I'm curious. What effect does the position of the distance button(Full vs. Infinity)have when I am manually focusing? Example: If I manually focus at something 6 feet away but my lens was (forgetfully)in the Infinity mode am I losing anything in terms a sharpness or clarity?
#1. "RE: Focus Distance Button" | In response to Reply # 0aolander Nikonian since 15th Sep 2006Fri 05-Apr-13 09:51 PM | edited Fri 05-Apr-13 09:53 PM by aolander
I assume you're talking about your 70-200mm. The Full position allows the lens to focus through its full range from infinity down to 1.4 meters. The Infinity-2.5m position only allows the lens to focus from infinity down to 2.5m, i.e. it doesn't allow the lens to close focus. You can't focus to 6' when the lens is set to Infinity-2.5m.* It has no effect on sharpness or quality or really nothing to do with that, it just limits the range. (If you take a picture at 6' it won't be in focus so in effect it does affect the quality. )
*I don't own this lens so maybe manual focus will override the limiter switch, I don't know.
#3. "RE: Focus Distance Button" | In response to Reply # 1Fri 05-Apr-13 10:42 PM
That makes sense. I should've reviewed my Nikon paperwork but I can't get to it until next week and am hoping to get some shots of the Carlsbad 5000 this weekend. I will be using using AF and manual focus, probably going back and forth quite a bit. Both my 70-200 and my 300mm F4.0 have the switch. Thanks Alan.
#2. "RE: Focus Distance Button" | In response to Reply # 0
I should've specified the lens. My 70-200 and my 300mm F4. both have the distance switch. I also should've revisited my Nikon paperwork but I can't get to it until next week. Thanks for the answer, that makes sense. Hoping to get some pics at the Carlsbad 5000 this weekend. Thanks Alan.
#4. "RE: Focus Distance Button" | In response to Reply # 2jrp Charter MemberSat 06-Apr-13 01:40 AM | edited Wed 10-Apr-13 04:55 AM by jrp
It serves the purpose to speed up AF when limiting the range.
If you will be MF-ing, there is no need to use it.
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