Anaglyph

In Resolve 21 Anaglyph exposes three physical inputs: orange Left Eye, green Right Eye and blue Effect Mask. In normal separate-eye mode the Left and Right views arrive on two image cables while Effect Mask remains an independent spatial gate.

With Stack Horiz or Stack Vert the topology changes: the entire stereo pair arrives only through the orange Left Eye Input. For a horizontal stack, the left half is the left eye and the right half is the right eye, and the output becomes half the source width.

For a vertical stack, the bottom half is the left eye and the top half is the right eye, and the output becomes half the source height. Packed topology therefore should not be illustrated with a fabricated second Right cable.

Method and Color Type solve different problems. Color Type selects the filter/glasses channel pair while Method defines how the two eye images are mathematically encoded into those channels.

Monochrome converts both eyes to luminance before channel encoding and is usually the clearest technical preview because color competes less with disparity, eye order and stereo geometry.

Half-color preserves more right-eye chroma while keeping the left eye luminance-based. Color uses matching source color channels from both eyes and retains more original color, although saturated colors can increase binocular rivalry.

Blackmagic explains Optimized using the Red/Cyan case: it compensates for the strong perceived-brightness imbalance between red and cyan eyes and can reduce retinal/binocular rivalry. It is an encoding improvement, not a stereo-alignment tool.

Dubois uses a dedicated color matrix intended to reduce rivalry and ghosting. Blackmagic explicitly notes that Fusion's matrix is designed for Red/Cyan glasses and the spectral characteristics of older CRT phosphors, so modern LCD viewing still needs real-glasses QC.

Swap reverses eye assignment. If foreground/background depth feels inverted it is a useful diagnostic, but Swap does not repair vertical misalignment, lens mismatch, synchronization, convergence or excessive parallax.

Left Layer and Right Layer belong to stereo/multilayer routing. The captured Resolve Inspector shows Auto (Left)/Auto (Right), Match and Default Layer; these choices do not replace the physical eye inputs or manufacture stereo from a mono source.

Effect Mask limits stereoscopic creation to selected pixels. It is not a third eye, a disparity map or a replacement for source alpha; the image pair and spatial coverage are separate data paths.

Anaglyph is normally a downstream representation/delivery node. Geometry, vertical alignment, disparity/convergence and inter-eye color matching should be corrected upstream before final anaglyph encoding.

Anaglyph necessarily sacrifices ordinary color fidelity because the two views share color channels. It is excellent for accessible stereo preview and specialized delivery, but it is not a neutral color-master representation.

Resolve 21 documents Stereo Nodes as Studio-only functionality. The article therefore treats availability as an edition boundary rather than assuming the node exists in every free or standalone configuration.