I used the SL2 in multiexposure (189Mpx) mode with a Summicron 50mm SL at f2.2. The edges do get softer (not entirely clear that this is the lens or atmosphere or the way that the SL2 takes / stitches such images). Topaz Sharpen AI does a reasonable job at cleaning up the deficiencies. (I have probably slightly overcooked it, but may well have started with the auto settings.). [No interest to declare; paid for the product (v 3.3.5).]