Hi,

yes.

I have a little bit of usable vision so, I turned my screen brightness up to 
100%.  Next, I went to settings/general/accessibility and inverted the colors 
and turned on the screen curtain.  When you do this, you can see light from the 
display clearly.

hth  

Ricardo Walker
[email protected]
Twitter:@apple2thecore
www.appletothecore.info

On May 7, 2013, at 6:52 AM, Nicholas Parsons <[email protected]> 
wrote:

> I wondered about that. If what you're saying is right, it's a real shame. I 
> thought the screen curtain might just kill all light to the screen, thereby 
> conserving battery.
> 
> Have you actually tested this, have you? What did you do and what were the 
> results? It's very interesting.
> 
> On 06/05/2013, at 11:55 AM, Ricardo Walker <[email protected]> wrote:
> 
> Hello,
> 
> Sorry, I forgot to write the main part of my message. lol.  In my opinion, 
> screen curtain is not as good at conserving battery life as actually reducing 
> screen brightness.  In my rudimentary testing, turning the screen curtain on 
> just basically turns the pixels opaque, not dim the backlight.  Its like 
> pulling a black shade down on a window streaming in sunlight.  Just because 
> the shade is down, doesn't mean the sun isn't still up. :)
> 
> Ricardo Walker
> [email protected]
> Twitter:@apple2thecore
> www.appletothecore.info
> 
> On May 5, 2013, at 9:32 PM, Nicholas Parsons <[email protected]> 
> wrote:
> 
>> Why don't you just turn the screen curtain on instead of lowering 
>> brightness? Or do you still need the screen to look at?
>> 
>> P.S. That blows my mind a little, Ricardo, that you discovered that 
>> connection. The last thing I'd think to experiment with in trying to solve a 
>> problem like that would be screen brightness. How bazaar. 
>> 
>> On 06/05/2013, at 9:17 AM, Ricardo Walker <[email protected]> wrote:
>> 
>> haha,
>> 
>> No problem.  I guess we will need to turn down system brightness in 
>> settings.  This is much easier on an iPad since brightness can be controlled 
>> from the app switcher though.
>> 
>> Ricardo Walker
> 
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