Fixing focus

Started 3 weeks ago | Discussions thread
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Kiwisnap Contributing Member • Posts: 906
Fixing focus

Q: if you have a manual focus lens and you focus it to infinity and then fix the focus ring (say for the sake of argument with glue) so it cannot move, will that lens always be correctly at infinity each time you mount it?

I ask this as I am starting to do a fair bit of astro and focusing is tricky with the Olympus lenses and magnification when the focus target is a star!

I was wondering about getting a cheaper MF  wide-angle lens, focusing it in daylight at infinity then fixing it so that every time I get it out for astro it would be focused correctly.

 Kiwisnap's gear list:Kiwisnap's gear list
Olympus OM-D E-M1X Olympus Zuiko Digital 1.4x Teleconverter EC-14 Olympus 40-150mm F2.8 Pro Olympus 7-14mm F2.8 Pro Olympus 12-100mm F4.0 +1 more
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