This is the first leaked image of the new Sigma 35mm f/1.4 FE lens that will be announced on April 27. It will cost $899 which is $500 cheaper than the Sony 35mm GM. Another source previously told us this about the new lens:
Compare to Sony GM,At the center of resolution, it is good as Sony GM.
At the corner of resolution,Sony GM is better.
AF speed is slower than Sony GM.
Sigma Art is much lighter and cheaper.
Due to issue of 28-70 Art, Announcement is delayed.
Sigma will start to sell this new lens July or June in this year.