LCD and your eyes

[JSWolf]

Originally Posted by 4691mls

Maybe the app used for reading makes a difference too. I read mostly library books, and the Overdrive app has minimal color and brightness adjustments. The Sepia background is a pretty light color. It's better than the white background option, but I would like it a little darker. Also, there's no contrast adjustment. Maybe apps that people are using for purchased books have more options?

Don't most reading apps default to a white background with black text? That I find it too bright at the average tablet/phone settings.

[MikeB1972]

Originally Posted by HarryT

But exactly the same is true of a frontlight, of course.

Yep, but most of the "I get a headache reading on LED" I heard was prior to frontlights, peoples lines are now set in stone.

I'd assumed the e-ink only people keep the front light turned down to a comfortable level in the dark (I know I do ).

You're right though, if someone turns a frontlight as bright as a backlight then they should have the same problem.

Right experiment time, someone who can't read on LED get a light meter and adjust the backlight on a e-ink device to match lumens, read and see if you get a headache

[HarryT]

Originally Posted by MikeB1972

I'd assumed the e-ink only people keep the front light turned down to a comfortable level in the dark (I know I do ).

One might very reasonably think so, but at least one of the regular posters in the Kindle forum has said that he reads in all conditions with his Kindle's frontlight on maximum brightness . It's a funny old world .

[JSWolf]

Originally Posted by HarryT

One might very reasonably think so, but at least one of the regular posters in the Kindle forum has said that he reads in all conditions with his Kindle's frontlight on maximum brightness . It's a funny old world .

Does this person complain about reading on an LCD screen?

[MikeB1972]

Originally Posted by HarryT

One might very reasonably think so, but at least one of the regular posters in the Kindle forum has said that he reads in all conditions with his Kindle's frontlight on maximum brightness . It's a funny old world .

Maybe he wears sunglasses a lot

[4691mls]

Originally Posted by JSWolf

Don't most reading apps default to a white background with black text? That I find it too bright at the average tablet/phone settings.

AnemicOak posted screen shots of some other colors a page or two back. I don't know what app those were from.

I don't remember which color setting the Overdrive app defaulted to when I first installed it. Probably white. It has 3 options:. Black on white, white on black, and sepia. The sepia background color and text color are lighter than the colors in AnemicOak:s screenshots from whatever app he/she uses. . In the Overdrive app, the only way I have found to make the text look darker against the background is to set the font style to Bold, but I don't like reading bold text. The app really needs a contrast setting.

[GlenBarrington]

Originally Posted by MikeB1972

Maybe he wears sunglasses a lot

Or he works on his tan.

[HarryT]

Originally Posted by GlenBarrington

Or he works on his tan.

LEDs emit close to zero UV light, Glen. They won't "tan" you.

[pwalker8]

Originally Posted by HarryT

LEDs emit close to zero UV light, Glen. They won't "tan" you.

One should never let the facts get in the way of a good story or a good joke.

[HarryT]

Originally Posted by pwalker8

One should never let the facts get in the way of a good story or a good joke.

Actually, I must correct myself. UV LEDs do exist, but white light LEDs, such as are used for LCD backlights (and eInk frontlights) emit virtually no energy in the UV part of the spectrum.

[AnemicOak]

Originally Posted by 4691mls

AnemicOak posted screen shots of some other colors a page or two back. I don't know what app those were from.

MapleRead

[GlenBarrington]

Originally Posted by HarryT

LEDs emit close to zero UV light, Glen. They won't "tan" you.

Harry, I invoke some artistic license!

[Cinisajoy]

Originally Posted by HarryT

One might very reasonably think so, but at least one of the regular posters in the Kindle forum has said that he reads in all conditions with his Kindle's frontlight on maximum brightness . It's a funny old world .

Is this the same one that complains that Amazon needs to fix the lighting or a different one?

[Salgueiros]

Nobody here ever heard of Computer Vision Syndrome?

One thing i know for real is that many people, myself included get dry eyes waaay more easily when reading on a computer screen, and that is because on average we blink 12 times per minute, but when we are on the computer, we only blink five times per minute? That can add up to dry eyes. And it is unconscious, you don't realize you are blinking less.

[Salgueiros]

That added to the glare, brightness, position, etc really makes reading on a computer screen much less pleasant.