On Mon, 23 Feb 2015, Elle Stone wrote:
Floating point tiff doesn't seem to be as well supported as OpenEXR in the
various free/libre editing applications. For example at present Krita 2.9
can't read or write a floating point tiff but reads and writes OpenEXR
images with no problems.
Most "free/libre editing applications" do not natively use floating point to
store internal raster data and they display their data using interfaces which
only support 8 integer bits per sample. OpenEXR is useful to store floating
point data. The whole path may not be loss free unless it is round-tripped
in the same format.