Hi all, I'm a total newbie to Pentax, need your expert advice , please.
I need a long lens, 400mm, 500mm, 600mm for bird photography, that will autofocus with K20D.
Which ones would produce the best image quality (sharpness, contrast, color) ?
I guess there might be great manual focus lenses available, I'd like to consider them too. How well do they work with semi-AF TC 1.7x ?
Please give me as much detail/info as possible, including the weight of each lens, which is an important factor for me.
Sharing PERSONAL experience would be great.
Thanks !
Last edited by igor; 12-09-2008 at 04:51 AM.