Sony A900 versus Nikon D750
The Sony Alpha A900 and the Nikon D750 are two digital cameras that were announced, respectively, in September 2008 and September 2014. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with a full frame sensor. The Sony has a resolution of 24.4 megapixel, whereas the Nikon provides 24.2 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.
Body comparison: Sony A900 vs Nikon D750
The physical size and weight of the Sony A900 and the Nikon D750 are illustrated in the side-by-side display below. Three consecutive perspectives from the front, the top, and the back are presented. All width, height and depth dimensions are rounded to the nearest millimeter. You can also use the toggle button to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left side – the A900 – represents the basis for the calculations across all the size and weight measures).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon D750 is notably smaller (13 percent) than the Sony A900. Moreover, the D750 is markedly lighter (16 percent) than the A900. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.
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 the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|Camera Body Specifications|
|Sony A900»||6.1 in||4.6 in||3.2 in||31.6 oz||880||Y||Sep 2008||2,999||-|
|Nikon D750«||5.6 in||4.4 in||3.1 in||26.5 oz||1230||Y||Sep 2014||2,299|
|Canon 5D Mark II« »||6.0 in||4.5 in||3.0 in||30.0 oz||850||Y||Sep 2008||3,499||-|
|Nikon D5« »||6.3 in||6.3 in||3.6 in||49.9 oz||3780||Y||Jan 2016||6,499|
|Nikon D610« »||5.6 in||4.4 in||3.2 in||30.0 oz||900||Y||Oct 2013||1,999|
|Nikon Df« »||5.7 in||4.3 in||2.6 in||26.8 oz||1400||Y||Nov 2013||2,749|
|Nikon D600« »||5.6 in||4.4 in||3.2 in||30.0 oz||900||Y||Sep 2012||2,099||-|
|Nikon D700« »||5.8 in||4.8 in||3.0 in||37.9 oz||1000||Y||Jul 2008||2,999||-|
|Sony A9« »||5.0 in||3.8 in||2.5 in||23.7 oz||650||Y||Apr 2017||4,499|
|Sony A99 II« »||5.6 in||4.1 in||3.0 in||29.9 oz||490||Y||Sep 2016||3,199|
|Sony A6500« »||4.7 in||2.6 in||2.1 in||16.0 oz||350||Y||Oct 2016||1,399|
|Sony RX10 III« »||5.2 in||3.7 in||5.0 in||37.1 oz||420||Y||Mar 2016||1,499||-|
|Sony A7S II« »||5.0 in||3.8 in||2.4 in||22.1 oz||370||Y||Sep 2015||2,999|
|Sony A7 II« »||5.0 in||3.8 in||2.4 in||21.1 oz||350||Y||Nov 2014||1,999||-|
|Sony A99« »||5.8 in||4.4 in||3.1 in||28.6 oz||500||Y||Sep 2012||2,799||-|
|Sony A77« »||5.6 in||4.1 in||3.2 in||25.8 oz||470||Y||Aug 2011||1,999||-|
|Sony A850« »||6.1 in||4.6 in||3.2 in||31.6 oz||880||Y||Aug 2009||1,999||-|
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 D750 was launched at a somewhat lower price (by 23 percent) than the A900, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
Sensor comparison: Sony A900 vs Nikon D750
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. 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 tend to be associated with larger, more expensive camera bodies and lenses.
Both cameras under consideration feature a full frame sensor and have a format factor (sometimes also referred to as "crop factor") of 1.0. Within the spectrum of camera sensors, this places the review cameras among the large-sensor cameras that aim for top notch image quality. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
While the two cameras under review share the same sensor size, the A900 offers a slightly higher resolution of 24.4 megapixel, compared with 24.2 MP of the D750. This megapixel advantage translates into a 0.5 percent gain in linear resolution. On the other hand, these sensor specs imply that the A900 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 5.94μm versus 5.97μm for the D750). Moreover, it should be noted that the D750 is much more recent (by 6 years) than the A900, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of individual pixels.
Consistent information on actual sensor performance is available from DXO Mark for most cameras. 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 D750 offers substantially better image quality than the A900 (overall score 14 points higher). The advantage is based on 1.1 bits higher color depth, 2.2 EV in additional dynamic range, and 1 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.
|Sony A900»||Full Frame||24.4||6048||4032||-||23.7||12.3||1431||79|
|Nikon D750«||Full Frame||24.2||6016||4016||1080/60p||24.8||14.5||2956||93|
|Canon 5D Mark II« »||Full Frame||21.0||5616||3744||1080/30p||23.7||11.9||1815||79|
|Nikon D5« »||Full Frame||20.7||5588||3712||4K/30p||25.1||12.3||2343||88|
|Nikon D610« »||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94|
|Nikon Df« »||Full Frame||16.2||4928||3280||-||24.6||13.1||3279||89|
|Nikon D600« »||Full Frame||24.2||6016||4016||1080/30p||25.1||14.2||2980||94|
|Nikon D700« »||Full Frame||12.1||4256||2832||-||23.5||12.2||2303||80|
|Sony A9« »||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92|
|Sony A99 II« »||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92|
|Sony A6500« »||APS-C||24.0||6000||4000||4K/30p||24.5||13.7||1405||85|
|Sony RX10 III« »||1-inch||20.0||5472||3648||4K/30p||23.1||12.6||472||70|
|Sony A7S II« »||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85|
|Sony A7 II« »||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|Sony A99« »||Full Frame||24.0||6000||4000||1080/60p||25.0||14.0||1555||89|
|Sony A77« »||APS-C||24.0||6000||4000||1080/60p||24.0||13.2||801||78|
|Sony A850« »||Full Frame||24.4||6048||4032||-||23.8||12.2||1415||79|
Many modern cameras are not only capable of taking still images, but can also record movies. The D750 indeed provides for movie recording, while the A900 does not. The highest resolution format that the D750 can use is 1080/60p.
Feature comparison: Sony A900 vs Nikon D750
Apart from body and sensor, cameras can and do differ across a variety of features. The A900 and the D750 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 adjacent table lists some of the other core features of the Sony A900 and Nikon D750 along with similar information for a selection of comparators. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.
|Canon 5D Mark II« »||optical||Y||3.0||920||fixed||n||8000||3.9||n||n|
|Nikon D5« »||optical||Y||3.2||2359||fixed||Y||8000||14.0||n||n|
|Nikon D610« »||optical||Y||3.2||921||fixed||n||4000||6.0||Y||n|
|Nikon Df« »||optical||Y||3.2||921||fixed||n||4000||5.5||n||n|
|Nikon D600« »||optical||Y||3.0||921||fixed||n||4000||5.5||Y||n|
|Nikon D700« »||optical||Y||3.0||922||fixed||n||8000||8.0||Y||n|
|Sony A9« »||3686||n||3.0||1440||tilting||Y||8000||20.0||n||Y|
|Sony A99 II« »||2400||Y||3.0||1229||full-flex||n||8000||12.0||n||Y|
|Sony A6500« »||2300||n||3.0||922||tilting||Y||4000||11.0||Y||Y|
|Sony RX10 III« »||2359||Y||3.0||1229||tilting||n||2000||14.0||Y||Y|
|Sony A7S II« »||2400||n||3.0||1229||tilting||n||8000||5.0||n||Y|
|Sony A7 II« »||2400||n||3.0||1230||tilting||n||8000||5.0||n||Y|
|Sony A99« »||2359||Y||3.0||1229||full-flex||n||8000||6.0||n||Y|
|Sony A77« »||2359||Y||3.0||921||full-flex||n||8000||12.0||Y||Y|
|Sony A850« »||optical||Y||3.0||922||fixed||n||8000||3.0||n||Y|
The D750 is a current model that online retailers, such as amazon, will have in stock. In contrast, the A900 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the A900 was succeeded by the Sony A99.
Review summary: Sony A900 vs Nikon D750
So what conclusions can be drawn? Is the Sony A900 better than the Nikon D750 or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Sony Alpha A900:
- Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
- Sharper images: Has hand-shake reducing image stabilization build-in.
- More heavily discounted: Has been available for much longer (launched in September 2008).
Arguments in favor of the Nikon D750:
- Better image quality: Scores substantially higher (14 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (1.1 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (2.2 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (1 stops ISO advantage).
- Broader imaging potential: Can capture not only stills but also 1080/60p video.
- 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 (1229k vs 922k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Faster burst: Shoots at higher frequency (6 vs 5 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (141x113mm vs 156x117mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 145g or 16 percent) and is thus easier to take along.
- Longer lasting: Gets more shots (1230 versus 880) out of a single battery charge.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was released into a lower priced segment (23 percent cheaper at launch).
- More modern: Reflects 6 years of technical progress since the A900 launch.
If the number of relative strengths (bullet points above) is taken as a guide, the D750 is the clear winner of the contest (15 : 3 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision.
In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the A900 or the D750 handle or perform in practice. 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 why hands-on reviews by experts are important. The following table reports the overall rankings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The detailed reviews can be accessed by clicking on the site logo in the table header.
|Sony A900»||HiRec||HiRec||4.5/5||4/5||5/5||Sep 2008||2,999||-|
|Nikon D750«||HiRec||90/100||4.5/5||5/5||4.5/5||Sep 2014||2,299|
|Canon 5D Mark II« »||91/100||79/100||4/5||5/5||-||Sep 2008||3,499||-|
|Nikon D5« »||-||89/100||4.5/5||5/5||5/5||Jan 2016||6,499|
|Nikon D610« »||HiRec||87/100||4.5/5||4.5/5||4.5/5||Oct 2013||1,999|
|Nikon Df« »||-||81/100||4/5||4/5||4/5||Nov 2013||2,749|
|Nikon D600« »||HiRec||87/100||5/5||4.5/5||4.5/5||Sep 2012||2,099||-|
|Nikon D700« »||89/100||HiRec||4.5/5||5/5||4.5/5||Jul 2008||2,999||-|
|Sony A9« »||HiRec||89/100||5/5||5/5||5/5||Apr 2017||4,499|
|Sony A99 II« »||-||85/100||4.5/5||4.5/5||4.5/5||Sep 2016||3,199|
|Sony A6500« »||HiRec||85/100||4.5/5||5/5||4.5/5||Oct 2016||1,399|
|Sony RX10 III« »||Rec||84/100||4.5/5||4.5/5||4.5/5||Mar 2016||1,499||-|
|Sony A7S II« »||Rec||-||4.5/5||5/5||5/5||Sep 2015||2,999|
|Sony A7 II« »||Rec||82/100||4.5/5||5/5||5/5||Nov 2014||1,999||-|
|Sony A99« »||-||84/100||4.5/5||rev||4.5/5||Sep 2012||2,799||-|
|Sony A77« »||91/100||81/100||-||4.5/5||5/5||Aug 2011||1,999||-|
|Sony A850« »||-||75/100||-||4/5||4.5/5||Aug 2009||1,999||-|
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. 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. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
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