Nikon D40X vs P7800
The Nikon D40X and the Nikon Coolpix P7800 are two digital cameras that were officially introduced, respectively, in March 2007 and September 2013. The D40X is a DSLR, while the P7800 is a fixed lens compact. The cameras are based on an APS-C (D40X) and a 1/1.7-inch (P7800) sensor. The D40X has a resolution of 10 megapixels, whereas the P7800 provides 12 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 Nikon D40X and the Nikon Coolpix P7800? 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 physical size and weight of the Nikon D40X and the Nikon P7800 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.
The D40X can be obtained in two different colors (black, silver), while the P7800 is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon P7800 is notably smaller (20 percent) than the Nikon D40X. In this context, it is worth noting that neither the D40X nor the P7800 are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the P7800 has a lens built in, whereas the D40X is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the D40X and their specifications in the Nikon Lens Catalog.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.
|1.||Nikon D40X||124 mm||94 mm||64 mm||522 g||520||n||Mar 2007||729|
|2.||Nikon P7800||119 mm||78 mm||50 mm||399 g||350||n||Sep 2013||549|
|3.||Canon G16||109 mm||76 mm||40 mm||356 g||360||n||Aug 2013||549|
|4.||Canon G15||107 mm||76 mm||40 mm||352 g||350||n||Sep 2012||499|
|5.||Canon 450D||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|6.||Canon 400D||127 mm||84 mm||65 mm||556 g||370||n||Aug 2006||799|
|7.||Fujifilm X30||119 mm||72 mm||60 mm||423 g||470||n||Aug 2014||599|
|8.||Fujifilm X20||117 mm||70 mm||57 mm||353 g||270||n||Jan 2013||599|
|9.||Fujifilm X10||117 mm||70 mm||57 mm||350 g||270||n||Sep 2011||599|
|10.||Nikon D3100||124 mm||96 mm||75 mm||505 g||550||n||Aug 2010||599|
|11.||Nikon D3000||126 mm||97 mm||64 mm||536 g||500||n||Jul 2009||599|
|12.||Nikon D5000||127 mm||104 mm||80 mm||590 g||510||n||Apr 2009||749|
|13.||Nikon D60||126 mm||94 mm||64 mm||522 g||500||n||Jan 2008||629|
|14.||Nikon D90||132 mm||103 mm||77 mm||703 g||850||n||Aug 2008||1,299|
|15.||Nikon D40||124 mm||94 mm||64 mm||522 g||470||n||Nov 2006||499|
|16.||Olympus E-420||130 mm||91 mm||53 mm||440 g||500||n||Mar 2008||599|
|17.||Panasonic L10||135 mm||96 mm||78 mm||556 g||450||n||Aug 2007||599|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The P7800 was launched at a lower price than the D40X, despite having a lens built in. 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.
The size of the sensor inside a digital camera is one of the key determinants 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. 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 Nikon D40X features an APS-C sensor and the Nikon P7800 a 1/1.7-inch sensor. The sensor area in the P7800 is 88 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 4.5. The sensor in the D40X has a native 3:2 aspect ratio, while the one in the P7800 offers a 4:3 aspect.
Despite having a smaller sensor, the P7800 offers a higher resolution of 12 megapixels, compared with 10 MP of the D40X. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 1.89μm versus 6.11μm for the D40X). However, it should be noted that the P7800 is much more recent (by 6 years and 6 months) than the D40X, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.
The resolution advantage of the Nikon P7800 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the P7800 for good quality output (200 dots per inch) amounts to 20 x 15 inches or 50.8 x 38.1 cm, for very good quality (250 dpi) 16 x 12 inches or 40.6 x 30.5 cm, and for excellent quality (300 dpi) 13.3 x 10 inches or 33.9 x 25.4 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 Coolpix P7800 are ISO 80 to ISO 3200, with the possibility to increase the ISO range to 80-6400.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 review, the D40X has a notably higher overall DXO score than the P7800 (overall score 9 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 1.2 bits higher color depth, 0.3 EV of lower dynamic range, and 1.4 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.
| DXO |
|16.||Olympus E-420||Four Thirds||10.0||3648||2736||none||21.5||10.4||527||56|
|17.||Panasonic L10||Four Thirds||10.0||3648||2736||none||21.3||10.8||429||55|
Many modern cameras cannot only take still pictures, but also record videos. The P7800 indeed provides for movie recording, while the D40X does not. The highest resolution format that the P7800 can use is 1080/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the P7800 has an electronic viewfinder (921k dots), while the D40X 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 following table reports on some other key feature differences and similarities of the Nikon D40X, the Nikon P7800, and comparable cameras.
The Nikon P7800 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 D40X writes its imaging data to SDHC cards, while the P7800 uses SDXC cards.
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 Coolpix P7800 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
Both the D40X and the P7800 have been discontinued, but can regularly be found used on eBay. The D40X was replaced by the Nikon D60 , while the P7800 does not have a direct successor. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon website.
So what is the bottom line? Is there a clear favorite between the Nikon D40X and the Nikon P7800? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
Reasons to prefer the Nikon D40X:
- Better image quality: Scores markedly higher (9 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (1.2 bits more color depth).
- Better low-light sensitivity: Requires less light for good images (1.4 stops ISO advantage).
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- More flexible: Can take a variety of interchangeable lenses, including specialty optics.
- Longer lasting: Can take more shots (520 versus 350) on a single battery charge.
- More heavily discounted: Has been available for much longer (launched in March 2007).
Arguments in favor of the Nikon Coolpix P7800:
- More detail: Has more megapixels (12 vs 10MP), which boosts linear resolution by 7%.
- Broader imaging potential: Can capture not only stills but also 1080/30p video.
- More framing info: Has an electronic viewfinder that displays shooting data.
- 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 (921k vs 230k dots).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (8 vs 3 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Ready to shoot: Comes with an integrated lens, while the D40X requires a separate lens.
- More compact: Is smaller (119x78mm vs 124x94mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the D40X).
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Reflects 6 years and 6 months of technical progress since the D40X launch.
If the count of individual advantages (bullet points above) is taken as a guide, the P7800 is the clear winner of the contest (15 : 7 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 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.
How about other alternatives? Do the specifications of the Nikon D40X and the Nikon P7800 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Travel-Zoom Camera listings 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 D40X and the P7800 in practical situations. 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.
This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.||Nikon D40X||..||79/100||+ +||4/5||4/5||Mar 2007||729|
|2.||Nikon P7800||3/5||..||..||4/5||4.5/5||Sep 2013||549|
|3.||Canon G16||4/5||+||..||4.5/5||4.5/5||Aug 2013||549|
|4.||Canon G15||4/5||+||76/100||4.5/5||4.5/5||Sep 2012||499|
|5.||Canon 450D||..||+ +||+ +||4/5||4.5/5||Jan 2008||799|
|6.||Canon 400D||..||+ +||+ +||o||4/5||Aug 2006||799|
|7.||Fujifilm X30||4/5||..||76/100||4.5/5||4.5/5||Aug 2014||599|
|8.||Fujifilm X20||4/5||+ +||77/100||4.5/5||5/5||Jan 2013||599|
|9.||Fujifilm X10||..||..||76/100||4/5||4.5/5||Sep 2011||599|
|10.||Nikon D3100||5/5||+ +||72/100||4.5/5||4.5/5||Aug 2010||599|
|11.||Nikon D3000||..||+||72/100||4/5||4.5/5||Jul 2009||599|
|12.||Nikon D5000||..||+ +||75/100||4/5||4.5/5||Apr 2009||749|
|13.||Nikon D60||..||80/100||+ +||4/5||4.5/5||Jan 2008||629|
|14.||Nikon D90||..||+ +||+ +||4/5||4.5/5||Aug 2008||1,299|
|15.||Nikon D40||..||81/100||+ +||o||4.5/5||Nov 2006||499|
|16.||Olympus E-420||..||85/100||+ +||4/5||4.5/5||Mar 2008||599|
|17.||Panasonic L10||..||85/100||+||3.5/5||4/5||Aug 2007||599|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.
Other camera comparisons
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Specifications: Nikon D40X vs Nikon P7800
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||Nikon D40X||Nikon P7800|
|Camera Type||Digital single lens reflex||Fixed lens compact camera|
|Camera Lens||Nikon F mount lenses||28-200mm f/2.0-4.0|
|Launch Date||March 2007||September 2013|
|Launch Price||USD 729||USD 549|
|Sensor Specs||Nikon D40X||Nikon P7800|
|Sensor Format||APS-C Sensor||1/1.7" Sensor|
|Sensor Size||23.6 x 15.8 mm||7.6 x 5.7 mm|
|Sensor Area||372.88 mm2||43.32 mm2|
|Sensor Diagonal||28.4 mm||9.5 mm|
|Sensor Resolution||10 Megapixels||12 Megapixels|
|Image Resolution||3872 x 2592 pixels||4000 x 3000 pixels|
|Pixel Pitch||6.11 μm||1.89 μm|
|Pixel Density||2.69 MP/cm2||27.70 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/30p Video|
|ISO Setting||100 - 1,600 ISO||80 - 3,200 ISO|
|ISO Boost||100 - 3,200 ISO||80 - 6,400 ISO|
|DXO Sensor Quality (score)||63||54|
|DXO Color Depth (bits)||22.4||21.2|
|DXO Dynamic Range (EV)||11.4||11.7|
|DXO Low Light (ISO)||516||200|
|Screen Specs||Nikon D40X||Nikon P7800|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||921k dots|
|LCD Framing||Live View|
|Rear LCD Size||2.5inch||3.0inch|
|LCD Resolution||230k dots||921k dots|
|LCD Attachment||Fixed screen||Swivel screen|
|Shooting Specs||Nikon D40X||Nikon P7800|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Continuous Shooting||3 shutter flaps/s||8 shutter flaps/s|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDHC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||no||no|
|Connectivity Specs||Nikon D40X||Nikon P7800|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Nikon D40X||Nikon P7800|
|Battery Life (CIPA)||520 shots per charge||350 shots per charge|
124 x 94 x 64 mm
(4.9 x 3.7 x 2.5 in)
119 x 78 x 50 mm
(4.7 x 3.1 x 2.0 in)
|Camera Weight||522 g (18.4 oz)||399 g (14.1 oz)|
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