Nikon D40X vs Sony A58
The Nikon D40X and the Sony Alpha SLT-A58 are two digital cameras that were revealed to the public, respectively, in March 2007 and February 2013. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Nikon has a resolution of 10 megapixels, whereas the Sony provides 19.8 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 Sony Alpha SLT-A58? 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 Nikon D40X and the Sony A58. 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 A58 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 Sony A58 is notably larger (5 percent) than the Nikon D40X. However, the A58 is markedly lighter (6 percent) than the D40X. In this context, it is worth noting that neither the D40X nor the A58 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. 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.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|1.||Nikon D40X||124 mm||94 mm||64 mm||522 g||520||n||Mar 2007||729||ebay.com|
|2.||Sony A58||129 mm||95 mm||78 mm||492 g||690||n||Feb 2013||599||ebay.com|
|3.||Nikon D3200||125 mm||96 mm||77 mm||505 g||540||n||Apr 2012||599||ebay.com|
|4.||Nikon D3100||124 mm||96 mm||75 mm||505 g||550||n||Aug 2010||599||ebay.com|
|5.||Nikon D3000||126 mm||97 mm||64 mm||536 g||500||n||Jul 2009||599||ebay.com|
|6.||Nikon D5000||127 mm||104 mm||80 mm||590 g||510||n||Apr 2009||749||ebay.com|
|7.||Nikon D60||126 mm||94 mm||64 mm||522 g||500||n||Jan 2008||629||ebay.com|
|8.||Nikon D90||132 mm||103 mm||77 mm||703 g||850||n||Aug 2008||1,299||ebay.com|
|9.||Nikon D40||124 mm||94 mm||64 mm||522 g||470||n||Nov 2006||499||ebay.com|
|10.||Nikon D80||132 mm||103 mm||77 mm||668 g||600||n||Aug 2006||999||ebay.com|
|11.||Nikon D50||133 mm||102 mm||76 mm||620 g||400||n||Apr 2005||749||ebay.com|
|12.||Olympus E-420||130 mm||91 mm||53 mm||440 g||500||n||Mar 2008||599||ebay.com|
|13.||Panasonic L10||135 mm||96 mm||78 mm||556 g||450||n||Aug 2007||599||ebay.com|
|14.||Sony A68||143 mm||104 mm||81 mm||610 g||540||n||Nov 2015||699||ebay.com|
|15.||Sony A5100||110 mm||63 mm||36 mm||283 g||400||n||Aug 2014||549||ebay.com|
|16.||Sony A6000||120 mm||67 mm||45 mm||344 g||360||n||Feb 2014||599||ebay.com|
|17.||Sony A3000||128 mm||91 mm||85 mm||411 g||470||n||Aug 2013||329||ebay.com|
|Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The A58 was launched at a somewhat lower price (by 18 percent) than the D40X, which makes it more attractive for photographers on a tight budget. 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 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. 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, but their sensors differ slightly in size. The sensor area in the A58 is 2 percent smaller. They nevertheless have the same format factor of 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a slightly smaller sensor, the A58 offers a higher resolution of 19.8 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 4.31μm versus 6.11μm for the D40X). However, it should be noted that the A58 is much more recent (by 5 years and 11 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 Sony A58 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A58 for good quality output (200 dots per inch) amounts to 27.3 x 18.2 inches or 69.3 x 46.1 cm, for very good quality (250 dpi) 21.8 x 14.5 inches or 55.4 x 36.9 cm, and for excellent quality (300 dpi) 18.2 x 12.1 inches or 46.2 x 30.8 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 Sony Alpha SLT-A58 are ISO 100 to ISO 16000, with the possibility to increase the ISO range to 100-25600.
In terms of underlying technology, the D40X is build around a CCD sensor, while the A58 uses a CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
For many cameras, data on sensor performance has been reported by DXO Mark. 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 A58 offers substantially better image quality than the D40X (overall score 11 points higher). The advantage is based on 0.9 bits higher color depth, 1.1 EV in additional dynamic range, and 0.5 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.
|12.||Olympus E-420||Four Thirds||10.0||3648||2736||none||21.5||10.4||527||56|
|13.||Panasonic L10||Four Thirds||10.0||3648||2736||none||21.3||10.8||429||55|
Many modern cameras are not only capable of taking still images, but can also record movies. The A58 indeed provides for movie recording, while the D40X does not. The highest resolution format that the A58 can use is 1080/60i.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A58 has an electronic viewfinder (1440k 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 viewfinder in the A58 offers a wider field of view (100%) 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 A58 has a higher magnification (0.57x 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 Sony A58, and comparable cameras.
|1.||Nikon D40X||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|2.||Sony A58||1440||n||2.7 / 460||tilting||n||1/4000s||5.0/s||Y||Y|
|3.||Nikon D3200||optical||n||3.0 / 921||fixed||n||1/4000s||4.0/s||Y||n|
|4.||Nikon D3100||optical||n||3.0 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|5.||Nikon D3000||optical||n||3.0 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|6.||Nikon D5000||optical||n||2.7 / 230||full-flex||n||1/4000s||4.0/s||Y||n|
|7.||Nikon D60||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|8.||Nikon D90||optical||Y||3.0 / 920||fixed||n||1/4000s||4.5/s||Y||n|
|9.||Nikon D40||optical||n||2.5 / 230||fixed||n||1/4000s||2.5/s||Y||n|
|10.||Nikon D80||optical||n||2.5 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|11.||Nikon D50||optical||n||2.0 / 130||fixed||n||1/4000s||2.5/s||Y||n|
|12.||Olympus E-420||optical||n||2.7 / 215||fixed||n||1/4000s||3.5/s||Y||n|
|13.||Panasonic L10||optical||n||2.5 / 207||swivel||n||1/4000s||3.0/s||Y||n|
|14.||Sony A68||1440||Y||2.7 / 460||tilting||n||1/4000s||8.0/s||Y||Y|
|15.||Sony A5100||none||n||3.0 / 922||tilting||Y||1/4000s||6.0/s||Y||n|
|16.||Sony A6000||1440||n||3.0 / 922||tilting||n||1/4000s||11.0/s||Y||n|
|17.||Sony A3000||202||n||3.0 / 230||fixed||n||1/4000s||2.5/s||Y||n|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that differentiates the A58 and the D40X is in-body image stabilization (IBIS). The A58 reduces the risk of handshake-induced blur with all attached lenses, while the D40X offers no blur reduction with lenses that themselves do not provide optical image stabilization.
The D40X writes its imaging data to SDHC cards, while the A58 uses SDXC or Memory Stick PRO Duo 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 Sony Alpha SLT-A58 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Nikon D40X||Y||- / -||-||-||-||2.0||-||-||-|
|2.||Sony A58||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|3.||Nikon D3200||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|4.||Nikon D3100||Y||mono / mono||-||-||mini||2.0||-||-||-|
|5.||Nikon D3000||Y||- / -||-||-||-||2.0||-||-||-|
|6.||Nikon D5000||Y||mono / mono||-||-||mini||2.0||-||-||-|
|7.||Nikon D60||Y||- / -||-||-||-||2.0||-||-||-|
|8.||Nikon D90||Y||mono / mono||-||-||mini||2.0||-||-||-|
|9.||Nikon D40||Y||- / -||-||-||-||2.0||-||-||-|
|10.||Nikon D80||Y||- / -||-||-||-||2.0||-||-||-|
|11.||Nikon D50||Y||- / -||-||-||-||2.0||-||-||-|
|12.||Olympus E-420||Y||- / -||-||-||-||2.0||-||-||-|
|13.||Panasonic L10||Y||- / -||-||-||-||2.0||-||-||-|
|14.||Sony A68||Y||stereo / mono||Y||-||micro||2.0||-||-||-|
|15.||Sony A5100||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|16.||Sony A6000||Y||stereo / mono||-||-||micro||2.0||Y||Y||-|
|17.||Sony A3000||Y||stereo / mono||-||-||mini||2.0||-||-||-|
Both the D40X and the A58 have been discontinued, but can regularly be found used on ebay. The D40X was replaced by the Nikon D60 , while the A58 was followed by the Sony A68. Further information on the features and operation of the D40X and A58 can be found, respectively, in the Nikon D40X Manual (free pdf) or the online Sony A58 Manual.
So what is the bottom line? Is there a clear favorite between the Nikon D40X and the Sony A58? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
Arguments in favor of the Nikon D40X:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- More heavily discounted: Has been available for much longer (launched in March 2007).
Reasons to prefer the Sony Alpha SLT-A58:
- More detail: Has more megapixels (19.8 vs 10MP), which boosts linear resolution by 41%.
- Better image quality: Scores substantially higher (11 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 (0.5 stops ISO advantage).
- Broader imaging potential: Can capture not only stills but also 1080/60i video.
- 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 (0.57x vs 0.53x).
- Larger screen: Has a bigger rear LCD (2.7" vs 2.5") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (460k vs 230k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Faster burst: Shoots at higher frequency (5 vs 3 flaps/sec) to capture the decisive moment.
- Longer lasting: Gets more shots (690 versus 520) out of a single battery charge.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- More affordable: Was released into a lower priced segment (18 percent cheaper at launch).
- More modern: Reflects 5 years and 11 months of technical progress since the D40X launch.
If the number of relative strengths (bullet points above) is taken as a guide, the A58 is the clear winner of the contest (16 : 2 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 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 Nikon D40X and the Sony A58 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the D40X or the A58. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.
This is where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], 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||ebay.com|
|2.||Sony A58||3/5||..||..||..||4.5/5||4.5/5||Feb 2013||599||ebay.com|
|3.||Nikon D3200||5/5||+ +||..||73/100||4.5/5||4.5/5||Apr 2012||599||ebay.com|
|4.||Nikon D3100||5/5||+ +||..||72/100||4.5/5||4.5/5||Aug 2010||599||ebay.com|
|5.||Nikon D3000||..||+||..||72/100||4/5||4.5/5||Jul 2009||599||ebay.com|
|6.||Nikon D5000||..||+ +||..||75/100||4/5||4.5/5||Apr 2009||749||ebay.com|
|7.||Nikon D60||..||80/100||..||+ +||4/5||4.5/5||Jan 2008||629||ebay.com|
|8.||Nikon D90||..||+ +||..||+ +||4/5||4.5/5||Aug 2008||1,299||ebay.com|
|9.||Nikon D40||..||81/100||..||+ +||o||4.5/5||Nov 2006||499||ebay.com|
|10.||Nikon D80||..||+||..||+ +||o||4.5/5||Aug 2006||999||ebay.com|
|11.||Nikon D50||..||78/100||..||+ +||4/5||4.5/5||Apr 2005||749||ebay.com|
|12.||Olympus E-420||..||85/100||..||+ +||4/5||4.5/5||Mar 2008||599||ebay.com|
|13.||Panasonic L10||..||85/100||..||+||3.5/5||4/5||Aug 2007||599||ebay.com|
|14.||Sony A68||3/5||..||..||..||4/5||4/5||Nov 2015||699||ebay.com|
|15.||Sony A5100||4.5/5||+||..||..||4.5/5||5/5||Aug 2014||549||ebay.com|
|16.||Sony A6000||5/5||+||4.5/5||80/100||4.5/5||5/5||Feb 2014||599||ebay.com|
|17.||Sony A3000||3/5||+||..||..||4/5||4/5||Aug 2013||329||ebay.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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.
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 make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
Specifications: Nikon D40X vs Sony A58
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||Sony A58|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Nikon F mount lenses||Sony A mount lenses|
|Launch Date||March 2007||February 2013|
|Launch Price||USD 729||USD 599|
|Sensor Specs||Nikon D40X||Sony A58|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||23.6 x 15.8 mm||23.5 x 15.6 mm|
|Sensor Area||372.88 mm2||366.6 mm2|
|Sensor Diagonal||28.4 mm||28.2 mm|
|Sensor Resolution||10 Megapixels||19.8 Megapixels|
|Image Resolution||3872 x 2592 pixels||5456 x 3632 pixels|
|Pixel Pitch||6.11 μm||4.31 μm|
|Pixel Density||2.69 MP/cm2||5.41 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/60i Video|
|ISO Setting||100 - 1,600 ISO||100 - 16,000 ISO|
|ISO Boost||100 - 3,200 ISO||100 - 25,600 ISO|
|DXO Sensor Quality (score)||63||74|
|DXO Color Depth (bits)||22.4||23.3|
|DXO Dynamic Range (EV)||11.4||12.5|
|DXO Low Light (ISO)||516||753|
|Screen Specs||Nikon D40X||Sony A58|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||1440k dots|
|LCD Framing||Live View|
|Rear LCD Size||2.5inch||2.7inch|
|LCD Resolution||230k dots||460k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Nikon D40X||Sony A58|
|Focus System||Phase-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/4000s|
|Continuous Shooting||3 shutter flaps/s||5 shutter flaps/s|
|Shutter Life Expectancy||50 000 actuations||100 000 actuations|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDHC cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||no||no|
|Connectivity Specs||Nikon D40X||Sony A58|
|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||Sony A58|
|Battery Life (CIPA)||520 shots per charge||690 shots per charge|
124 x 94 x 64 mm
(4.9 x 3.7 x 2.5 in)
129 x 95 x 78 mm
(5.1 x 3.7 x 3.1 in)
|Camera Weight||522 g (18.4 oz)||492 g (17.4 oz)|
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