Originally Posted by
JJphoto
Bob, I had this lens a few years ago,and sold it about 3 months after I bought it. not a very good lens IMO, it's soft
wide open at 500mm, bokeh is only so so. maybe it's just my copy. or maybe I got spoiled by the L lenses. if you really want this lens, I would try that one first before you buy it.
I know you really want something longer, will you consider a EF 500mm non IS version or if it's still too expensive, maybe waiting for the 500mm 5.6 is a better choice, but who knows. like I said anything longer than 420mm is not cheap in the Canon line.
one more thing, have you ever tried the [url="http://www.michaelfurtman.com/taping_the_pins.htm]"tape the pins[/url]" trick? maybe you should try it on your 100-400mm with your 7D.
good luck!
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