Can you suggest a reasonably priced telephoto zoom for my 6D and 100D?

Mike Gosling, Northamptonshire

Brian Says… You’ll need to have a lens that fits both APS-C and fullframe cameras. My suggestion is something that covers a 70-300mm range, which has the reach of a

480mm lens on the EOS 100D. With such a reach, it will be important to have a lens that has an optical image stabilizer to allow you to use the camera handheld.

Given the small size and weight of the EOS 100D I would avoid the bigger and heavier models as the camera can feel unbalanced. It shouldn’t be such an issue with the EOS 6D though.

From Canon’s lineup, I suggest the recently launched EF 70-300mm f/4-5.6 IS II USM, priced around £500/$550. This latest version has good optical performance and a 4-stop stabilizer too. From the independent makers, the Tamron SP AF 70-300mm f/4-5.6 Di VC USD at £300/$450 picked up Best on Test and Best Value awards in Photoplus 125.

Wildlife and sports photography needs a lens with longer reach. This bird was photographed with a 70-300mm lens on an APS-C camera