Log2Lin node

This documentation is for version 1.0 of Log2Lin (net.sf.openfx.Log2Lin).

Description

Convert between the logarithmic encoding used in Cineon files and linear encoding.

This plugin may be used to customize the conversion between the linear and the logarithmic space, using different parameters than the Kodak-recommended settings.

Inputs

Input

Description

Optional

Source

No

Mask

Yes

Controls

Parameter / script name

Type

Default

Function

Operation / operation

Choice

Log to Lin

The operation to perform.
Log to Lin (log2lin): Convert the input from logarithmic to linear colorspace (usually after a Read node).
Lin to Log (lin2log): Convert the input from linear to logarithmic colorspace (usually before a Write node).

Black / black

Color

r: 95 g: 95 b: 95

Value in the Cineon file that corresponds to black.

White / white

Color

r: 685 g: 685 b: 685

Value in the Cineon file that corresponds to white.

Gamma / gamma

Color

r: 0.6 g: 0.6 b: 0.6

The film response gamma value.

(Un)premult / premult

Boolean

Off

Divide the image by the alpha channel before processing, and re-multiply it afterwards. Use if the input images are premultiplied.

Invert Mask / maskInvert

Boolean

Off

When checked, the effect is fully applied where the mask is 0.

Mix / mix

Double

1

Mix factor between the original and the transformed image.