Upload & Sell: Off
BTW, I decided to keep my copy, even with the MFA set at +8. I shot with it at a few different events, thousands of photos, and was more than happy to jettison my heavy brick of a lens (the Canon 24-70mm MKI) afterwards, literally just sold it today to a local buyer.
I got to use the S35 at a cosplay nightclub party (not shooting at F/1.4 exclusively, just real world use) last weekend, and got good results wrt AF performance.
There is a small percentage of shots that were captured with a Sigma 85mm lens, mostly the portrait shots that fill the entire frame/picture. The vast majority were shot with the S35 lens.
What was funny is when I missed AF lock shooting 2 people standing side by side in the frame (the AF point going to a faraway point behind them in between the people), the focus at the faraway was dead-on, not front-focused for far-away shots. The close-in shots (within 10 feet) performance was reliable for the most part as well. Sometimes user-error (me) would cause the thin DOF to leave 1 of 2 people OOF if they were staggered, and not on the same plane of focus, which was understandable, and my fault (just me wanting to shoot wide-open and not thinking when I was shooting 2 people not on the same focal plane).
The sharpness of the lens is really nice. I took a group shot from a good 30 feet away, with people filling the frame from left-to-right edges, each person was in focus, not focused well in the middle, and not-so-well towards the edges (like shots from my zoom lenses would exhibit when I used them). I previously uploaded a 3000x862 version of this group shot (hand-held, 1/125, F/5.6, ISO 200 on a 5D3 body) for the photoshoot participants, but you can check it out as well:
(right-click on the photo image to pick to see the original size uploaded)
I have a bunch of photos to go through from this past weekend, but initial review of the photos tells me there are a lot of sharp photos, mostly shot F/1.6-F/2.5, and some at narrower aperture when the circumstances dictated deeper DOF for group shots.
I'm glad I have this lens in my camera bag now.