the specifications of the Canon 40D and the Nikon D4S 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 says little about, for example, the shooting experience and imaging performance of the 40D and the D4S in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
This is why hands-on reviews by experts 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.
|1.||Canon 40D||..||+ +||+ +||4.5/5||4.5/5||Aug 2007||1,299|
|2.||Nikon D4S||5/5||..||..||4.5/5||4.5/5||Feb 2014||6,499|
|3.||Canon T3||..||80/100||69/100||4/5||4.5/5||Feb 2011||449|
|4.||Canon 60D||5/5||+||79/100||4/5||4.5/5||Aug 2010||1,399|
|5.||Canon 50D||..||+ +||+ +||4.5/5||4.5/5||Aug 2008||1,299|
|6.||Canon XS||..||82/100||+ +||3.5/5||4.5/5||Jun 2008||449|
|7.||Canon XSi||..||+ +||+ +||4/5||4.5/5||Jan 2008||799|
|8.||Canon 30D||..||+ +||+ +||o||..||Feb 2006||1,399|
|9.||Canon XTi||..||+ +||+ +||o||4/5||Aug 2006||799|
|10.||Canon 20D||..||..||+ +||..||..||Aug 2004||1,499|
|11.||Canon 10D||..||..||+ +||..||..||Feb 2003||1,999|
|12.||Nikon D5||..||..||89/100||4.5/5||5/5||Jan 2016||6,499|
|13.||Nikon D750||5/5||+ +||90/100||4.5/5||4.5/5||Sep 2014||2,299|
|14.||Nikon D810||5/5||..||86/100||5/5||4.5/5||Jun 2014||3,299|
|15.||Nikon Df||4/5||..||81/100||4/5||4/5||Nov 2013||2,749|
|16.||Nikon D4||..||..||..||4.5/5||4.5/5||Jan 2012||5,999|
|17.||Nikon D90||..||+ +||+ +||4/5||4.5/5||Aug 2008||1,299|
|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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
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. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
Specifications: Canon 40D vs Nikon D4S
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 Model||Canon 40D||Nikon D4S|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Nikon F mount lenses|
|Launch Date||August 2007||February 2014|
|Launch Price||USD 1,299||USD 6,499|
|Sensor Specs||Canon 40D||Nikon D4S|
|Sensor Format||APS-C Sensor||Full Frame Sensor|
|Sensor Size||22.3 x 14.9 mm||36.0 x 23.9 mm|
|Sensor Area||332.27 mm2||860.4 mm2|
|Sensor Diagonal||26.8 mm||43.2 mm|
|Sensor Resolution||10.1 Megapixels||16.2 Megapixels|
|Image Resolution||3888 x 2592 pixels||4928 x 3280 pixels|
|Pixel Pitch||5.73 μm||7.29 μm|
|Pixel Density||3.03 MP/cm2||1.88 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/60p Video|
|ISO Setting||100 - 1,600 ISO||100 - 25,600 ISO|
|ISO Boost||100 - 3,200 ISO||50 - 409,600 ISO|
|Image Processor||DIGIC 3||EXPEED 4|
|DXO Sensor Quality (score)||64||89|
|DXO Color Depth (bits)||22.1||24.4|
|DXO Dynamic Range (EV)||11.3||13.3|
|DXO Low Light (ISO)||703||3074|
|Screen Specs||Canon 40D||Nikon D4S|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||100%|
|Top-Level Screen||Control Panel||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.2inch|
|LCD Resolution||230k dots||921k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon 40D||Nikon D4S|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||6.5 shutter flaps/s||11 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations||400 000 actuations|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Fill Flash||Built-in Flash||no On-Board Flash|
|Storage Medium||CF cards||CF or XQD cards|
|Second Storage Option||Single card slot||Dual card slots|
|Connectivity Specs||Canon 40D||Nikon D4S|
|Studio Flash||PC Sync socket||PC Sync socket|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon 40D||Nikon D4S|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||750 shots per charge||3020 shots per charge|
146 x 108 x 74 mm
(5.7 x 4.3 x 2.9 in)
160 x 157 x 91 mm
(6.3 x 6.2 x 3.6 in)
|Camera Weight||822 g (29.0 oz)||1350 g (47.6 oz)|
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