TC-17 vs TC-20 on 70-200 VR ?

Started Jun 7, 2007 | Discussions thread
ForumParentFirstPreviousNextNext unread
Flat view
Mike Neary
Veteran MemberPosts: 3,355
Like?
TC-17 vs TC-20 on 70-200 VR ?
Jun 7, 2007

I have the 70-200 VR and TC-17EII. I'm thinking of picking up a TC-20E for more reach when the light is good. Would like to get a longer lens but can't afford one right now...

My question is - would there be an improvement in IQ at 400mm with TC-20E vs cropping the 340mm shot with TC-17E ? Or does the TC-20 degrade IQ so much on a 10 MP body that I get the same resolution in the cropped shot ?

Has anyone done this comparison ?

Thanks so much

Mike

ForumParentFirstPreviousNextNext unread
Flat view
Post (hide subjects)Posted by
ForumParentFirstPreviousNextNext unread
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow