I\'m using a couple of AF-confirm adapters from BIG-IS, both older non-programmable and the later programmable type.
Up to f/2 (or f/1.7 / 1.8) depending on the lens, I am getting very accurate results, even close to MFD. But the rate drops off using and I need to use \"bracket\" focus when using apertures like f/1.4 or even f/1.2 near MFD. As the range gets bigger, the easier it gets. At a couple of meters distance even f/1.2 isn\'t as big an issue.
I prefer LV for wide open shots on very fast lenses.
But in short, I\'d get a chipped type, which IMHO gives you a little more versatility.
Ruy
Oct 30, 2009 at 09:02 AM
Previous versions of rhorta's message #7710102 « Lens adapter: AF Confirm or not? »
