TIFF can do premultiplied alpha. The problem with TIFF is that it's such a grab ... | Hacker News

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mark-r on May 11, 2017 | parent | context | favorite | on: Beware of Transparent Pixels

TIFF can do premultiplied alpha. The problem with TIFF is that it's such a grab bag of options, it makes it difficult to know what you're dealing with.

foolrush on May 11, 2017 | [–]

EXR is associated by convention. TIFF mandates it, although with an additional TIFF tag for an "opacity" channel that behaves as unassociated IIRC.

ioquatix on May 11, 2017 | [–]

Thanks - I didn't know that - anything else apart from TIFF?

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