Quote:
Originally Posted by niko
Hi everyone,
So - looking for a fixed focal length (or short focal length) lens that focuses on infinity without having to step it back.
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Not sure you'll find one Niko. I've heard from many that the reason they go beyond infinity at the final stop is to allow for expansion/contraction.
I've been using the mini-Bahtinovs for ages on my camera lenses, and with live view on the 5D-II it works very well as you can dial in focus on a bright star in seconds as you watch. The 350D, without it, will still work, but you need to expose for at least 10 secs at ISO800 on a fairly bright star to see the diffraction pattern well - which you need to center in frame as best you can so that zooming in to inspect the result doesn't require you to jog the object into view all the time.