Yes, of course. But a "gamma correction curve" can accomplish any number of changes within those fixed endpoints. The illustrated curves increased midrange contrast. Paul
> On 18 Oct 2005 at 6:47, Paul Stenquist wrote: > > > A good illustration. However, I wouldn't say that 02 and 03 are > > "overall" lightening and darkening curves. The end points remain fixed. > > They are midrange lightening and darkening curves. Because the ends are > > ffixed, the brightest highlights and deepest shadows remain unchanged. > > Rather than calling 04 a "gamma correction curve," which cold be > > anything, I would describe it as a curve intended to increase midrange > > contrast. Once again, the ends are fixed. > > Gamma adjustments only effect the input/output relationships of the sample > values between the fixed minimum and maximum values. > > > Rob Studdert > HURSTVILLE AUSTRALIA > Tel +61-2-9554-4110 > UTC(GMT) +10 Hours > [EMAIL PROTECTED] > http://members.ozemail.com.au/~distudio/publications/ > Pentax user since 1986, PDMLer since 1998 >
