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View Full Version : Which T-Con?

BenBirding
Monday 6th March 2006, 16:44
Which 1.4x T-Con do you guys think is the best for the money(out of these)?
http://www.sigma4less.com/sess/utn;jsessionid=15440c564e4845e/shopdata/0020_Lenses/0030_Teleconverters/product_details.shopscript?article=0240_Tamron%2B1 %3D252E4X%2BAF%2BTeleconverter%2Bfor%2BNikon%2BAF-D%2B%3D28TA14XNI%3D29

http://www.sigma4less.com/sess/utn;jsessionid=15440c564e4845e/shopdata/0020_Lenses/0030_Teleconverters/product_details.shopscript?article=0140_Sigma%2B1% 3D252E4X%2BEX%2BAPO%2BTele-Converter%2Bfor%2BNikon%2BAF%2B%3D28SG14XNI%3D29

http://www.sigma4less.com/sess/utn;jsessionid=15440c564e4845e/shopdata/0020_Lenses/0030_Teleconverters/product_details.shopscript?article=0190_Sigma%2B1% 3D252E4X%2BEX%2BDG%2BAPO%2BTele-Converter%2Bfor%2BNikon%2BAF%2B%3D28SG14XDNI%3D29

Edit: I'm leaning toward the Sigma APO or APO DG. I don't know the difference between the two, or if it's worth 5 or 6 bucks.
BenBirding
Tuesday 7th March 2006, 21:51
Anyone?
normjackson
Tuesday 7th March 2006, 22:01
If your lens is the Sigma 70-300mm f/4-5.6 APO not sure the Sigmas are compatible. Have vague recollection the Kenko Pro 300 series are the most lens tolerant. Hope someone can help out.
BenBirding
Wednesday 8th March 2006, 00:13
I read something about Tamron SP and Kenko Pro 300's being the best. I will look at those.
yossi
Wednesday 8th March 2006, 02:48
Precisely - the Kenko Pro 300 family and the Tamron SP family. They are practically the same, different names, different colors. The Sigma Apo DG lens is the best for the moment. The Sigma TC will probably not work with it.
Keep in mind though that the lens is quite a crawler in focusing. Adding a TC will slow it further down. You'll get a maximal aperture of F/8 with the x1.4 TC, @420mm. Not for hand held use and a tripod is almost a must. In addition, you'll need to step down an additional stop to get decent sharpness (f/11). Manual focusing might be needed in most cases.
BenBirding
Wednesday 8th March 2006, 18:57
I won't need that much extra zoom in most cases. I am pretty good at sneeking up on birds, but if there is a shy bird that is keeping its distance, it would be nice to have some more focal length. I don't mind the quirks that go with it.
Thanks guys.
GavinM
Friday 10th March 2006, 01:07
I can't comment on anything else, but can recommend the Kenko Pro 300.