My lens collection is decent, for my purposes. (Details in Sig line). The weak point is the Sigma 28-70, AFAIC. I've got the primes at 50 and 100 covered OK for my purposes, so I'd like to get something to cover the mid-20mm to 100mm range. Assuming I can spend up to around $400, and most of my shooting is outdoors, landscape/wildlife, in fairly good light, is there any reason to go with the 55-250mm over the XX-135mm lenses? I'm just not sure if the extra reach of the 250 is useful, what with my 100-400L also in the pack. On the other hand, that's a nice wide range for one lens. I guess my indecision is based on whether the IQ of the XX-135 lenses is better than the 55-250, enough to override their shorter reach? (And higher price, for the most part.)
Any thoughts? Thanks!
, 50D, [17-40mm f/4


