Quote:
Originally Posted by lan 
This is not like having multiple headphones, of course it makes sense. 
The 85mm is over 1 stop faster and you can get pretty sweet background blur. I think this is perfect range for subject isolation. I find 50mm too short and 100 a little long as well as 2.8 not fast enough. 85/1.8 is fast in autofocus also and would be sweet in fast paced shooting.
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Quote:
Originally Posted by beerguy0 
I wouldn't hesitate to add the 85 /1.8. Great lens, fast AF, has excellent bokeh. You can get some great OOF effects with this lens.
My buddies Crate tube amp:
20D, 85/1.8 handheld at 1/10s, f/1.8, ISO1600
Believe me, I've already pondered that one. I know someone who has a FF Kodak body, and has a 12mm lens. I've seen what that combo can do. Someday...
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Well the thing is, I already don't use the 100/2.8 for portraits because f/2.8 is actually kind of slow and the focusing, while already fast for a macro lens, is still slow for anything other than static portraits. And while the 50/1.8 is my main portrait lens right now, 50mm is a little short and the thing is horribly soft wide open, not to mention the rather unreliable AF (but hey, I'm already happy with what I got for $70). With the 85, I'm looking for real AF performance and sharpness wide open.
And the real problem is, if I jump on the 85, that'll leave me with just those three lenses, and I'll be kicking myself if I ever need to shoot landscapes. It's either the 85 or something along the lines of the Tamron 17-50. Agghh I wish I were richer.
Oh and btw beerguy, 1/10s @ 85mm handheld is ridiculous, you have
got to be on benzos or something.