https://bugs.kde.org/show_bug.cgi?id=482195

--- Comment #15 from Sjoerd <k...@brinkmail.org> ---
(In reply to Oded Arbel from comment #14)
> (In reply to Sjoerd from comment #13)
> > ... was talking about 200 megapixel photos which is bigger than what I
> > tested with.
> 
> A 200MP image at standard RGB 24bpp is 600MB uncompressed.
> 
> The current default of 256MB is enough to open a 85MP image.

If I read the Qt docs right
(https://doc.qt.io/qt-6/qimagereader.html#setAllocationLimit), it internally
converts images to 32 bits, so the effective limit is smaller. A 200MP image
would then be ~760 MB. 

So to fix the issue for the person who opened this bug the limit would need to
be at least 800 MB.

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