Retired CPO wrote:
Just my opinion, but run far and fast if the only thing on offer is a Tamron big zoom!! I don't have a problem with short Tamron's, but I've owned two Tamron big zooms and they were both awful at the long end!! And, let's face it, that's what you are buying with a big zoom. If it's not sharp beyond 400mm, then what's the point??
I don't know what happened with your use of a 'Tamron big zoom' but I use the G2 150/600 as recommended by P.H. Rubin and love it. A number of my friends have bought the same spec lens and all have been delighted by the performance.