I have been reading a number of posts like yours stating that the sigma 150-500 is an excellent lens. Before I started seeing them I purchased a used, in excellent condition, tamron 200-500. It has produced some good shots but like the sigma and the nikon is slow and not good in low light situations.
Do you have any experience with the tamron vs sigma?

Thank you and I finally found the lens on that site but did not find any information comparing it to the canon?

Thank you for the response. Do you think they compare in the sharpness of a photo?

Does Nikon make a comparable lens to the Canon 100-400?

Thank you! I am certainly considering going that direction as the warranty is more than likely worth the money.

Ron

Looking for a slightly used 200-500 Tamron or 150-500 Sigma lense.