I'm honestly pulling my hair out trying to decide which lens to dump my savings into. I have this gallery showing in Berlin coming up in three weeks and I need absolute, bite-your-head-off sharpness for these massive 40x60 prints. I've been obsessing over the Leica 35mm f/2 APO-Summicron-SL but then I started looking at the Panasonic Lumix S Pro 50mm f/1.4 and now I'm just confused.

My logic was that the APO designation on the Leica should mean it's the undisputed king of micro-contrast and edge-to-edge clarity, especially for the architectural stuff I do. But then I see these MTF charts and some guy on YouTube claiming the Panasonic 50mm is actually sharper wide open and costs literally half the price. I've also got the Sigma 35mm f/1.2 Art in the back of my mind because people say it's a resolution monster, but it's so heavy and I'm worried it lacks that specific pop the Leica glass is known for.

Budget is capped at around $5,000 so if I go with the Summicron I'm basically broke and probably buying used off eBay. It's so frustrating because every review contradicts the last one. One person says the APO is the sharpest lens ever made, period, and then another says the corners are soft compared to the S Pro. I just need the absolute sharpest option for a high res sensor, which one actually delivers the most detail when you're pixel peeping at 200%...