Looking for a bit of feedback please....

[Scud]

With regards to the SIGMA 135-400mm f/4.5-5.6 APO DG, does anyone have any pros and cons, also a few picture examples ?

I went to monaco this month for the grand prix and with my lens i couldnt get in far enough with the 55-250mm IS, would a convertor be an option ?

Thanks
Martin

 

[trevorbray]

I had the 120-400. Pretty good lens, sharp, bit noisy OS but good value. Rated much higher than the 135-400. I'd look for the 120-400, it'll do a good job and significantly better price than the 100-400 L

 

[phototuition]

convertor would reduce max aperture of 55-250 too much for AF I believe. John

 

[macro_man]

I dont think a convert will fit the 55-250mm. and there is the prob with Af as john mentioned.
U'll be better of with the 70-300mm IS. very nice glass