converter

[danblade]

what converter works best with a canon 10d and sigma 70-200mm 2.8 lens, i am using it for sports photography (motorbike racing ).
.

[Photo-John]

I haven't used it, but I expect the Sigma 1.4x converter would be best. I don't know if the Canon converters will work with the Sigma lens. They only work with some Canon L lenses. Keep in mind that you'll lose one stop of light with a 1.4x converter, and 2 stops with a 2x converter. And you can expect autofocus performance to suffer, too. Plan on pre-focusing. Although I can't imagine you can use AI-Servo with the 10D and Sigma lens for motorcycles.

Are you shooting the TT? Can you post some photos? I want to see what you're doing!

[Ouvinen]

Go for the Sigma EX converters. I have both. In good light the 10d will AF okay in servo mode, not of course when the subject is really close and really fast... I shot this sequence with my Sigma 70-200/2.8 EX HSM + 2x EX teleconverter and my 10D two weeks ago.. Actually didn't just shoot in bust, but I let it focus and took shots when I wanted. The situation took so long that if I had just kept the shutter depressed I'd have filled the buffer in no time...

Camaro clash

[danblade]

I haven't used it, but I expect the Sigma 1.4x converter would be best. I don't know if the Canon converters will work with the Sigma lens. They only work with some Canon L lenses. Keep in mind that you'll lose one stop of light with a 1.4x converter, and 2 stops with a 2x converter. And you can expect autofocus performance to suffer, too. Plan on pre-focusing. Although I can't imagine you can use AI-Servo with the 10D and Sigma lens for motorcycles.

Are you shooting the TT? Can you post some photos? I want to see what you're doing!

I hope to go over for a few days,i am only stating to use a camera so i dont know what
way the photos will turn out but for sure i will send some to you .
thanks for the advice ,very good site ,dan

[danblade]

thanks for the advice, it seems to me the best thing to do is buy a bigger lens.thanks . dan