Skip to content Before moving on from the 10 W head, Russ revisits greyscale claims using black anodised aluminium. Because the surface is essentially a binary coating, the test provides a useful way to separate true tonal control from patterns of differently spaced marks.
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What You’ll Learn
- Why black anodised aluminium is not naturally a continuous greyscale material.
- How dot spacing and dithering can create the visual impression of grey.
- How the beam’s damage profile changes with exposure.
A Binary Surface Can Still Look Grey
The coating is largely either present or removed, yet the eye can perceive intermediate tones when black and light areas are mixed at a fine scale. That is different from creating a continuously variable shade in the material itself.
What the Beam Leaves Behind
Russ also uses the test to examine how the 10 W beam widens and changes with exposure, reinforcing the relationship between apparent image tone and the physical mark produced.
Why This Session Matters
It clarifies the distinction between physical greyscale and visually simulated greyscale.
This page is a concise overview of the original video rather than a full transcript.
