Tele ZOM
 

I am looking for c.100-500mm tele zoom. The Canon 100-40 is a super lens but c.£1200. Sigma do a nice piece of kit but I do not know how good this would be. Any ideas from anyone?:)

Look at the Sigma 150-500mm f5-6.3 DG OS HSM Lens at about £800. It's a great lens but as it's F6.3 at the 500mm end, you do need bright conditions to get focus. :D

Ok, will shop around and sees what going, many thanks:)

You might like to have a look at the Sigma f4.5/5.6 120-400mm at around £100 less than the 150-500mm (currently around £725) with slightly better performance characteristics.