sharpeness of stars on Nikon 14-24mm 2.8 at infinity

Started Jan 9, 2013 | Discussions thread
ForumParentFirstPreviousNextNext unread
Flat view
mike in london
Senior MemberPosts: 1,360Gear list
Like?
sharpeness of stars on Nikon 14-24mm 2.8 at infinity
Jan 9, 2013

just got my new Nikon 14-24mm 2.8 ready for going to Norway in 5 weeks and went outside to test its focus on infinity (manual focus) as I will be photographing the stars and northern lights there and tonight was the first starry night since I got it.

I started photographing everything on infinity but then I checked focus as much as i could in camera out in the field but optimum sharpness of stars didn't seem to be at full infinity, in fact i did some shots with the dial turned gradually further from infinity and it seemed to get sharper a few mm off from infinity then got softer again

is this normal?

or should i get it checked out?

Mike

-- hide signature --

www.mikecurryphotography.com

 mike in london's gear list:mike in london's gear list
Nikon D300S Nikon D810 Nikon AF-S Nikkor 14-24mm f/2.8G ED Nikon AF-S Nikkor 24-70mm f/2.8G ED +1 more
ForumParentFirstPreviousNextNext unread
Flat view
ForumParentFirstPreviousNextNext unread
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow