amarkin Posted March 25, 2007 Share Posted March 25, 2007 How would you rate this teleconverter? I am planning to use it with my 85mm F/1.8 AF-D. It's stated that the teleconverter is designed to work with lenses 90mm or longer. Will I have issue if I use it with 85mm lens? Thanks! Link to comment Share on other sites More sharing options...
John Crowe Posted March 25, 2007 Share Posted March 25, 2007 It may be a problem. I once tried to use a 2x specifically meant for a 200mm lens or longer on an 85mm lens and could not achieve clear focus at any setting. It worked fine on my telephotos that it was designed for. Link to comment Share on other sites More sharing options...
erik_loza Posted March 25, 2007 Share Posted March 25, 2007 What's the element like on the back of the 85mm? That would be my concern. I used their 2x AF for a couple of years and it was worth the money. Physical interference may be your issue. Good luck. Link to comment Share on other sites More sharing options...
andrew_schank Posted March 26, 2007 Share Posted March 26, 2007 I just got the Kenko pro 1.4X which is the exact lens as the Tamron. Works fine with the 85 f1.8. Images taken with the lens set at f2.8 (actual F4.0) are surprisingly sharp, with good color. AF is still fairly fast. I am impressed with the Tamron/Kenko Pro 1.4X . It works great on my 80 200 2.8 lens, making it an effective 168mm to 420mm f4.0 zoom, which is perfect for outside sports and nature stuff. It is quite useable wide open which surprised the heck out of me.<div></div> Link to comment Share on other sites More sharing options...
andrew_schank Posted March 26, 2007 Share Posted March 26, 2007 I should have clarified, making it an effective 168 to 420mm lens on my D200. Link to comment Share on other sites More sharing options...
andrew_schank Posted March 26, 2007 Share Posted March 26, 2007 why aren't any of my photos that I submit showing up in the posts? Link to comment Share on other sites More sharing options...
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