Quote:
Originally Posted by AnotherCat
In order to avoid endless repetition by me I suggest that you do a search among my posts in older threads on the matter. There are also contributions by others in threads regarding brightness for example (and I have just posted in this thread as well addressed to another poster, and others have called out in this thread the meme of light shining), reflective light, etc.
But I suspect it will really be of no interest to you as your question comes across as a confrontation from one not open minded to the matter rather than being a genuine request for information.
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Of course it's a question of "confrontation." Until you prove otherwise, I won't be inclined to believe this so-called meme exists. You can avoid endless repetition perfectly fine with links as opposed to calling on someone else to do your homework for you.
Posts with the word meme: the one I quoted and
this one, which is about the complete opposite: another "meme," namely that some older LCDs can be hard to make out in direct sunlight. This particular post would seem to suggest that you use the word meme to mean almost the opposite of what it actually means: namely n=1. Of course it wouldn't make for a good argument if I ran with that, since you clearly don't intend it that way. It would be attacking a straw man.
The only properly relevant-sounding thread:
https://www.mobileread.com/forums/sh...d.php?t=289150
Your most relevant looking reply by you in that thread:
https://www.mobileread.com/forums/sh...37#post3573237
Of course I didn't look through all your posts, so if they didn't contain the search terms meme, brightness or LCD I probably didn't lay eyes on them, but I reckon I got the gist from the general context of that post. Quoting said most relevant looking post:
Quote:
Originally Posted by AnotherCat
Second, I roll my eyes every time someone talks about LCDs shining light into their eyes, or claiming reflected light is different to emitted light. Well I'll give them that reflected light is different in that reflection renders it diffuse, but there again LCD screens diffuse their light too so no case there - they just need to turn the brightness down.
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You are probably technically correct, of course, yet also (purposefully?) missing the point. When you reflect environmental light, the relative brightness and color temperature will be pretty decent without even trying. It mostly comes down to that.
- At night, it won't be too bright because there's no minimum brightness inherent in what you're looking at. This is presumably your "meme" about having a light shining in your eyes. If you have a device right in front of you that can't dim the brightness below "it can pretty much light the room at night," then that simple observation is not a meme, let alone parroting a meme. Moreover, I posit that most of us probably have plenty of such devices around the house.
It could be a faulty generalization depending on how it's phrased. Whether it's true for most LCD displays in regular consumer devices is a different question than whether it's inherent in the technology.
- During the day, there won't be delays or mismatches because the light sensor is shaded. This can be particularly relevant if you're in a moving vehicle, though I would suggest disabling auto-brightness and keeping it too bright in the shadows in that case.
Quote:
Originally Posted by AnotherCat
I was actually referring to the claims (made in these forums) that diffused reflected light illuminating an eink reader screen is different to other diffused light (such as that from a backlit diffuser such as in a tablet). In fact visible light photons are visible light photons regardless.
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Link or it didn't happen.

But seriously, without context it's not obvious whether you're right, some form of technically right or a variety of wrong. For example, photons are photons, but that doesn't mean they're all at the same wavelength.
Just to be clear, I don't believe that backlit displays are harmful, at least not beyond the extent to which staring at anything at the same focal length for a prolonged period of time is harmful.