[Image-SIG] Undocumented floating-point TIF support in PIL?

[Fredrik Lundh]

W.T. Bridgman wrote:

> The PIL documentation claims that TIFF files are supported for "1",
> "L", "RGB", or "CMYK" data.
>
> I was examining the Tiff plug-in and did not find anything that
> suggested "F" was unsupported so I tried writing and reading a simple
> floating-point TIFF.  It worked.
>
> Is this just a missing entry in the docs or does anyone know of
> potential gotchas should I start using this new found capability?

the documentation is outdated.  in 1.1.5, the TIFF loader supports
the following modes:

"1"
"CMYK"
"F"
"I"
"I;16"
"I;16S"
"L"
"LA"
"LAB"
"P"
"PA"
"RGB"
"RGBA"
"RGBX"
"YCbCr"

(for a complete list of what TIFF pixel layouts that PIL can read, see the
OPEN_INFO mapping in the TiffImagePlugin).

</F>