More screengamma

J. Landman Gay jacque at hyperactivesw.com
Mon May 5 19:16:59 EDT 2014


Oh man, I think I just figured out what's going on. You need to be an 
interpreter if you're going to do this stuff professionally.

We have an image in the background with a blendlevel set. To view it 
normally, you right-click it and the script sets the blendlevel to zero. 
I think she's talking about the image while it isn't "in focus". Sigh. 
She kept saying "screengamma" because we were playing with that on a 
card that did have PNGs (I just checked) and it worked there. I thought 
she meant the jpg didn't look right when viewed normally. But I bet not.

Well, it's an easy fix. Change the blendlevel according to platform. And 
set up the screengamma when the app starts up so that the few pngs we do 
have will look right.

Some day you and I should compare bloody office walls.

On 5/5/14, 6:07 PM, Scott Rossi wrote:
> I may be wrong, but a ways back I think there was some addition to LC
> related to color profile support.  Maybe some of the images you're using
> have color profiles associated with them, while others don't, and maybe LC
> is interpreting (or trying to interpret) those.  But usually images
> displaying darker than usual is the result of the PNG format.
>
> I'm a broken record when it comes to PNGs. . .  Tried to find some way to
> reliably strip out gamma info over the years, lots of tools, lots of
> settings, etc, nothing works reliably.  In my experience, JPEGs are pretty
> reliable in terms of displaying properly in LC, but then again I never use
> color profiles.
>
> Assuming you've already tried setting the screenGamma to 2.2 on Mac, and
> leaving it alone on Windows?
>
> Regards,
>
> Scott Rossi
> Creative Director
> Tactile Media, UX/UI Design
>
>
>
>
> On 5/5/14 3:53 PM, "J. Landman Gay" <jacque at hyperactivesw.com> wrote:
>
>> On 5/5/14, 5:39 PM, Scott Rossi wrote:
>>> On my Mac system, the PNG image at the top appears darker than the JPEG
>>> below.  When the slider is adjusted, only the top image is affected (LC
>>> 6.6.1, OSX 10.8.5)
>>>
>>> Are you seeing something different?
>>
>> Well, I was screensharing when I saw it. I told the client how to set
>> the gamma from the message box and we both saw it change. Now neither of
>> us can do it. Maybe the card we were looking at happened to have a png
>> on it instead of a jpg; the stacks have hundreds of imported images so
>> it's possible they aren't all the same.
>>
>> So if the gamma isn't the problem, do you know why the images would look
>> different on different platforms, and between stacks and standalones?
>> Here's what the client said:
>>
>> "right now, you can't see any background at all on Windows; when you
>> make it so that it can be seen on Windows, it's way too dark on Mac"
>>
>> I think the change she's talking about is when we were setting the
>> screengamma. If not, then I'm not sure what she did to "make it so it
>> can be seen." I'll find out, but if you have any ideas I'd love to hear
>> them.
>>
>> --
>> Jacqueline Landman Gay         |     jacque at hyperactivesw.com
>> HyperActive Software           |     http://www.hyperactivesw.com
>>
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-- 
Jacqueline Landman Gay         |     jacque at hyperactivesw.com
HyperActive Software           |     http://www.hyperactivesw.com




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