On 10/2/07, Simetrical Simetrical+wikilist@gmail.com wrote:
On 10/2/07, Emanuele D'Arrigo manu3d@gmail.com wrote:
Ok, but when is a TIFF ever better than a PNG in a web-publishing context? When is a PNG "loosing" any information that is useful in such context?
The point is, you're right that it's not losing any information useful for actual display. The information it's losing is only useful for subsequent editing and use in other formats. But we *want* to enable subsequent editing and use in other formats, as well as simple Web display.
Useful for subsequent editing?
Only if the tiff is high-dynamic-range or layered. For HDR images there are better formats we could support (radience .hdr, or openexr), and for layered images I don't believe many applications will correctly handle layered tiffs, so tiff isn't a good format there either. :(
Still, I see the argument for tiff as a source format .. but right now we don't support a *lot* of other 'source formats'. If we come up with a good way to approach source files in general then we'd probably also resolve all the cases where there is a good argument to use tiff.