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Can't get sharp Focus with DSLR Lens
Hi guys,
I've been struggling to get really nice sharp focus with my 55-250mm DSLR lens.
It always seems to want to leave a small tail on the stars. I've attached a pic to show what I mean. (it was cropped a bit due to artifacts from the stacking process).
I use live view to focus the stars manually. What I want to know is this just an inherent problem with the lens, or is there something else I can do to achieve better focus?
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