Sebastien, if you click on the link that says "full exif" next to the exposure information below each picture, then you should be able to see the focal length used. If the focal length shows 500mm, then it's the 300mm f/4 AFS lens with the 1.7x TC17EII teleconverter. The actual focal lenght is 510mm, but I dont know why it doesnt show as such. Hope this helps.
Sebastien Bouchard
13-Apr-2006 15:50
Hi Michael,
I would like to know witch pictures are taken with the 300mm f/4 + 1,7x convetor. I have this products too, and i'm not realy happy with the result. The 300mm work very well, but with the convertor, it's not very good for me. If you wont, you can see some of my work at this web site:http://www.treknature.com/members/odin/photos/