What uses more juice, default mode or dark mode?

[binaryhermit]

Doesn't dark mode do more frequent full refreshes?

[Luffy]

Originally Posted by binaryhermit

Doesn't dark mode do more frequent full refreshes?

It doesn't look like that to me.

[Luffy]

While we're on my case, can anyone tell me how to clean a screen like the PW4?

[azayn]

Originally Posted by DuckieTigger

I would say dark mode uses more power when reading in low or no light, because it needs more front light to create enough contrast. Normal only needs enough light to make the white background visible.

I concur with Jon in last post. Also the front light is always on on Oasis, cannot be turned off in dark mode.

That’s my feeling too. I tend to turn up the front light more in dark mode than normal.

[tomsem]

I don’t think turning up the front light increases (physical) contrast, so much as makes it easier for eyes to focus. Even if you have good visual acuity, if iris is opened up to max it makes focus more difficult.

I think it would be interesting to measure the physical contrast at various light levels and see if it ‘actually’ changes that much. Of course, in the end, contrast perception is subjective (generated by brain).

[John F]

On my Glo HD in dark mode, I have the light set to 8; in normal mode I have it set to 30.

[DuckieTigger]

Originally Posted by tomsem

I don’t think turning up the front light increases (physical) contrast, so much as makes it easier for eyes to focus. Even if you have good visual acuity, if iris is opened up to max it makes focus more difficult.

I think it would be interesting to measure the physical contrast at various light levels and see if it ‘actually’ changes that much. Of course, in the end, contrast perception is subjective (generated by brain).

It does indeed not change the physical contrast, but you need the light in a range where you can see the difference. For the human eye white to light gray is easier to distinguish than black to dark gray

[Luffy]

Please, can someone tell me how to clean a screen like the PW4?

[JSWolf]

Originally Posted by Luffy

Please, can someone tell me how to clean a screen like the PW4?

A dry microfiber cloth to start with. If that doesn't work, a little water should do along with the microfiber cloth.

[Luffy]

Originally Posted by JSWolf

A dry microfiber cloth to start with. If that doesn't work, a little water should do along with the microfiber cloth.

Thanks, JSWolf! I was confused when I used water yesterday. There were a lot of marks left by the water. I panicked but once it evaporated, the screen was as good as new.

[DuckieTigger]

Originally Posted by Luffy

Thanks, JSWolf! I was confused when I used water yesterday. There were a lot of marks left by the water. I panicked but once it evaporated, the screen was as good as new.

Also, don't be afraid to use screen cleaner, or eyeglass cleaner. Evaporates faster and easier to get streak free. Works great on phones too.

[j.p.s]

Originally Posted by Luffy

Thanks, JSWolf! I was confused when I used water yesterday. There were a lot of marks left by the water. I panicked but once it evaporated, the screen was as good as new.

A mixture of water and isopropyl (rubbing) alcohol works well, each dissolves some things that the other does not. This mixture is the solvent used in at least some screen wipes.

[NullNix]

Originally Posted by j.p.s

A mixture of water and isopropyl (rubbing) alcohol works well, each dissolves some things that the other does not. This mixture is the solvent used in at least some screen wipes.

In practice... half the time, huffing on the screen and rubbing it with your sleeve works well enough

[hobnail]

Saliva also works well, but maybe not immediately after having some anchovy pizza.

[DNSB]

Originally Posted by hobnail

Saliva also works well, but maybe not immediately after having some anchovy pizza.

Is that why does the cat keeps licking the screen of your ereader?