>I can tell you my own experience. I've used the TC-17 with >my 70-200 VRI on my D300 for a long time and really liked the >combo for its versatility. It worked well on the DX body as >long as I stopped down to f/6.3 or so. Then I started using >the combo on my D800 and I no longer like it. The TC-17 kills >the images' contrast. Shooting similar subjects with the TC >taken off just underscores how much the image contrast suffers >when it's used. > >So I too have been considering selling my TC-17. I just don't >want to let it go since it may prove useful if I buy some big >glass down the road.
I can't dispute your results but I just did the same test shots with my 70-200 VR1 and have the same results as with the 300 f/4. Maybe even a little better. I am not going to post it unless you want me too but in general both the lenses work equally well with my TC17. As I mentioned in my reponse to Reza, I did not like my results very much until I switched my settings on the D800. A month ago I was not really satisfied with the TC17 on any lens...now it seems to be ok for me. Are you seeing the contrast weaknesses you speak of in my pics in the first post?? Maybe I just don't see it.
And I have post processed these shots in PS, since I view my results and the quality I get only after PP. Quite frankly, if I can get my pics to where I like them, I don't care if they come out on the camera that way. Also, if I shot RAW (which I have done several times), they would be even better. I don't mess with RAW much just yet. My 1st goal is to get consistant with the D800 and lenses in Jpeg, then go to RAW and they should be even better.
PS: You have some "spectacular" shots on your Flickr site. My admiration to you and your skills!!!! Seriously.
Dan (Nikon D800,V2,Sony HX400V,Lumix ZS40) "I don't read, I just look at pictures" - Andy Warhol