I'm finding it awkward at times, especially when trying for candid shots, to use the 50mm f/1.8 mkII on a rebel XT. It isn't bad when the subject doesn't mind having there photo taken, but that isn't always the case. I'm mostly talking about taking pictures around my very large family (have some shy siblings etc). Would moving to the 85mm f/1.8 allow me to be substantially further away? Right now, I'm finding I need to be 4-6 feet away for a decent head/shoulder shot. How much more distance would the 85 afford me? Also, I'm finding that with f1.8-f2.2 shallow DOF shots, the AF motor of the nifty isn't superbly accurate and I end up losing more shots at those settings than I can keep. Will the USM motor of the 85 fix this issue a bit?
I'm also shooting a couple weddings next year, no charge to my in-laws. I think it would be a suitable lens for that, paired with a Tamron 17-50 f2.8 XR diII or the Sigma 18-50 f2.8 EX
Any help would be greatly appreciated.
Cheers,
Paul


