A long time ago, when I sold Minolta cameras, we had the 24mm VFC. It's straightforward to use, as I recall. The dial adjusts the degree of field curvature, to use it as a straight 24, you use the straight field setting. You can actually see the field curvature change, through the viewfinder, as you dial-in the different settings. The settings are also listed on the depth-of-field scale, so you can scale-focus (at the different settings) with this lens. Very nice lens, quite unique, very rare and of course very expensive.
Originally Posted by ItsReallyDarren
Anybody have any experience with the 24mm 2.8 VFC? I picked one up in a yard sale a while ago and have used it as a 24. Haven't really figured out how the variable field focus system works.