10 out of 10 points and recommendedIf you need both reach and speed, this is your best bet!None, if you're a Pro or Un-Married.
When matched up with Canon's EOS 1DMkII it is fantastic! Effective 650mm reach and both the AF / IS gives 1st class performance. Used with a Wimberley gimbal-head and you have total control for active mammals or birds in flight. I used to lift weights (a lot) so I wouldn’t disqualify the heavier 600mm f/4 L IS just on weight, but the 500mm is obviously shorter, easier to handle, and I’d swear superior optics. My only complaint is despondent look in my friend’s eyes when I say NO, about lending it.reviewed November 1st, 2005 (purchased for $5,200)