There are many devices that can detect PWM on a variety of levels, but I'm wondering how to test for temporal dithering in a wide variety of devices such as phones, tvs, tablets, laptops, and even in car panels.
Are there external devices that can test for temporal dithering?
I've been looking into buying an external capture card, saving frames, and then manually comparing pixel values.
I read up on that. The easiest and cheapest way is to get an microscope attachment for your phone and then use the "Slow Mo" function to observe the screen. Apparently you need about 200x magnification. You can get 200x magnifying attachments on Aliexpress for about 15$.
I ordered one, but it has not yet arrived.
amusesmile If you have a practical methodology for doing this, I'd love to try this as well. Thanks for mentioning it.
Intet I'm curious as to how to execute this. I'm assuming to put the phone in slow motion video capture to capture the frames? Since this is an indirect video being taken of the screen rather than a screen recording, I wonder how easy/hard it would be to analyze the difference in frames since you'd have to take into account external sources such as light when using a camera/microscope.