aperture and sensor size

[Derrel]

Look at the specifications for the lens on your compact.

It likely say that f/2.8 is an equivalent f-stop and the actual f/x is something different.

They don’t do that for aperture, only for focal length. If they did do it for the aperture, people would think it affects their exposure settings (it doesn’t, unless the manufacturer also tweaked how the ISO numbers work), or they would see something like f/16 as the maximum aperture and nobody would buy it.

I think he had a brain fart when he wrote that...maybe got his aperture and his shutter speed nomenclature mixed up...because ONLY focal lengths are listen as "equivalent" on compact cameras. The actual f/stops on the lenses are always listed in...f/stop values, as measured, never in equivalents.