suggest manual lens for milky way

Started Jun 21, 2013 | Discussions thread
kcire
New MemberPosts: 15
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Re: suggest manual lens for milky way
In reply to Astrophotographer 10, Jun 21, 2013

i'm using f/2.8,  iso 1600 / 3200 and 20-30 seconds

the peaking focus and mf assist helps a lot at the first 30 minutes, but after I change focus to a FG / POI, then the problem begins. It can't infinity again for the rest time. is it because low temperature?

i don't understand why e-mount lens focus ring has neverending turn.

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