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Clarity

ToolSets / Lens

Lens

2026-09-07

ToolSets/lens/clarity.nk

clarity

contrast

lens

blur

grade

utility

mask

View on GitHub

Multi-scale local contrast control for Nuke, with a clarity range from soften to sharpen, optional log working space, mix, and mask.

Clarity adjusts local contrast with a stack of blurs at increasing sizes, blended and recombined through divide and multiply merges. The clarity control runs from −1 to 1 so you can soften or punch up mid-frequency detail without a separate sharpen node.

Enable log to process in Cineon space and convert back on output, which keeps the effect more stable on log plates. Mix blends the result with the input; the mask input limits where the effect applies.

Use it on beauty grades, CG integrates, or plates when you need controllable clarity rather than a simple unsharp pass.

Script code

set cut_paste_input [stack 0]
version 9.0 v7
push $cut_paste_input
Group {
 name clarity
 tile_color 0x421010ff
 selected true
 xpos -2240
 ypos 814
 addUserKnob {20 User l clarity}
 addUserKnob {7 cc l clarity R -1 1}
 addUserKnob {6 log -STARTLINE}
 addUserKnob {41 which l mix T Dissolve1.which}
 addUserKnob {26 ""}
 addUserKnob {26 lbl l "" +STARTLINE T "clarity v1.1"}
 addUserKnob {22 btn l DerekVFX.ca T "nuke.tcl('start', 'https://derekvfx.ca')" +STARTLINE}
}
 Input {
  inputs 0
  name mask
  xpos 37
  ypos 138
  number 1
 }
 Input {
  inputs 0
  name Input
  xpos -114
  ypos -386
 }
set N5906b400 [stack 0]
 Colorspace {
  colorspace_out Cineon
  name Colorspace1
  xpos -312
  ypos -386
  disable {{"parent.log != 1"}}
 }
 Dot {
  name Dot1
  xpos -278
  ypos -337
 }
set N5906bc00 [stack 0]
 Blur {
  size {{1*cc*10}}
  mix 0.5
  name Blur1
  xpos -894
  ypos -245
 }
push $N5906bc00
 Blur {
  size {{2*cc*10}}
  mix 0.5
  name Blur2
  xpos -794
  ypos -245
 }
push $N5906bc00
 Blur {
  size {{4*cc*10}}
  mix 0.5
  name Blur3
  xpos -694
  ypos -245
 }
push 0
push $N5906bc00
 Blur {
  size {{8*cc*10}}
  mix 0.5
  name Blur4
  xpos -594
  ypos -245
 }
push $N5906bc00
 Blur {
  size {{16*cc*10}}
  mix 0.5
  name Blur5
  xpos -494
  ypos -245
 }
 Blend {
  inputs 5+1
  weight0 3.48
  weight1 2.72
  weight2 2.04
  weight3 1.57
  weight4 0.99
  name Blend1
  xpos -494
  ypos -175
 }
set N5914e400 [stack 0]
 Dot {
  name Dot2
  xpos -460
  ypos 80
 }
push $N5906bc00
push $N5914e400
 Merge2 {
  inputs 2
  operation divide
  name Merge3
  xpos -407
  ypos -94
 }
push $N5906bc00
 Merge2 {
  inputs 2
  operation multiply
  output {rgba.red rgba.green rgba.blue -rgba.alpha}
  name Merge2
  xpos -312
  ypos -10
 }
 Switch {
  inputs 2
  which {{"cc < 0 "}}
  name Switch1
  xpos -312
  ypos 76
 }
set N59524c00 [stack 0]
 Colorspace {
  colorspace_in Cineon
  name Colorspace2
  xpos -312
  ypos 138
  disable {{"parent.log != 1"}}
 }
push $N5906b400
 Dissolve {
  inputs 2+1
  which 1
  name Dissolve1
  xpos -114
  ypos 132
 }
 Output {
  name Output1
  xpos -114
  ypos 265
 }
push $N59524c00
 Viewer {
  frame_range 1001-1001
  colour_sample_bbox {0.6162109375 0.0556640625 0.6171875 0.056640625}
  samplepoints {{-0.380859375 0.224609375}
    }
  input_process false
  name Viewer1
  xpos 534
  ypos 819
 }
end_group