Canon Shows off RF 500mm F5.6 L IS in Latest Patent

[clarus]

what is the use of a 300-600 f5.6 if Canon has the 100-500 of very decent quality. You would gain 100mm and 2/3 stop of light at the cost of 7k? IMHO 600/5.6 would be ideal in combination with the 100-500. Light, small and with very good optical quality. With the extender RF 1.4 and 2.0 ideal which would cover all needs from 100-1200mm.

It may not sound much, but to me it would. Given the lens is of decent optical quality and in combination with a TC it translates into an additional 140/200mm.

 

[AlanF]

I'm asking here for this lens for years, thank god!! Make it happen Canon!!

I loved my EF 400mm 5.6L and never had a lens like this again! (no, 100-500 L is not close).

The RF 100-500mm is an order of magnitude or more better than the EF 400/5.6. It is sharper at 500 than the prime at 400, has excellent IS against its absence, faster AF, will focus close and had all the advantages of zoom for framing as well as longer with little extra weight. I’ve used both extensively and the zoom is indeed not close, it is miles ahead.

 

[Dragon]

This is a big-glass-forward design much like the EF 500 f/4 II . That was one of the sharpest lenses Canon ever made even with extenders, so we can only hope.