The Sony α7, α7R and α7S (the α is sometimes spelled out as Alpha) are three closely related full-frame mirrorless interchangeable-lens cameras. The first two were announced on 16 October 2013 and the third on 6 April 2014. Externally they are identical except for the model number. They are Sony's first full-frame mirrorless interchangeable lens cameras and share the E-mount with the company's smaller sensor NEX series.
The α7 II was announced in November 2014, and is the first in the family to revise the original body and ergonomics. The α7 series is targeted at experienced users, enthusiasts and professionals. The α7R II was announced in June 2015.
The Sony α7 and α7R have the model numbers ILCE-7 and ILCE-7R respectively. In addition, the α7S, the α7 II, and the α7R II have the model numbers ILCE-7S, ILCE-7M2, and ILCE-7RM2. Sony's new model naming prefix strives to unify model names. "ILC" indicates Interchangeable Lens Camera followed by an indicator of A-mount "A" or E-mount "E".Pre-announcement rumours speculated that the new camera would be named "Sony NEX-9".Although the α7 series uses full-frame sensors and has a DSLR-shaped design, α7 cameras are smaller and weigh less than Olympus OM-D E-M1 with its small micro four thirds sensor and can also be compared with the lightest full-frame DSLR. Compared to the smallest and lightest APS-C DSLR Canon EOS 100D, the α7 is 67 grams heavier and a bit larger, but the thickness is only two thirds of Canon's. The α7 price is significantly lower than a comparative full-frame DSLR price, but still higher than that of a low or mid-end compact camera price. Compared to the Nikon D800E, the weight of Sony α7R is only about a half and the price is about two-thirds. Purchase a Ilce-7sThe text above came from the ILCE-7S article on Wikipedia, licensed under the CC-BY-SA license.
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