[Bf-docboard] Uploaded image looks dark -solution

[marco ardito]

Il 27/02/2014 13:15, Mirek Kučera Quark66 ha scritto:
> Hi Britta,
> I have this experience: If you upload picture with gray background and 
> picture is for instance 420pixels wide (in original, e.g. uploaded), 
> the best for displaying is 420,210,105px and similar nice numbers wide.
> I change your picture from 250px wide to 270px and everything seems to 
> be ok (original has 270px exactly).
> Maybe it is Moire effect during http server transformation in case of 
> pictures with a small scaling factor I think ten + - percent...).
>

but this happens also if 250px is not specified.

try
[[File:Manual-Camera-display-panel.png|thumb|right|Camera Display panel]]
[[File:Manual-Camera-display-panel.png|thumb|260px|right|Camera Display 
panel]]

it's still dark...

I feel that even if "thumbed", keeping it 270px (as original) does not 
trigger the color depth "optimization"
this could explain why just "thumb" attribute causes it.

eg:
[[File:Manual-Camera-display-panel.png|thumb|360px|right|Camera Display 
panel]]
this renders perfect...

It could depend on how the image is "optimized", and what triggers it:
probably uploading a version with 250 color 8bit will not trigger any 
optimization, while 24bit does.

-- 
*Marco*



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