Which full-frame mirrorless camera was first available in the market?
Sony was the first to introduce a full-frame mirrorless camera, the α7, in 2013.
Sony α7 in 2013
Instruction: Which full-frame mirrorless camera was first available in the market?
Context: Sony was the first to introduce a full-frame mirrorless camera, the α7, in 2013.
Response: Sony α7 in 2013