Originally Posted by GaryLH
I forgot to mention that according to an interview awhile back, sigma mentioned that they do all their final lens testing on a rig that uses a sigma sensor, whether we are talking about Nikon or canon or m43 or e mount or their own sigma mount lenses.
They do, and it's the one thing that bothers me about their process.
The art lenses are fantastic, they do need calibration before use, and honestly it's a small price to pay, I do wonder if factory calibrating them to a multi layered sensor for end use on a bayer sensor leads to some of the need for tweaking.
That's purely layman's speculation, and I actually think the dock is great in use, and the lenses are spectacular, it's just a query.