Originally Posted by Litos
i CANNOT fathom doing pohotography without shooting wide open at 2.8 at 200MM
... and I'll never understand that need. I get really sweet bokeh at f/4.
However, I DO have the 500mm f/4 and if I couldn't afford that I'd be considering a 70-200mm f/2.8 with the 1.4x and 2.0x TCs. Either that or the 300/f2.8 with the TCs.
Here's something interesting to do. Go to Flickr or Smug Mug or any searchable image database that has lens specs and EXIF. Most images taken with f/2.8 lens are shot at f/4 and smaller apertures.