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Nikon D40X vs D90

The Nikon D40X and the Nikon D90 are two digital cameras that were announced, respectively, in March 2007 and August 2008. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The D40X has a resolution of 10 megapixels, whereas the D90 provides 12.2 MP.

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

Headline Specifications
Nikon D40X versus Nikon D90
Nikon D40X Nikon D90
Digital single lens reflex Digital single lens reflex
Nikon F mount lenses Nikon F mount lenses
10 MP, APS-C Sensor 12.2 MP, APS-C Sensor
no Video 720/24p Video
ISO 100-1,600 (100 - 3,200) ISO 200-3,200 (200 - 6,400)
Optical viewfinder Optical viewfinder
2.5 LCD, 230k dots 3.0 LCD, 920k dots
Fixed screen (not touch-sensitive) Fixed screen (not touch-sensitive)
3 shutter flaps per second 4.5 shutter flaps per second
520 shots per battery charge850 shots per battery charge
124 x 94 x 64 mm, 522 g 132 x 103 x 77 mm, 703 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D40X and the Nikon D90? 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

An illustration of the physical size and weight of the Nikon D40X and the Nikon D90 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

The D40X can be obtained in two different colors (black, silver), while the D90 is only available in black.

Size Nikon D40X vs Nikon D90
Compare D40X versus D90 top
Comparison D40X or D90 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon D90 is notably larger (17 percent) than the Nikon D40X. Moreover, the D90 is substantially heavier (35 percent) than the D40X. In this context, it is worth noting that neither the D40X nor the D90 are weather-sealed.

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. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can compare the optics available in the Nikon Lens Catalog.

Concerning battery life, the D40X gets 520 shots out of its EN-EL9 battery, while the D90 can take 850 images on a single charge of its EN-EL3e power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

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Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life 1
Weather
Sealing
Camera
Launch 2
Launch
Price (USD)
Street
Price
 
Nikon D40X 4.9 in 3.7 in 2.5 in 18.4 oz 520 n Mar 2007 729i
 
Nikon D90 5.2 in 4.1 in 3.0 in 24.8 oz 850 n Aug 2008 1,299i
 
Canon 40D 5.7 in 4.3 in 2.9 in 29.0 oz 750 n Aug 2007 1,299i
 
Nikon D7000 5.2 in 4.1 in 3.0 in 27.5 oz 1050 Y Sep 2010 1,499i
 
Nikon D3100 4.9 in 3.8 in 3.0 in 17.8 oz 550 n Aug 2010 599i
 
Nikon D300S 5.8 in 4.5 in 3.2 in 33.1 oz 950 Y Jul 2009 1,799i
 
Nikon D3000 5.0 in 3.8 in 2.5 in 18.9 oz 500 n Jul 2009 599i
 
Nikon D5000 5.0 in 4.1 in 3.1 in 20.8 oz 510 n Apr 2009 749i
 
Nikon D60 5.0 in 3.7 in 2.5 in 18.4 oz 500 n Jan 2008 629i
 
Nikon D40 4.9 in 3.7 in 2.5 in 18.4 oz 470 n Nov 2006 499i
 
Nikon D80 5.2 in 4.1 in 3.0 in 23.6 oz 600 n Aug 2006 999i
 
Nikon D50 5.2 in 4.0 in 3.0 in 21.9 oz 400 n Apr 2005 749i
 
Olympus E-420 5.1 in 3.6 in 2.1 in 15.5 oz 500 n Mar 2008 599i
 
Panasonic L10 5.3 in 3.8 in 3.1 in 19.6 oz 450 n Aug 2007 599i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.

Any camera decision will obviously take relative prices into account. 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 D40X was launched at a markedly lower price (by 44 percent) than the D90, 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. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature an APS-C sensor and have a format factor (sometimes also referred to as "crop factor") of 1.5. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Nikon D40X and Nikon D90 sensor measures

While the two cameras under review share the same sensor size, the D90 offers a higher resolution of 12.2 megapixels, compared with 10 MP of the D40X. This megapixels advantage translates into a 11 percent gain in linear resolution. On the other hand, these sensor specs imply that the D90 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 5.53μm versus 6.11μm for the D40X). However, it should be noted that the D90 is a somewhat more recent model (by 1 year and 5 months) than the D40X, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.

The resolution advantage of the Nikon D90 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D90 for good quality output (200 dots per inch) amounts to 21.4 x 14.2 inches or 54.5 x 36.2 cm, for very good quality (250 dpi) 17.2 x 11.4 inches or 43.6 x 28.9 cm, and for excellent quality (300 dpi) 14.3 x 9.5 inches or 36.3 x 24.1 cm. The corresponding values for the Nikon D40X are 19.4 x 13 inches or 49.2 x 32.9 cm for good quality, 15.5 x 10.4 inches or 39.3 x 26.3 cm for very good quality, and 12.9 x 8.6 inches or 32.8 x 21.9 cm for excellent quality prints.

The Nikon D40X 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 D90 are ISO 200 to ISO 3200, with the possibility to increase the ISO range to 200-6400.

D40X versus D90 MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under consideration, the D90 has a markedly higher DXO score than the D40X (overall score 10 points higher), which will translate into better image quality. The advantage is based on 0.3 bits higher color depth, 1.1 EV in additional dynamic range, and 0.9 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
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
 
Nikon D40X APS-C 10.0 3872 2592none22.411.451663
 
Nikon D90 APS-C 12.2 4288 2848720/24p22.712.597773
 
Canon 40D APS-C 10.1 3888 2592none22.111.370364
 
Nikon D7000 APS-C 16.1 4928 326410800/24p23.513.9116780
 
Nikon D3100 APS-C 14.2 4608 30721080/24p22.511.391967
 
Nikon D300S APS-C 12.2 4288 2848720/24p22.512.278770
 
Nikon D3000 APS-C 10.0 3872 2592none22.311.156362
 
Nikon D5000 APS-C 12.2 4288 2848720/24p22.712.586872
 
Nikon D60 APS-C 10.0 3872 2592none22.511.456265
 
Nikon D40 APS-C 6.0 3008 2000none21.011.056156
 
Nikon D80 APS-C 10.0 3872 2592none22.111.252461
 
Nikon D50 APS-C 6.0 3008 2000none20.910.856055
 
Olympus E-420 Four Thirds 10.0 3648 2736none21.510.452756
 
Panasonic L10 Four Thirds 10.0 3648 2736none21.310.842955

Many modern cameras cannot only take still pictures, but also record videos. The D90 indeed provides for movie recording, while the D40X does not. The highest resolution format that the D90 can use is 720/24p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The D40X and the D90 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 D90 offers a wider field of view (96%) than the one in the D40X (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the D90 has a higher magnification (0.63x vs 0.53x), 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 Nikon D40X, the Nikon D90, and comparable cameras.

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Core Features
  Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
(000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
 
Nikon D40Xoptical n 2.5 230 fixed n 1/4000s 3.0 Y n
 
Nikon D90optical Y 3.0 920 fixed n 1/4000s 4.5 Y n
 
Canon 40Doptical Y 3.0 230 fixed n 1/8000s 6.5 Y n
 
Nikon D7000optical Y 3.0 921 fixed n 1/8000s 6.0 Y n
 
Nikon D3100optical n 3.0 230 fixed n 1/4000s 3.0 Y n
 
Nikon D300Soptical Y 3.0 920 fixed n 1/8000s 7.0 Y n
 
Nikon D3000optical n 3.0 230 fixed n 1/4000s 3.0 Y n
 
Nikon D5000optical n 2.7 230 full-flex n 1/4000s 4.0 Y n
 
Nikon D60optical n 2.5 230 fixed n 1/4000s 3.0 Y n
 
Nikon D40optical n 2.5 230 fixed n 1/4000s 2.5 Y n
 
Nikon D80optical n 2.5 230 fixed n 1/4000s 3.0 Y n
 
Nikon D50optical n 2.0 130 fixed n 1/4000s 2.5 Y n
 
Olympus E-420optical n 2.7 215 fixed n 1/4000s 3.5 Y n
 
Panasonic L10optical n 2.5 207 swivel n 1/4000s 3.0 Y n

One feature that is present on the D90, but is missing on the D40X 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.

Concerning the storage of imaging data, both the D40X and the D90 write their files to SDHC 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 Nikon D40X and Nikon D90 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
 
Nikon D40XY-----2.0---
 
Nikon D90Ymonomono--mini2.0---
 
Canon 40DY-----2.0---
 
Nikon D7000YmonomonoY-mini2.0---
 
Nikon D3100Ymonomono--mini2.0---
 
Nikon D300SYstereomonoY-mini2.0---
 
Nikon D3000Y-----2.0---
 
Nikon D5000Ymonomono--mini2.0---
 
Nikon D60Y-----2.0---
 
Nikon D40Y-----2.0---
 
Nikon D80Y-----2.0---
 
Nikon D50Y-----2.0---
 
Olympus E-420Y-----2.0---
 
Panasonic L10Y-----2.0---

Both the D40X and the D90 have been discontinued, but can regularly be found used on eBay. The D40X was replaced by the Nikon D60 , while the D90 was followed by the Nikon D7000. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon website.

Review summary

So what conclusions can be drawn? Which of the two cameras – the Nikon D40X or the Nikon D90 – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.


Arguments in favor of the Nikon D40X:

  • More compact: Is smaller (124x94mm vs 132x103mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 181g or 26 percent) and hence easier to carry around.
  • More affordable: Was introduced into a lower priced category (44 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in March 2007).


Reasons to prefer the Nikon D90:

  • More detail: Has more megapixels (12.2 vs 10MP), which boosts linear resolution by 10%.
  • Better image quality: Scores markedly higher (10 points) in the DXO overall evaluation.
  • More dynamic range: Captures a broader range of light and dark details (1.1 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (0.9 stops ISO advantage).
  • Broader imaging potential: Can capture not only stills but also 720/24p video.
  • More complete view: Has a viewfinder with a larger field of view (96% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.63x vs 0.53x).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • 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 (920k vs 230k dots).
  • Faster burst: Shoots at higher frequency (4.5 vs 3 flaps/sec) to capture the decisive moment.
  • Longer lasting: Gets more shots (850 versus 520) out of a single battery charge.
  • More modern: Was introduced somewhat (1 year and 5 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the D90 is the clear winner of the contest (13 : 4 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 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.

D40X 04:13 D90

How about other alternatives? Do the specifications of the Nikon D40X and the Nikon D90 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the D40X and the D90 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.

Expert reviews

This is why expert reviews are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.

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Review Scores
  Camera
Model
camera
  labs  
dp
review  
ephoto
  zine  
imaging
resource
photography
  blog  
Camera
Launch
Launch
Price (USD)
Street
Price
 
Nikon D40X79/100+ +4/5o4/5 Mar 2007 729i
 
Nikon D90+ ++ +4/55/54.5/5 Aug 2008 1,299i
 
Canon 40D+ ++ +4.5/5o4.5/5 Aug 2007 1,299i
 
Nikon D7000..80/1004.5/55/54.5/5 Sep 2010 1,499i
 
Nikon D3100+ +72/1004.5/55/54.5/5 Aug 2010 599i
 
Nikon D300S+ +82/1004/55/54.5/5 Jul 2009 1,799i
 
Nikon D3000+72/1004/53.5/54.5/5 Jul 2009 599i
 
Nikon D5000+ +75/1004/55/54.5/5 Apr 2009 749i
 
Nikon D6080/100+ +4/5o4.5/5 Jan 2008 629i
 
Nikon D4081/100+ +o5/54.5/5 Nov 2006 499i
 
Nikon D80++ +o4.5/54.5/5 Aug 2006 999i
 
Nikon D5078/100+ +4/5o4.5/5 Apr 2005 749i
 
Olympus E-42085/100+ +4/5o4.5/5 Mar 2008 599i
 
Panasonic L1085/100+3.5/5o4/5 Aug 2007 599i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

Nikon D40X:
Check Ebay offers
Nikon D90:
Check Ebay offers

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 use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Specifications: Nikon D40X vs Nikon D90

    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 Nikon D40X Nikon D90
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Nikon F mount lenses Nikon F mount lenses
    Launch Date March 2007 August 2008
    Launch Price USD 729 USD 1,299
    Sensor Specs Nikon D40X Nikon D90
    Sensor Technology CCD CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 23.6 x 15.8 mm 23.6 x 15.8 mm
    Sensor Area 372.88 mm2 372.88 mm2
    Sensor Diagonal 28.4 mm 28.4 mm
    Crop Factor 1.5x 1.5x
    Sensor Resolution 10 Megapixels 12.2 Megapixels
    Image Resolution 3872 x 2592 pixels 4288 x 2848 pixels
    Pixel Pitch 6.11 μm 5.53 μm
    Pixel Density 2.69 MP/cm2 3.28 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 720/24p Video
    ISO Setting 100 - 1,600 ISO 200 - 3,200 ISO
    ISO Boost 100 - 3,200 ISO 200 - 6,400 ISO
    Image Processor EXPEED EXPEED
    DXO Sensor Quality (score) 63 73
    DXO Color Depth (bits) 22.4 22.7
    DXO Dynamic Range (EV) 11.4 12.5
    DXO Low Light (ISO) 516 977
    Screen Specs Nikon D40X Nikon D90
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 95% 96%
    Viewfinder Magnification 0.53x 0.63x
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View
    Rear LCD Size 2.5inch 3.0inch
    LCD Resolution 230k dots 920k dots
    LCD Attachment Fixed screen Fixed screen
    Shooting Specs Nikon D40X Nikon D90
    Focus System Phase-detect AF Phase-detect AF
    Continuous Shooting 3 shutter flaps/s 4.5 shutter flaps/s
    Shutter Life Expectancy50 000 actuations100 000 actuations
    Fill Flash Build-in Flash Build-in Flash
    Storage Medium SDHC cards SDHC cards
    Second Storage Option Single card slot Single card slot
    UHS card support no no
    Connectivity Specs Nikon D40X Nikon D90
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI mini HDMI
    Wifi Support no Wifi no Wifi
    Body Specs Nikon D40X Nikon D90
    Battery Type EN-EL9 EN-EL3e
    Battery Life (CIPA)520 shots per charge850 shots per charge
    Body Dimensions 124 x 94 x 64 mm
    (4.9 x 3.7 x 2.5 in)
    132 x 103 x 77 mm
    (5.2 x 4.1 x 3.0 in)
    Camera Weight 522 g (18.4 oz) 703 g (24.8 oz)

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