I am negotiating a trade that would let me upgrade to a 5D. I plan on trading some lenses, so I will have wide angle(17-40L) and primes(Canon 85 & 1.8 Sigmalux ) covered, but I still will need a recommendation for a good medium zoom walkaround. The 24-70L is too expensive right now, so I am considering the following:
28-135 IS USM
Sigma 24-70
28-105
Tamron 28-75
I am thinking that the primes will keep me covered for low light so the 28-135 might be a good choice for the good range.
Any advice is appreciated.


