Thoughts on an FE 100-400mm F4.5–5.6 GM OSS with a Sony a7r IV

Started 8 months ago | Discussions thread
PWPhotography Forum Pro • Posts: 10,838
Re: Thoughts on an FE 100-400mm F4.5–5.6 GM OSS with a Sony a7r IV
2

I have already owned 100-400 GM well before the release of Sigma lens. But even from scratch, I likely will still get Sony lens - 1) So far I still trust and only bought OEM long lenses, Canon or Sony, never ever own any Sigma or Tamron long lenses; 2) in this case, Sony can use TCs while Sigma has no option, or even later Sigma released TC, may still inferior as we see in EF/F mounts; 3) 1/3-stop faster and would be 2/3 stop faster with 1.4x TC provided Sigma ever released 1.4x TC. Sure Sigma is cheaper and lighter that are not really an issue to me.

 PWPhotography's gear list:PWPhotography's gear list
Canon EOS-1D Mark III Sony a7R IV Canon EF 15mm f/2.8 Fisheye Canon TS-E 17mm f/4L Sigma 150mm F2.8 EX DG OS Macro HSM +16 more
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