From: "Rod Hefford" Subject: EOS 28-70 f2.8L
The above lens has a switch on the side that is either 1.5m - infinity or 3m - infinity.
The documentation that came with the lens is unhelpful, what does this switch do?
If you are going to be taking distance shots only, placing the switch on the "3m-Infinity" setting reduces the AF time - or so it says in my documentation for another lens with a similar switch.
Ron (gto49)
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