Hi,
I've been doing some experiments in astrophotography with my 400D and both
the EF-S 18-55 kit lens and my EF 90-300 USM. Problem is, neither lens has a
focus gauge, so it's hard to get the lens focussed at infinity properly - most
of the photos I take end up with unfocussed round blobs instead of pin-sharp
stars. I noticed that the EOS FAQ says some lenses can focus past infinity
(see http://photonotes.org/articles/beginner-faq/lenses.html) - does this
apply to the newer EF and EF-S lenses too?
I also noticed that the 400D stores the focus distance in the EXIF metadata
- does anyone know if it's possible to get that info up on the display while
shooting?
Thanks.
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