🚀 go-pugleaf

Hello

You say that gamma correction has nothing to do with CRTs.

OK I have a slide that is well exposed. I look at it by holding it up to the light, it looks fine. I put it on a light box, it looks fine. I project the slide using a projector on to a screen, it looks fine. I have as far as I know applied no correction.

I now scan the slide using a slide scanner. The scanner is a linear device. The image on the CRT is very dark. I cannot see the image unless I apply a inverse gamma of 2.5 to the image displayed on the CRT.

What is compensating our visual system to see the slide properly in the first three cases, but not in the last unless we apply a correction to the CRT?

Microphones are not like our ears, nor are loudspeakers.
They are the devices that react directly to sound pressure.
Our ears are much more complicated.
They react differently depending on the level, equal loudness curves and all that.

Mike Engles