I am quite sure the SL2 has a 3x4 crop mode which also masks the viewfinder.I just went though this same path. I regularly print 2’x3’ and occasional long panorama’s 2’ high from stitched shots. I had Hasselblad X1D2 and then up graded to a Fuji GFX 100S. I had this for 1 1/2 years. I loved the files but really struggled with the color and ergonomics. I have had Leica M’s for a while and had a M10M with the GFX and loved the small M body and lenses. I decided to try the M11 as a”high end” color camera and used the GFX 100S along side the M11 shooting and printing similar scenes, both landscapes and people images. In the end I sold all the Fuji gear. Looking at the prints clients and friends really could not tell the difference but tended to like the Leica images more. I needed an AF camera and bought a used SL2 and 24-90 SL lens. I am very happy now and the only thing I miss is the 3x4 aspect ratio of MF. For the first time my GAS in under control…. Until the S4 comes out…..