SIgma 150-600 Contemporary or Sport: Good fit?

[A_Random_Dude]

Hi there. I'm a hobbyist, happy to stay with my DSLRs (1DX Mk III, 7D Mk II, 20D, and 300D) and a selection of decent (almost all Canon) lenses. I'm not interested in moving to mirrorless, since my kit is all in good shape and will probably last longer than I will.

I recently picked up a Canon EF 100-400mm f/4.5-5.6 IS USM L II, and I've liked what I've seen with some preliminary testing. My lens wish list now only includes a 500mm. and I've been looking at the Sigma 100-600. It seems like a good tool, and it's available at a reasonable price point. I'm wondering if anyone out there has experience using that lens with either the 1DX or the 7D. I'd really be interested in hearing (reading) your comments.

Thanks in advance!

[A_Random_Dude]

Very true! Though, thinking back in the hazy mists of time when I was in marching band, I do recall that we sometimes practiced in the school gym!

[ebiggs1]

I realized pretty quickly that I would destroy the Sigma C version, pretty quickly!  Like I said above had the Tamron G2 been available at the time it might have bee the best choice for me. It has some weather sealing and is somewhat better built then the C model which has no weather sealing.