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Il 27/02/2014 13:15, Mirek Kučera Quark66 ha scritto:
<blockquote cite="mid:5y%7D.1Vajh.5ma%7BL5JyJco.1J3onQ@seznam.cz"
type="cite">Hi Britta,
<div>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.</div>
<div>I change your picture from 250px wide to 270px and everything
seems to be ok (original has 270px exactly).</div>
<div>Maybe it is Moire effect during http server transformation in
case of pictures with a small scaling factor I think ten + -
percent...).</div>
<br>
</blockquote>
<br>
but this happens also if 250px is not specified.<br>
<br>
try<br>
[[<a class="moz-txt-link-freetext" href="File:Manual-Camera-display-panel.png">File:Manual-Camera-display-panel.png</a>|thumb|right|Camera Display
panel]]<br>
[[<a class="moz-txt-link-freetext" href="File:Manual-Camera-display-panel.png">File:Manual-Camera-display-panel.png</a>|thumb|260px|right|Camera
Display panel]]<br>
<br>
it's still dark...<br>
<br>
I feel that even if "thumbed", keeping it 270px (as original) does
not trigger the color depth "optimization"<br>
this could explain why just "thumb" attribute causes it.<br>
<br>
eg: <br>
[[<a class="moz-txt-link-freetext" href="File:Manual-Camera-display-panel.png">File:Manual-Camera-display-panel.png</a>|thumb|360px|right|Camera
Display panel]]<br>
this renders perfect...<br>
<br>
It could depend on how the image is "optimized", and what triggers
it: <br>
probably uploading a version with 250 color 8bit will not trigger
any optimization, while 24bit does.<br>
<br>
<div class="moz-signature">-- <br>
<div>
<div><b>Marco</b></div>
<br>
</div>
</div>
<BR>
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