Pepe Guitarra wrote in post #14940483
I really want to buy the 100-400mm f4.5-5.6 lens (or 120-400mm- Sigma), but the difference between the Canon L lens and the Sigma is 2:1. Both lenses have OS and the sigma has HSM. I have $ for the Sigma, and not for the Canon, if I want the Canon I would have to wait 6 months to a year to save the $. Would I be wrong buying the Sigma? Thanks
From your statements, I think you will always wonder if you don't go Canon.
gjl711 wrote in post #14940495
There is no right or wrong. Each lens has it's advantages and disadvantages. The 100-400 has faster AF and better IQ, the Siggy is cheaper and has more reach. What's more important?
The Sigma has less reach on the wide end, and the same at the long end. The advantages the Sigma has are price and better image stabilizing features (about two stops better). There is one(two) other advantage(s) to Canon is build quality (potential resale value). [If the OP was talking about the Sigma 150-500, then you would be right.]
(For me) If those were my choices, I'd wait and get the Canon. Only if you truly can't afford to wait (money or must have the reach now) would I then go with the Sigma. If you choice was the either the Sigma 50-500 or Sigma 150-500, it would be a harder decision.