the transfer functions defined by standards, the
default is the value defined by the standard.  If you specify anything
else, you will be varying from the standard.  For the simple power
function transfer function, the default gamma is 1/.45.

<A NAME="lbAF">&nbsp;</A>
<H2>OPTIONS</H2>

<DL COMPACT>
<DT><B>-ungamma</B>

<DD>Apply the inverse of the specified transfer function (i.e. go from
gamma-corrected nonlinear intensities to linear intensities).

<DT><B>-cieramp</B>

<DD>Use the CIE Rec. 709 gamma tran