Negative Darkroom

Simulate a negative film enlargement in an analog darkroom.
Characteristic curve
Hardcoded characteristic curve and color data
name: curve type: enum
Exposure
Base enlargement exposure
name: exposure type: double default: -9.00 minimum: -20.00 maximum: 10.00 ui-minimum: -15.00 ui-maximum: 0.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3
Filter cyan
Cyan exposure compensation for the negative image
name: expC type: double default: 0.00 minimum: -3.00 maximum: 3.00 ui-minimum: -3.00 ui-maximum: 3.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3
Filter magenta
Magenta exposure compensation for the negative image
name: expM type: double default: 0.00 minimum: -3.00 maximum: 3.00 ui-minimum: -3.00 ui-maximum: 3.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3
Filter yellow
Yellow exposure compensation for the negative image
name: expY type: double default: 0.00 minimum: -3.00 maximum: 3.00 ui-minimum: -3.00 ui-maximum: 3.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3
Clip base + fog
Clip base + fog to have a pure white output value
name: clip type: boolean default: True
Density boost
Boost paper density to take advantage of increased dynamic range of a monitor compared to a photographic paper
name: boost type: double default: 1.00 minimum: 1.00 maximum: 3.00 ui-minimum: 1.00 ui-maximum: 3.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3
Dodge\/burn multiplier
The f-stop of dodge\/burn for pure white\/black auxillary input
name: dodge type: double default: 1.00 minimum: -4.00 maximum: 4.00 ui-minimum: -4.00 ui-maximum: 4.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3
Enable preflashing
Show preflash controls
name: preflash type: boolean default: False
Cyan preflash
Preflash the negative with cyan light to reduce contrast of the print
name: flashC type: double default: 0.00 minimum: 0.00 maximum: 1.00 ui-minimum: 0.00 ui-maximum: 1.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3 visible:preflash
Magenta preflash
Preflash the negative with magenta light to reduce contrast of the print
name: flashM type: double default: 0.00 minimum: 0.00 maximum: 1.00 ui-minimum: 0.00 ui-maximum: 1.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3 visible:preflash
Yellow preflash
Preflash the negative with yellow light to reduce contrast of the print
name: flashY type: double default: 0.00 minimum: 0.00 maximum: 1.00 ui-minimum: 0.00 ui-maximum: 1.00 ui-gamma: 1.00 ui-step-small: 0.00 ui-step-big: 0.10 ui-digits: 3 visible:preflash
name: gegl:negative-darkroom
pads: aux input output
parent-class: GeglOperationPointComposer
categories: color
GEGL This page is part of the online GEGL Documentation, GEGL is a data flow based image processing library/framework, made to fuel GIMPs high-bit depth non-destructive editing future.