Re: Countless prime lenses, why no F4/F5.6 telephoto primes?
It kind of a mystery. Sigma has a monopoly over E-mount small teles with the 500mm. Nikon has a few options in Z-mount. But I am surprised Nikon hasn't ported the F-mount 300 and 500mm PF lenses over to Z-mount. Still more baffled no one else has licensed or copied the designs for E-mount. Canon's cheap RF 600 f/8 and 800 f/11 options seem to be popular. Odd that Canon has not offered the 300 f4 in RF-mount. I think that lens was in production longer than any other lens ever (someone please correct me if I'm missing something). Clearly enough people liked the 300 f4 to keep it going for 30 years.
Sony has patents for Fresnel lenses but they have not exercised them yet. Seems like most manufacturers are concentrating on the high and low ends of the price spectrum like $12,000 600 f/4 and $900 600 f/8. A 600 f/5.6 would seem to be the happy medium but no one is going there.
Nov 02, 2025 at 12:36 PM
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