rmorrison1116 wrote:
I don't know much about the Tamron offerings but I own both Sigma 150-600 models and the Canon 100-400L II and the 1.4 III teleconverter plus the Sigma 1401 teleconverter and Sigma 2.0 teleconverter.
My Sigma 150-600 Contemporary is fairly light and easy to use hand held. My Sigma 150-600 Sport is fairly heavy and depending on ones age and physical strength, may be difficult to use hand help, especially for any length of time.
My EF 100-400 with the 1.4 teleconverter is fairly light and quite easy to use hand held.
The area you are touring is fairly hot and dusty, not ideal conditions for the Sigma Contemporary model but not a concern for either the Canon or Sigma Sport lenses.
The way I see it, you are limited by the older out dated technology of your Camera body. If you are planning on leasing a lens maybe you should consider leasing a newer body as well and going with the EF 100-400L II and 1.4 III teleconverter, regardless of what anyone says, it is the better lens choice.
I don't know much about the Tamron offerings but I... (
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