We just need Skysafari to not sabotage the very nice backlight control on these devices, and things will improve markedly. No other app can help either, because they are just scaling the pixel values, and as the OP points out most of the light is coming from the black pixels. They're usually very responsive so I guess I just need to try again.īTW, I also corresponded with the author of ScreenDim and it turns out that the Nexus 10 is somewhat unusual in allowing you to turn the backlight all the way down to 1/255 in the OS settings. I sent a support request a few weeks ago but didn't hear back. I can't think of any reason why Skysafari should be fiddling with my backlight intensity. So, the reason this is an issue, is that it is entirely preventable (at least in theory). It's not perfect, as blue and green text is really hard to read through the red filter, but it's still better than night mode. Of course, you will likely need some Rubylith filter material in the field anyway, but the high backlight setting in night mode makes the contrast lousy, so I actually get a more usable field display in non-night-mode with a double layer of Rubylith. Actually, I did some experiments which suggest that it is setting the backlight to a fixed level, so if you start out with a really bright screen, the backlight gets dimmer, but if you start out with it set to minimum, night mode makes it a lot brighter. The issue with Skysafari's night mode, at least on the Nexus 7 and 10, is that while it changes the pixels to shades of red, it simultaneously TURNS UP the backlight. This ultimately sets the "contrast ratio" of the LCD display. Even a completely black screen will emit a fair amount of light from the backlight. The pixels are like valves, controlling how much of the backlight is exposed. There are two contributors to the amount of light coming from an LCD display: (1) the backlight intensity, and (2) the pixel values on the screen. Almost none of the replies to the OP are correctly understanding the issue, so maybe I can help. I just stumbled onto this thread after experiencing similar behavior with my Nexus 10.
Short of red film, can this glow actually be removed, or is the lack of a LED screen going to cause it to hurt night vision more than my phone no matter what I do? It's a shame too, because the Sky Safari + ScreenDim combo on my phone was down right impressive. I tried running another screen filter app i've used on the Droid Charge with some success and that didn't help at all either. If you hold the Nexus 7 and Droid Charge near a wall, there is a pure red glow coming from the Charge and a white glow from the Nexus 7, it's not even close to real night vision. There's almost nothing being shown on the screen yet it can't get darker or redder. You can't see anything in Sky Safari, but the entire screen still glows a grey color. So I turned on ScreenDim, set the screen brightness to the minimum and the contrast to the minimum value. The regular screen brightness was at the minimum value.
#Android 7 brightness slider pro#
In Sky Safari Pro the sky is black in regular mode, but switch it to red mode and the background sky actually turns to a brighter gray! It The stars are red, but the grey background ruins your night vision.
Since it's not AMOLED, the screen always has a glow to it. I recently got a Nexus 7, mainly to use for Sky Safari Pro, because of the larger screen and dual processor. The black background did not emit light, it was just black. More importantly, it didn't impact night vision when I used ScreenDim in conjunction with the red mode because the screen's overall brightness could go to pure black if I wanted. The single core phone was a little slow but ran it and the charts looked beautiful. I downloaded Sky Safari Pro to my Droid Charge with an AMOLED screen a few months back.
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