Thx for the video. People should be talking about this much more and screen manufacturers/eye doctors should take this much more seriously. A few things to consider: - Mini led screens use local dimming zones. 2,596 in the case of the ipad pro. Each dimming zone has a different frequency/modulation depending on which part of the screen is darker/dimmer. It is like watching at thousand lights all flashing at a different rate. If your brain picks it up, it makes sense it gets burned out quickly. - Newer Mini Led/Oled screens have a much higher brightness, peak of 1600nits vs 600 on older LCD ipad pro. This way the PWM dimming needs to be more aggressive. The more aggressive it is (modulation %) the more noticeable it is on the brain. The higher nits also translates into higher levels of blue light hitting your retina, although you perceive it as less bright, because of the on/off cycle. - The newer Oled iPads have a stable PWM, but the frequency is relatively low at 480 Hz across all brightness levels with high modulation. At 100% brightness, the modulation is approximately 86%, while at 75% brightness, it is 92%. The difference between using it in full lighting conditions vs a dark room is just night and day, literally. Also Oled's have infinite contrast and although the PWM is stable it can appear different, because each pixel is controlled individually. - The contrast of Miniled/Oled screens is much higher. High contrast can strain your eyes because they have to work harder to differentiate between light and dark areas. A lot of emphasize is put on PWM, but maybe that much higher also plays a role. Doctor/scientists should really do tests and research on this. They should separate the effects of PWM, frequency, modulation and contrast on human eyes. Manufacturers should put eye health before power consumption and battery life, or provide customers with different screen options. If you want flagship specs on your device, you don't want to be forced to use a certain screen type. For me reason to change from iPad pro to iPad air for the time being, luckily it comes in 13 inch now. Until they find newer ways of dimming like DC, these newer generation TVs and screens are just not for me. Still undecided how big the impact of contrast is on the equation.
Me neither but I think some people are just sensitive to white lights, and the fact they flicker but there should be a software fix for it, but sadly they won’t offer lcd and more because one it uses more power, but more importantly it doesn’t have true blacks. But they offer iPads without oled you could have gotten an iPad Air it still has the lcd but it’s only 60hz but it supports everything but the new keyboard. The air has a M2 cpu so it’s capable and cheaper you don’t have to go for pro anymore.
hi.i had the same problem with my (ipad pro 2021 12.9) it hurts my eyes so bad...im thinking about buying (apple ipad 10th 2022) its screen is Liquid Retina IPS LCD...can you help me?you think its a good idea to buy it or i should think about older verions like (iPad 9 2021)?
That's a shame, just about any screen I use I don't feel much difference, except maybe those older tube TVs do give me strain. But e-ink, lcd, oled, mini LED, etc, I can't tell any difference to eye strain - I guess I am lucky! But many swear by e-ink for example.
Thx for the video. People should be talking about this much more and screen manufacturers/eye doctors should take this much more seriously.
A few things to consider:
- Mini led screens use local dimming zones. 2,596 in the case of the ipad pro. Each dimming zone has a different frequency/modulation depending on which part of the screen is darker/dimmer. It is like watching at thousand lights all flashing at a different rate. If your brain picks it up, it makes sense it gets burned out quickly.
- Newer Mini Led/Oled screens have a much higher brightness, peak of 1600nits vs 600 on older LCD ipad pro. This way the PWM dimming needs to be more aggressive. The more aggressive it is (modulation %) the more noticeable it is on the brain. The higher nits also translates into higher levels of blue light hitting your retina, although you perceive it as less bright, because of the on/off cycle.
- The newer Oled iPads have a stable PWM, but the frequency is relatively low at 480 Hz across all brightness levels with high modulation. At 100% brightness, the modulation is approximately 86%, while at 75% brightness, it is 92%. The difference between using it in full lighting conditions vs a dark room is just night and day, literally. Also Oled's have infinite contrast and although the PWM is stable it can appear different, because each pixel is controlled individually.
- The contrast of Miniled/Oled screens is much higher. High contrast can strain your eyes because they have to work harder to differentiate between light and dark areas. A lot of emphasize is put on PWM, but maybe that much higher also plays a role.
Doctor/scientists should really do tests and research on this. They should separate the effects of PWM, frequency, modulation and contrast on human eyes. Manufacturers should put eye health before power consumption and battery life, or provide customers with different screen options. If you want flagship specs on your device, you don't want to be forced to use a certain screen type. For me reason to change from iPad pro to iPad air for the time being, luckily it comes in 13 inch now. Until they find newer ways of dimming like DC, these newer generation TVs and screens are just not for me. Still undecided how big the impact of contrast is on the equation.
Me neither but I think some people are just sensitive to white lights, and the fact they flicker but there should be a software fix for it, but sadly they won’t offer lcd and more because one it uses more power, but more importantly it doesn’t have true blacks. But they offer iPads without oled you could have gotten an iPad Air it still has the lcd but it’s only 60hz but it supports everything but the new keyboard. The air has a M2 cpu so it’s capable and cheaper you don’t have to go for pro anymore.
hi.i had the same problem with my (ipad pro 2021 12.9) it hurts my eyes so bad...im thinking about buying (apple ipad 10th 2022) its screen is Liquid Retina IPS LCD...can you help me?you think its a good idea to buy it or i should think about older verions like (iPad 9 2021)?
I don't really know, also still searching for answers. If you get one let us all know if it's better
Mini led has much higher PWM than oled, at least in Ipads, so it should be easier on eyes and for me it is.
That's a shame, just about any screen I use I don't feel much difference, except maybe those older tube TVs do give me strain. But e-ink, lcd, oled, mini LED, etc, I can't tell any difference to eye strain - I guess I am lucky! But many swear by e-ink for example.