Hello people of Potn!
I've read alot of reviews of the semi-new 70-200 2.8 II recently, and it seems like a really, really good lens. To get straight to the point: would I be totally nuts if I sold my f/4 IS and my sigma 150-500OS to found this new lens and a 2x teleconverter.
I don't feel that I use the sigma often enough to justify having it laying around, and I think I would be able to deal with the loss of 100 mm focal length and maybe a tiny bit of image quality.
I often find that the F4 is too slow for indoor use, and that is basically the main reason I am looking into the F2.8!
I hope you can help me making up my mind!
Greetings from Denmark! (sorry for bad English bla bla bla)