What is better (sharpness, bokeh, IS)?
Canon 100-500mm + 1.4 extender
vs.
Canon 800mm f/11
I understand that the 100-500+extender cost a LOT more, but I assume many people who would be interested in the 800mm already have 100-500.
I always thought that once I grow up I would buy a supertelephoto (e.g. 600mm f/4) as a retirement gift for myself or something like that. But now that I have the 100-500mm I don't think I will ever need anything longer. Sure, sometimes more reach would be nice but even shooting at 500mm is tricky sometimes.
I am hoping for a high res body (80-100mpix) that would make the need for large lens obvious.