Useless MTF charts

Am I the only one thinking that it's time that f/2.8 enters all MTF charts for prime lenses?

The f/5.6 lines hugging the top just aren't useful.

I thought the two sets of MTF lines were at f/8 and max aperture, be that f/1.2 or f/5.6. They aren't much use anyway, unless you are comparing lenses from the same manufacturer. Each does its own thing with them. There is no standard.

YashicaFX2 wrote in post #16371688
I thought the two sets of MTF lines were at f/8 and max aperture, be that f/1.2 or f/5.6. They aren't much use anyway, unless you are comparing lenses from the same manufacturer. Each does its own thing with them. There is no standard.

Right, so you cannot compare lenses from the same manufacturer when they have different max aperture. The only comparable f-stop if so small it's useless.