thatoneguy wrote:Ok let me explain it in words you might be able to understand
If you flash the same image twice or more times at a speed which the human brain/eyes cannot detect the double image effect goes away. The reason we see double images when we double strobe is because the persistence is within our viewing/detection threshold.
There, you happy?
There is no need to be so condescending.
When the strobe duration is reduced, the gap between strobes widens; this results in higher motion clarity, more flicker, and less brightness.
When the strobe frequency is increased, the gap between strobes is narrowed by repeating images; this causes double, triple, quadruple etc. images to be displayed in motion - depending on the source/display frequency.
If you continue to increase the frequency, eventually you will reach a point where you cannot see the gap between the strobes, and you will stop seeing multiple images.
But since we cannot see any gap between the strobes, this will just look like any other flicker-free/sample-and-hold display, and will have lots of motion blur.
There is never going to be a point where reducing the strobe duration is going to reduce flicker.
Reducing the strobe duration only widens the gap between strobes.
The only thing that continually reducing the strobe duration will do is that there is probably a point where the strobe duration is so short that we can no longer perceive an image at all, and the screen will just look black.
thatoneguy wrote:The speed at which the frame is displayed. Or maybe I should say the time a frame is displayed on the screen for.
Say a frame is displayed for 1 nanosecond at 60fps@60hz, at 60@120 it would be slightly more than a nanosecond because it would have to display the same frame twice but at this point the frame is displayed for such little time either way that the human brain cannot detect the double-image because it is below their detection threshold.
Whether the strobe duration is 1ns or 5ms, at 120Hz the strobes are still 8.33ms apart.
Reducing the strobe duration only increases the amount of off-time between strobes.
- With a 1ns strobe duration, the off-time will be 8333332ns
With a 5ms strobe duration, the off-time will be 3333333ns
Both are still going to display double-images if it's a 60 FPS source being displayed at 120Hz.
Assuming that brightness is kept constant, the double-images are going to be worse with the 1ns strobe since you have increased the gap between the images.