Started Dec 4, 2011 | Discussions thread
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Contributing MemberPosts: 835
Dec 4, 2011

I fess up, i am an engineer, not an artist... as such I am curious from scientific point: what happens if you attach TC20 to TC20 to a lens, say 70-200VR2...

Theoretically you should get 280-800mm f/11.2 zoom lens...

Will it work?
Will it focus? It has to still focus manually at some distance...
Will IQ be crap or just a bit worse than 70-200 + TC20?

Any one working for a camera store and can try this out?

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