EF Lens

[Luke1981]

Budget? If its under £200 you can't go wrong with the 55-250

Just purchased a new efs 55 - 250 mm lens with image stabilization from ebay for £130.

Thanks to all for the advice 

Luke

[T_J_G]

that's a good buy!

[Luke1981]

This is the lens

http://www.ebay.co.uk/itm/110853933749

The seller has a few of them for sale.

[cняis]

EF means it's a full frame lens, the EFS ones are only for crop sensors.
If you have a Canon 5D (Mk1/2/3) or 1D, then you can only use EF lenses, any other Canon DSLR you can use with EF or EFS.

I assume you're referring to current Canon DSLRs as my old D60 is EF mount only