It appears to me that you inconsistently sometimes refer to device level (0-255) and sometimes to setting level (0-24). So to reduce confusion, all my levels in the reply refer to setting level (0-24). So level 0 here means that the light is turned on at its lowest possible setting.
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Originally Posted by ProDigit
I like 10. 10 is about the max I'd set it to in broad day light.
But if I'm reading in a pitch black bedroom, even setting 1 is just too bright for comfort, once the eyes get used to the darkness.
If I open the curtains, and some ray of a street light enters the bedroom, setting 1 is good enough for me.
In a dim candle light dinner - style restaurant, I can clearly see when the device is on setting 1, or off.
The screen becomes somewhat blue-er.
For me a setting like '0.75' would have been awesome.
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It is much more likely that setting 0 of the frontlight is too bright for
your comfort in total darkness, because you are in total darkness. Not because the frontlight is too bright. If you are trying to convince anybody that in total darkness and frontlight set to 0 the PW appears white to you, then you are fooling nobody. There is a simple way to change the frontlight to the a lower than level 0 setting you want (0.75 on the scale of 0-255?): just put sunglasses on
. Then you probably want to increase the setting to 1 though. When having frontlight set to 0 and having sunglasses on, you are cannibalizing contrast and with it sharpness (perceived) of the text. Depends on the strength of your sunglasses though.
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Anyway, I generally don't read with the light, turn it to 1 all the time. Eventhough it looks very nice on 10, during the day, it's just wasting the battery, because the screen is perfectly readable in day light without the backlight.
In fact, with setting 1, I never have to worry about being able to see the text, as in the dark the backlight is enough, and in the light, the environment light is enough to read!
One thing I do know, is that the screen looks nicest at a bright setting. However at that setting, it's not healthy to read.
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The LEDs are not making that much of a difference to overall battery life if set to low settings. Low for power consumption meaning here settings 0-10, because of the logarithmic scale. Sure enough, the biggest relative difference in battery drag would be from setting the frontlight either to level 0 or 1 - mind you, that is for any two levels only one level apart. At 1 the LEDs roughly should use twice as much energy when compared to 0. Does that mean you get twice as much battery life out of your PW? Hardly, I doubt it would make a noticeable difference even in a labratory settings. How much more battery life are you getting when using level 0 compared to 10? If the difference is about 5% than it is not really worth bothering, unless you are an accountant in real life and love to count peanuts all day long (no pun intended, I apologize to any accountants). Even at a high estimate of plus or minus 10% is not that noticeable.
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I want to repeat myself in my previous statement concerning LCD screens, and the same applies here.
Focus your eyes above the reader, look in the distance, and have the reader in the edge (corner) of your eye, in such a way that you still see the reader, but can't really read the text anymore, and your focus is not on the reader.
Now adjust the brightness to blend in with your environment (too bright, and the reader will appear as a white square in your vision, too dark, and it will appear as a grey or black square in your vision).
Once you have found the light intensity of the reader, to be the same output as the environment around you, add between '0' to '1' steps of light, but no more than 4 steps of light on the device.
When done, you have set up the reader to be of most comfort for you to read.
In darker environments the light should be lowered, in brighter environments, the light reflection of the environment should make the screen more bright automatically; though you can still compensate by adding a tad more light with the backlight as you desire, though generally anything above weak light inside a house has enough lumen, to ignore the backlight of the device...
(yeah, I'm gonna keep on calling it backlight, since a speaker is not a speaker but a magnetic membrane loudspeaker (or something), an LP is not always Long Play, a video is not always a VCR casette, and a projector is not always a picture projector, but sometimes also a movie or computer projector, and thus, a light shining on the background of a screen I find it to be a backlight).
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Yes, I think everybody noticed that you like to repeat yourself. And as long as you keep calling the light on the PW a backlight, you will never believe that a backlit LCD is a fundamental different beast. You would be surprised how similar a frontlit passive matrix black and white LCD screen looks compared to eink. And I agree with you,
if a light shines on the background of a screen, then we can safely say
backlight. By that theory you can also
never have a backlit eink screen. An eink screen is opaque. If it was translucent (let alone partially transparent), then you would not be able to see much of a difference between black and white.