Quote:
Originally Posted by rastis95
Thanks for the replies, i was starting to think that it might be the lenses. Is there any tricks of the trade to achieving sharp focus with a dslr, at present i use live view and expand 10x on a bright star. Looks good on the camera but once its on the computer it just doesn't seem spot on.
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Try to use FocusAssist and Magnifier (both are freeware).
http://www.xmission.com/~jstanley/focusassist/
http://www.iconico.com/magnifier/
Sharpness is also affected by the lens quality and f number.. try to close the lens 1-2 stops - this will require 2-4x longer exposure time for the same effect, but it will be worth it in terms of sharpness.