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...
Just saw this thread and honestly youre right to be cautious about those edge details for 60 inch prints. If you want the safest, most reliable choice for pure resolving power, the Sigma 85mm f1.4 DG DN Art is basically the gold standard right now. Its incredibly sharp even wide open and the technical tests really back that up. If youre worried about the rendering for those Seattle landscapes tho, the Panasonic Lumix S Pro 50mm f1.4 is a very safe investment because its built like a tank and holds its contrast across the whole frame. It might be more reliable for professional gallery work than some of the lighter primes. The Sigma 105mm f2.8 DG DN Macro Art is technically sharper on paper but the focus is slower... maybe not ideal for portraits. Stick with the 85mm for that clinical edge.
You gotta look at the APO glass for those huge prints! Quick thoughts:
- Leica APO-Summicron-SL 35mm f2 ASPH is the absolute gold standard for edge-to-edge resolution. Its totally clinical and perfect for gallery work!
- Sigma 35mm f1.4 DG DN Art is way more affordable and almost as sharp in the center. Its a fantastic value choice! Leica is super expensive but honestly worth it for 60-inch prints!
Honestly, I wish I could say that throwing money at the most expensive glass solves everything, but I learned the hard way that it isnt always that simple. I spent a fortune on high-end primes last year expecting that perfect gallery look for a similar project, and I ran into some serious focus breathing and field curvature issues that ruined more shots than I care to admit. It was pretty frustrating to realize that even the most hyped lenses can have quirks when you push them to the absolute limit for huge prints.
- Dont fall into the trap of thinking clinical sharpness is the only metric. Even with insane glass, atmospheric haze and micro-vibrations at those resolutions become a bigger enemy than lens softness.
- Be careful with those heavy lenses; balancing them on a standard tripod for long exposures in the field is a total pain.
- Test your specific copy before the big day, as I had issues with decentering on a few lenses that were supposed to be perfect. Take it from me, rent before you commit. You dont want to be disappointed when you see those 60-inch files for the first time.