Tested: Sigma FP with TTArtisan M21mm f/1.5 lens July 8, 2020 reviews 0 Comments Shoten published this test done with the new TTArtisan M21mm f/1.5 lens. Check out the images on their website! Andreapazzo **This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases **This post contains affiliate links to eBay and I will be compensated if you make a purchase after clicking through my links. As an eBay Associate I earn from qualifying purchases