Sony A7 Comparison Review

The Sony Alpha A7 is a mirrorless interchangeable lens camera that was announced in October 2013 and is equipped with a full frame sensor. It offers a resolution of 24 megapixel.

Body comparison with a credit card

The side-by-side display below illustrates the physical size of the Sony A7 vis-à-vis a credit card. Three consecutive perspectives from the front, the top, and the back are presented. All width, height and depth measures are rounded to the nearest millimeter.

The table below summarizes the key physical specs of the Sony A7 alongside a set of comparators. If you want to review a camera pair side-by-side, just select a right-side 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 comparisons there.

Camera Body Specifications

	Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life (CIPA)	Weather Sealing (yes/no)	Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Sony A7	127 mm	94 mm	48 mm	474 g	340	Y	Oct 2013	1,699	-		Sony A7
	Nikon D610« »	141 mm	113 mm	82 mm	850 g	900	Y	Oct 2013	1,999			Nikon D610
	Panasonic GH4« »	133 mm	93 mm	84 mm	560 g	500	Y	Feb 2014	1,499	-		Panasonic GH4
	Sony A6300« »	120 mm	67 mm	49 mm	404 g	400	Y	Feb 2016	999	-		Sony A6300
	Sony A6500« »	120 mm	67 mm	53 mm	453 g	350	Y	Oct 2016	1,399			Sony A6500
	Sony A7 II« »	127 mm	96 mm	60 mm	599 g	350	Y	Nov 2014	1,999	-		Sony A7 II
	Sony A7S« »	127 mm	94 mm	48 mm	489 g	380	Y	Apr 2014	2,499	-		Sony A7S
	Sony A5100« »	110 mm	63 mm	36 mm	283 g	400	n	Aug 2014	549			Sony A5100
	Sony A7R« »	127 mm	94 mm	48 mm	465 g	340	Y	Oct 2013	2,299	-		Sony A7R
	Sony RX1R« »	113 mm	65 mm	70 mm	482 g	270	n	Jun 2013	2,799	-		Sony RX1R
	Sony RX1« »	113 mm	65 mm	70 mm	482 g	270	n	Sep 2012	2,799	-		Sony RX1
Convert to Imperial

The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The Sony A7 was launched in the US market at a price of $1,699. 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 with a 35mm slide

The size of the imaging sensor is a crucial determinant 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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

The Sony A7 features a full frame sensor and has a format factor (sometimes also referred to as "crop factor") of 1.0. Within the spectrum of camera sensors, this places the Sony A7 among the large-sensor cameras that aim for top notch image quality.

Consistent information on actual sensor performance is available from DXO Mark for most cameras. 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. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The adjacent table lists some of the other core features of the Sony A7 along with similar information for a selection of comparators. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

Expert reviews

While the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the A7 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. This is why expert reviews 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 full reviews are available by clicking on the site logo in the table header.

Review Scores

	Camera Model						Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Sony A7	HiRec	80/100	5/5	4.5/5	5/5	Oct 2013	1,699	-		Sony A7
	Nikon D610« »	HiRec	87/100	4.5/5	4.5/5	4.5/5	Oct 2013	1,999			Nikon D610
	Panasonic GH4« »	HiRec	85/100	5/5	5/5	5/5	Feb 2014	1,499	-		Panasonic GH4
	Sony A6300« »	Rec	85/100	5/5	5/5	5/5	Feb 2016	999	-		Sony A6300
	Sony A6500« »	HiRec	85/100	4.5/5	5/5	4.5/5	Oct 2016	1,399			Sony A6500
	Sony A7 II« »	Rec	82/100	4.5/5	5/5	5/5	Nov 2014	1,999	-		Sony A7 II
	Sony A7S« »	-	86/100	4.5/5	4.5/5	5/5	Apr 2014	2,499	-		Sony A7S
	Sony A5100« »	Rec	-	4.5/5	4.5/5	5/5	Aug 2014	549			Sony A5100
	Sony A7R« »	HiRec	82/100	4.5/5	5/5	5/5	Oct 2013	2,299	-		Sony A7R
	Sony RX1R« »	-	-	4/5	rev	4.5/5	Jun 2013	2,799	-		Sony RX1R
	Sony RX1« »	-	79/100	4/5	4.5/5	4.5/5	Sep 2012	2,799	-		Sony RX1

The review scores listed above should be treated with care, though. The ratings are only valid when refering to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Camera to camera comparisons

In case you are interested in seeing how this camera compares another one, 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. If you do not see the camera that you are looking for, please contact me, and I will try to locate and add the respective data to the application.

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