>I think they are great photos. Do you like that lens? What >made you get the TC1.7 versus 1.4? > >I am not so sure that the effective focal length become 750mm. > I thought that only happens on a DX camera. But I am >probably wrong.
Thanks Reza. I bought the TC17 a few months back when I read Mansurovs comments about how good the TC14 was on the 300 f/4 and he said the TC17 was also very good. I got the TC17 because I wanted the extra reach over the TC14...I figured I could walk a little closer to get the effect of the 14 but not the 17 so I was trying it out. So that's why I chose the TC17.
I love the lens...the 300 f/4, 70-200 VR and the 105 VR are my best glass. I wish the 300 had VR so that I could hand hold sometimes but on the tripod I think it is great. And I only use the 300 for more distant shots as a carry along lens with the TC attached.
Regarding the focal length. I just took the 750 off of the exif data when I right click on the photo and look at properties/details. I rarely shoot the DX mode on my D800 since I can crop anyway ...but I did for these shots...and in these tests I (and the data calculator in the camera) calculate the focal length as 300mm X 1.7 for the TC X 1.5 for the DX effect. That actually calculates to 765 but I can't explain the 15 difference.
Now here is the interesting part....a few weeks ago I was reading Hogans and Mansurovs tips for taking sharper pics and I put their settings into my D800... and it really made a difference for me!! Using the same techniques etc. as I always had. I don't know what it was but all of a sudden I am getting MANY more keepers....and I like that a lot. So I tried using the same settings with the 300 f/4 test today and this is what I got....every time.
Enough said ...but I have been a real happy camper the last 2 weeks after making those adjustments.
Dan (Nikon D800,V2,Sony HX400V,Lumix ZS40) "I don't read, I just look at pictures" - Andy Warhol