Re: [ft-devel] State of autohinter stem darkening

[Alexei Podtelezhnikov]

On Thu, Oct 22, 2015 at 10:34 PM, Alexei Podtelezhnikov
<address@hidden> wrote:
> On Thu, Oct 22, 2015 at 7:44 PM, Nikolaus Waxweiler <address@hidden> wrote:
>>> My monitor is sRGB. Yours is likely too. We are looking at the corrected
>>> glyphs.
>>
>> No we aren't, precisely because of our sRGB monitors. The bitmaps FreeType
>> produces wouldn't need to be corrected if our monitors had a gamma curve of
>> 1.0 (= linear space), where 1 + 1 = 2. But sRGB describes a gamma curve
>> approximating 2.2. So unless this is accounted for, we are looking at
>> uncorrected glyphs :)
>
> Perhaps, this is the explanation I was looking for. You are basically
> saying that sRGB imposed by the monitor is not a good idea for high
> contrast text rendering and has to be undone. I can buy that. So when
> you talk about gamma of about 2 you actually mean power of about 1/2.
> I was confused.

Eye is so much more complex:
http://www.telescope-optics.net/eye_intensity_response.htm