imaiden
Level 1
(10 points)
Q: Is Color Luma Curves the same as 'HueCureves' node with luminance selected?
In Apple Color there are the "Luma Curves". Is this the exact same thing as the 'HueCureves' node with the luminance selected?
here is what I am talking about in Apple Color
http://www.vimeo.com/3418777
here is what I am talking about in Apple Color
http://www.vimeo.com/3418777
Mac OS X (10.5.4)
by stuckfootage,Solvedanswer
stuckfootage
Level 4
(3,040 points)
No, the Curves Controls in Color consists of lookup tables.
The Luma Curve in Color corresponds to using Shake's LookupHLS node
with lExpr (luminance) selected.
The other three curves in Color correspond to using the Lookup node
with rExpr, gExpr, and bExpr selected.
Lookup tables map input channel values to output channel values.
(Color manual page 190). Shake's HueCurves node maps input hue
to the amount that hue is boosted or cut.
If you have experience in audio, it might make sense to think of
a lookup table as a dynamics processor (compressor or expander),
whereas a hue curve is like a filter (graphic equalizer).
The Luma Curve in Color corresponds to using Shake's LookupHLS node
with lExpr (luminance) selected.
The other three curves in Color correspond to using the Lookup node
with rExpr, gExpr, and bExpr selected.
Lookup tables map input channel values to output channel values.
(Color manual page 190). Shake's HueCurves node maps input hue
to the amount that hue is boosted or cut.
If you have experience in audio, it might make sense to think of
a lookup table as a dynamics processor (compressor or expander),
whereas a hue curve is like a filter (graphic equalizer).
