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<div class="moz-cite-prefix">Paulo Ney de Souza wrote:<br>
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<blockquote type="cite"
cite="mid:CAFVhNZMwjV86iDuoanLQdEfD1Qn_wKSSvGhYAsRRunU9WhC8Xg@mail.gmail.com">
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<div>And on another point, reading the PNG specification (<a
href="http://www.libpng.org/pub/png/spec/1.2/PNG-Chunks.html"
moz-do-not-send="true">http://www.libpng.org/pub/png/spec/1.2/PNG-Chunks.html</a>)
I saw the following text:</div>
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<div> <span
style="color:rgb(0,0,0);font-family:"Times New
Roman";font-size:medium">An </span><span
class="gmail-cn"
style="color:rgb(0,0,0);font-family:"Times New
Roman";font-size:medium">sRGB</span><span
style="color:rgb(0,0,0);font-family:"Times New
Roman";font-size:medium"> chunk or </span><span
class="gmail-cn"
style="color:rgb(0,0,0);font-family:"Times New
Roman";font-size:medium">iCCP</span><span
style="color:rgb(0,0,0);font-family:"Times New
Roman";font-size:medium"> chunk, when present and
recognized, overrides the </span><span class="gmail-cn"
style="color:rgb(0,0,0);font-family:"Times New
Roman";font-size:medium">cHRM</span><span
style="color:rgb(0,0,0);font-family:"Times New
Roman";font-size:medium"> chunk.</span></div>
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<div>that seems to imply the calibration chunk should be ignore
in the presence of an sRGB chunk -- which I believe is our
case, isn't it?<br>
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I do not see either an sRGB chunk or an iCCP chunk in "A.png", Paulo
:<br>
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<img src="cid:part2.0C65A471.324C93FB@Hellenic-Institute.Uk" alt=""><br>
<br>
That is not to say that neither is there, but "TweakPNG" does not
display them, so one or both <i>may</i> be missing.<br>
Philip Taylor<br>
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