Originally posted by land65 To add...I use a polarizer on most of my other lens, but worried that the "slowness" of this lens coupled with a polarizer would make it REALLY slow.
As for the UV filter, I was thinking that it would be nice to protect the front element a bit. I just bought the lens and it's my new baby ya know!
I bought the polariser and UV filter (both Hoya) for my Bigma at the same time as the lens. I figured at least the UV to protect a fairly (for me) hefty investment. In good light the polariser doesn't affect performace noticebly but at early morning and dusk, particularly on cloudy days there is a noticble slowdown in performance. But then again, it's not a low light lens either.
Edit: Whoops pressed the submit button too quick. The Pidgeon was shot with the Sigma 2x Teleconverter attached - the files have been downsized a little to save space. The Seagull is a little blown out on the chest as it was facing the setting sun and there was quite a lot contrast towards the end of the day. This was the first time I use the Bigma and 2x telecon. Overall, I was happy with the shots.