So Ive been shooting on the L-mount system for about two years now, mostly using the S5II and some of the smaller primes for travel, but Ive run into a bit of a wall lately. I have this big gallery commission coming up in Seattle this fall and Im going to be printing these landscapes and environmental portraits at 40x60 inches. My current kit is decent but when I start pixel peeping at those sizes, the 24-105 just falls apart at the edges and even my 50mm 1.8 feels a little soft wide open.

My logic was to just grab the Sigma 35mm f1.2 DG DN because everyone says its a monster, but then I started looking at the Sigma 85mm f1.4 DG DN and the charts on that thing are actually insane. It seems like it might even out-resolve the Leica glass in some cases? But then I get stuck thinking about the Panasonic 50mm f1.4 S Pro. That thing is huge and expensive, but people swear the micro-contrast gives it an edge that doesnt show up in a standard resolution test.

Ive got a budget of around $2500 for this one hero lens. Im really looking for that clinical, biting sharpness across the entire frame because these prints are going to be under some heavy gallery lighting. I was also looking at the Leica Summicron-SL 35mm but Im wondering if Im just paying for the red dot at that point or if it actually holds more detail than the Sigma 35mm f1.4 DG DN Art.

Its a weird spot to be in because usually I dont care this much about tiny details, but this specific project requires it. Is the Sigma 105mm f2.8 Macro actually the sharpest thing we can get for this mount or is there a prime Im overlooking that handles 60MP+ sensors better? Just trying to figure out which glass actually delivers the most raw resolving power right now...