Just joined the forum, so this is my first posting -
I currently have a Canon 24-105 F/4 IS USM L, a 100mm F/2.8 IS USM L Macro and a 70-200 F4 IS USM. I'm now looking for either a 35mm or a 50mm prime. I'm leaning towards a 35mm F2 or F/1.4 Zeiss ZE ir a 35mm F/1.4L. I'm not to keen on the 50mm F/1.4 or 1.8 Canon lens, although the 40mm F/2.8 pancake looks pretty cool. However, with that said, Since my main walkaround lens is an F/4, I would prefer an F/1.4 or an F/2 at minimum (ideally).
Regarding a manual focus lens, I looked through the manual and there really isn't very much on using a true MF lens on the 5D Mark III.
Since the 5D Mark III does not have interchangeable screens, do I just focus until the image on the screen looks clear? What about the focus indicator red/green dot? Does that work?
Any recommendations on one of these lenses? Is there a write-up anywhere on how to focus a manual focus lens properly? If it is just too much of a pain to go that route, perhaps the AF lens is the way to go?
I've tried most of the tricks, split prisms, etc. For critical focus, I have luck only with liveview and 10X magnification. The focus lights have too much play in them, I prefer a much finer adjustment than just turning the light on or off. Same with split prism, not accurate enough for me.
My criteia is that I want manual focus to be as good or better than autofocus, and I have seldom achieved that except using live view and a rock solid tripod. In bright sun, I use a cloth over my head to be able to see the screen.
Do yourself a favor. Buy a nice old Nikon 50mm lens and a fotodiox adapter and experiment. You are going to learn about a lot of things you haven't asked, but need to know.
If you can master it, your ready to spend money on the Zeiss.