Sony A7 versus Sony A77 II
The Sony Alpha A7 and the Sony Alpha SLT-A77 II are two enthusiast cameras that were announced, respectively, in October 2013 and May 2014. The A7 is a mirrorless interchangeable lens camera, while the A77 II is a DSLR. The cameras are based on a full frame (A7) and an APS-C (A77 II) sensor. Both cameras offer a resolution of 24 megapixel. 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 A7 vs Sony A77 II
The physical size and weight of the Sony A7 and the Sony A77 II are illustrated in the side-by-side display below. Three consecutive perspectives from the front, the top, and the back are presented. All size dimensions are rounded to the nearest millimeter. If you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left side – the A7 – 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 Sony A77 II is notably larger (25 percent) than the Sony A7. Moreover, the A77 II is substantially heavier (36 percent) than the A7. 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 A7 (⇒ rgt)||5.0 in||3.7 in||1.9 in||16.7 oz||340||YES||2013||1,699||discont.||check|
|Sony A77 II (⇒ lft)||5.6 in||4.1 in||3.2 in||22.8 oz||480||YES||2014||1,199||latest||check|
|Nikon D7200 (⇒ lft | rgt)||5.4 in||4.2 in||3.0 in||27.0 oz||1110||YES||2015||1,199||discont.||check|
|Nikon D610 (⇒ lft | rgt)||5.6 in||4.4 in||3.2 in||30.0 oz||900||YES||2013||1,999||latest||check|
|Panasonic GX8 (⇒ lft | rgt)||5.2 in||3.1 in||2.5 in||17.2 oz||330||YES||2015||1,199||discont.||check|
|Panasonic GH4 (⇒ lft | rgt)||5.2 in||3.7 in||3.3 in||19.8 oz||500||YES||2014||1,499||discont.||check|
|Sony A9 (⇒ lft | rgt)||5.0 in||3.8 in||2.5 in||23.7 oz||650||YES||2017||4,499||latest||check|
|Sony A6300 (⇒ lft | rgt)||4.7 in||2.6 in||1.9 in||14.3 oz||400||YES||2016||999||discont.||check|
|Sony A6500 (⇒ lft | rgt)||4.7 in||2.6 in||2.1 in||16.0 oz||350||YES||2016||1,399||latest||check|
|Sony A7 II (⇒ lft | rgt)||5.0 in||3.8 in||2.4 in||21.1 oz||350||YES||2014||1,999||discont.||check|
|Sony A7S (⇒ lft | rgt)||5.0 in||3.7 in||1.9 in||17.2 oz||380||YES||2014||2,499||discont.||check|
|Sony A5100 (⇒ lft | rgt)||4.3 in||2.5 in||1.4 in||10.0 oz||400||no||2014||549||latest||check|
|Sony A7R (⇒ lft | rgt)||5.0 in||3.7 in||1.9 in||16.4 oz||340||YES||2013||2,299||discont.||check|
|Sony RX1R (⇒ lft | rgt)||4.4 in||2.6 in||2.8 in||17.0 oz||270||no||2013||2,799||discont.||check|
|Sony RX1 (⇒ lft | rgt)||4.4 in||2.6 in||2.8 in||17.0 oz||270||no||2012||2,799||discont.||check|
|Sony A77 (⇒ lft | rgt)||5.6 in||4.1 in||3.2 in||25.8 oz||470||YES||2011||1,999||discont.||check|
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 A77 II was launched at a markedly lower price (by 29 percent) than the A7, 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: Sony A7 vs Sony A77 II
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 tend to be associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Sony A7 features a full frame sensor and the Sony A77 II an APS-C sensor. The sensor area in the A77 II is 57 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Even though the A7 has a larger sensor, both cameras offer the same resolution of 24 megapixel. This implies that the A7 has a lower pixel density and larger individual pixels (with a pixel pitch of 5.97μm versus 3.91μm for the A77 II), which gives it a potential advantage in terms of light gathering capacity. It should, however, be noted that the A77 II is a somewhat more recent model (by 6 months) than the A7, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Sony A7 (⇒ rgt)||Full Frame||24.0||6000||4000||1080/60p||24.8||14.2||2248||90|
|Sony A77 II (⇒ lft)||APS-C||24.0||6000||4000||1080/60p||-||-||-||-|
|Nikon D7200 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||24.5||14.6||1333||87|
|Nikon D610 (⇒ lft | rgt)||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94|
|Panasonic GX8 (⇒ lft | rgt)||Four Thirds||20.2||5184||3888||4K/30p||23.5||12.6||806||75|
|Panasonic GH4 (⇒ lft | rgt)||Four Thirds||15.9||4608||3456||4K/30p||23.2||12.8||791||74|
|Sony A9 (⇒ lft | rgt)||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92|
|Sony A6300 (⇒ lft | rgt)||APS-C||24.0||6000||4000||4K/30p||24.4||13.7||1437||85|
|Sony A6500 (⇒ lft | rgt)||APS-C||24.0||6000||4000||4K/30p||24.5||13.7||1405||85|
|Sony A7 II (⇒ lft | rgt)||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|Sony A7S (⇒ lft | rgt)||Full Frame||12.0||4240||2832||1080/60p||23.9||13.2||3702||87|
|Sony A5100 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||23.8||12.7||1347||80|
|Sony A7R (⇒ lft | rgt)||Full Frame||36.2||7360||4912||1080/60p||25.6||14.1||2746||95|
|Sony RX1R (⇒ lft | rgt)||Full Frame||24.0||6000||4000||1080/60p||25.0||13.6||2537||91|
|Sony RX1 (⇒ lft | rgt)||Full Frame||24.0||6000||4000||1080/60p||25.1||14.3||2534||93|
|Sony A77 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||24||13.2||801||78|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, and both provide the same movie specifications (1080/60p).
Feature comparison: Sony A7 vs Sony A77 II
Beyond body and sensor, cameras can and do differ across a range of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the A7 offers a slightly higher resolution than the one in the A77 II (2400k vs 2359k dots). The table below summarizes some of the other core capabilities of the Sony A7 and Sony A77 II in connection with corresponding information for a sample of similar cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.
|Sony A7 (⇒ rgt)||2400||no||3.0||1230||tilting||no||8000||5.0||no||no|
|Sony A77 II (⇒ lft)||2359||YES||3.0||1229||full-flex||no||8000||12.0||12||YES|
|Nikon D7200 (⇒ lft | rgt)||optical||YES||3.2||1229||fixed||no||8000||6.0||12||no|
|Nikon D610 (⇒ lft | rgt)||optical||YES||3.2||921||fixed||no||4000||6.0||12||no|
|Panasonic GX8 (⇒ lft | rgt)||2360||no||3.0||1040||swivel||YES||8000||10.0||no||YES|
|Panasonic GH4 (⇒ lft | rgt)||2359||no||3.0||1036||swivel||YES||8000||12.0||17||no|
|Sony A9 (⇒ lft | rgt)||3686||no||3.0||1440||tilting||YES||8000||20.0||no||YES|
|Sony A6300 (⇒ lft | rgt)||2300||no||3.0||922||tilting||no||4000||11.0||6||no|
|Sony A6500 (⇒ lft | rgt)||2300||no||3.0||922||tilting||YES||4000||11.0||6||YES|
|Sony A7 II (⇒ lft | rgt)||2400||no||3.0||1230||tilting||no||8000||5.0||no||YES|
|Sony A7S (⇒ lft | rgt)||2400||no||3.0||921||tilting||no||8000||5.0||no||no|
|Sony A5100 (⇒ lft | rgt)||no||no||3.0||922||tilting||YES||4000||6.0||4||no|
|Sony A7R (⇒ lft | rgt)||2400||no||3.0||1230||tilting||no||8000||4.0||no||no|
|Sony RX1R (⇒ lft | rgt)||no||no||3.0||1229||fixed||no||4000||5.0||6||no|
|Sony RX1 (⇒ lft | rgt)||no||no||3.0||1229||fixed||no||4000||5.0||6||no|
|Sony A77 (⇒ lft | rgt)||2359||YES||3.0||921||full-flex||no||8000||12.0||12||YES|
The A77 II is a current model that online retailers, such as amazon, will have in stock. In contrast, the A7 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the A7 was succeeded by the Sony A7 II.
Review summary: Sony A7 vs Sony A77 II
So what conclusions can be drawn? Is the Sony A7 better than the Sony A77 II or vice versa? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Sony Alpha A7:
- Better low-light imaging: Features bigger pixels on a larger sensor for better high-ISO images.
- More compact: Is smaller (127x94mm vs 143x104mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 173g or 27 percent) and hence easier to carry around.
- More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
- More heavily discounted: Has been on the market for longer (launched in October 2013).
Advantages of the Sony Alpha SLT-A77 II:
- Easier setting verification: Has a control panel on top to check shooting parameters.
- More flexible LCD: Has full-flex screen for odd-angle shots in portrait or landscape orientation.
- Faster burst: Shoots at higher frequency (12 vs 5 flaps/sec) to capture the decisive moment.
- Longer lasting: Gets more shots (480 versus 340) out of a single battery charge.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.
- More affordable: Was introduced into a lower priced category (29 percent cheaper at launch).
- More modern: Was introduced somewhat (6 months) more recently.
If the count of individual advantages (bullet points above) is taken as a guide, the A77 II emerges as the winner of the match-up (8 : 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.
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 handling experience and imaging performance when actually working with the A7 or the A77 II. 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 A7 (⇒ rgt)||HiRec||80/100 Silver||5/5||4.5/5||5/5||2013||1,699||discont.||check|
|Sony A77 II (⇒ lft)||-||80/100 Silver||4.5/5||4/5||5/5||2014||1,199||latest||check|
|Nikon D7200 (⇒ lft | rgt)||HiRec||84/100 Silver||4.5/5||4/5||4.5/5||2015||1,199||discont.||check|
|Nikon D610 (⇒ lft | rgt)||HiRec||87/100 Gold||4.5/5||4.5/5||4.5/5||2013||1,999||latest||check|
|Panasonic GX8 (⇒ lft | rgt)||Rec||82/100 Silver||4.5/5||5/5||4.5/5||2015||1,199||discont.||check|
|Panasonic GH4 (⇒ lft | rgt)||HiRec||85/100 Gold||5/5||5/5||5/5||2014||1,499||discont.||check|
|Sony A9 (⇒ lft | rgt)||HiRec||89/100 Gold||5/5||5/5||5/5||2017||4,499||latest||check|
|Sony A6300 (⇒ lft | rgt)||Rec||85/100 Gold||5/5||5/5||5/5||2016||999||discont.||check|
|Sony A6500 (⇒ lft | rgt)||HiRec||85/100 Silver||4.5/5||5/5||4.5/5||2016||1,399||latest||check|
|Sony A7 II (⇒ lft | rgt)||Rec||82/100 Silver||4.5/5||5/5||5/5||2014||1,999||discont.||check|
|Sony A7S (⇒ lft | rgt)||-||86/100 Gold||4.5/5||4.5/5||5/5||2014||2,499||discont.||check|
|Sony A5100 (⇒ lft | rgt)||Rec||-||4.5/5||4.5/5||5/5||2014||549||latest||check|
|Sony A7R (⇒ lft | rgt)||HiRec||82/100 Gold||4.5/5||5/5||5/5||2013||2,299||discont.||check|
|Sony RX1R (⇒ lft | rgt)||-||-||4/5||reviewed||4.5/5||2013||2,799||discont.||check|
|Sony RX1 (⇒ lft | rgt)||-||79/100 Gold||4/5||4.5/5||4.5/5||2012||2,799||discont.||check|
|Sony A77 (⇒ lft | rgt)||91/100||81/100 Silver||-||4.5/5||5/5||2011||1,999||discont.||check|
Care should be taken when interpreting the review scores above, though. The ratings are only valid when refering 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.
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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. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If you do not see the camera that you are looking for, please send me an email, and I will try to locate and add the respective data to the application.
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