A Canon RF 300-600mm f/4-5.6L IS USM on the Horizon

[stillviking]

If not f4 I don't know what's this lens for.

 

[ruzun]

That same youtube channel is now predicting a 300-600mm with a constant 5.6 aperture. that makes more sense but honestly, its been too many years and too many false rumors to believe anything before canon actually announces some hint officially. Constant 5.6 makes sense since it would be an internal zoom most likely, and 5.6 is faster than other companies 600mm zooms are, so it will look good on paper in comparison. Although practically speaking 5.6 and 6.3 are almost equal.

 

[john1970]

If not f4 I don't know what's this lens for.

A smaller aperture (either 5.6 or 6.3 would be significantly lighter. I was really hoping that the 300-600 mm f4-f5.6 rumors would be correct, but until I see the official release from Canon who knows what and if when we will get it. The one requirement for me is an internal zoom design. Whether it is f5.6 or f6.3 at the long end does not matter too much to me. A f6.3 design would be lighter and less costly to produce.

 

[homebodyMacro2]

That same youtube channel is now predicting a 300-600mm with a constant 5.6 aperture. that makes more sense but honestly, its been too many years and too many false rumors to believe anything before canon actually announces some hint officially. Constant 5.6 makes sense since it would be an internal zoom most likely, and 5.6 is faster than other companies 600mm zooms are, so it will look good on paper in comparison. Although practically speaking 5.6 and 6.3 are almost equal.

Yeah, I wouldn't put too much stock into any rumors, and especially not ones on a YT channel that change twice in a week based on single source leaks (at least, the first one was a single source).