Is the Canon 500 f/4.5 a decent lens to start with?
I found a Canon 500 f/4.5 locally (~$3k). Will it be a decent choice for use either on tripod or on a beanbag? I did pick up a Wimberley head for my tripod in anticipation of picking up a 500. I have used my OM 350 w/ a 1.4x, so the focal length isn't totally new, but it will be different and exciting having AF. :)
I have read it's hard to get repairs on this lens, but that they are pretty bulletproof in the field and not prone to needing repairs.
Your advice, please?