Is iMac 24 PWM Free?

[aware]

I'm looking for the answer but have not heard anyone mention here. Is the new 2021 iMac flicker free?

 

[jukkhop]

I believe all macs have been voltage modulated for a very long time now, but I don't have hard evidence to back this up.

 

[JLOAKS]

I tested it with slo-mo against bright backgrounds while adjusting brightness from lowest to highest and did not notice PWM flicker. This is obviously not fool-proof and there could still be flicker, but it's not going to be the same low quality PWM like in the latest iPhones (as this is easily caught with slo-mo).

Notebookcheck determined the latest 2020 iMacs did have PWM flicker under 66% brightness setting (but at a very high frequency): https://www.notebookcheck.net/Apple...All-in-One-gets-a-matte-display.503306.0.html

 

[4sallypat]

Funny, when I hear "flicker free", I think back to the motion picture film camera days when I worked on Panaflex, Arriflex and Mitchell ( 16, 35, 70mm) cameras!

Back then we were always looking for that flicker when running 29.97 fps against a 60 HZ lighting background....

 

[aware]

That's good news. Can anyone with a new iMac test it with this website for sure?

How to test my Monitor for PWM flicker? | IrisTech

Do you know what PWM Flicker is? Well, it can be very dangerous for your PC, so hurry up and test your PC for it now.

iristech.co

 

[kargurin]

I can't use the newer iPhones or Samsungs because PWM and headaches. The iMac is fine. It's not an OLED which is where many of us began having problems.

 

[johnscully]

According to Notebookcheck it doesn't use PWM. Nevertheless the screen irritated my eyes a bit while I tested the 24 inch iMac – maybe because of dithering or something like that, who knows...