Love my 50-135mm here are some links to my work in the pit with it, can't post due to copyright issues.
These where all shot without flash the first set at ISO 200 yes ISO 200 somehow I forgot to set it to 800 & the images are stunning
eGigs.co.uk - Deacon Blue photos - at Sheffield Arena, Sheffield on 01/12/2008
These where at ISO 800 at Hull Asylum which has terrible lighting.
eGigs.co.uk - Cerys Matthews photos - at Hull University SU Asylum, Hull on 08/11/2008 eGigs.co.uk - Paul Heaton photos - at Hull University SU Asylum, Hull on 08/11/2008
Will be using this lens at Glastonbury for the first time this year
Thinking about getting the 16-50 but love my Tammy to much, you can see all my concert shots on my site
www.garystafford.co.uk