Observed arrival · 2026-10-10
Raycat’s lens lesson puts a cat in the model
An interactive camera-optics lesson pairs a 3D lens cutaway and ten manipulable figures with a narrated walkthrough.
○Open
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$Paid
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People learning basic camera optics
- Worth noticing
- The focus demo places a ginger cat 1.5 metres away and shows rays meeting on the sensor.
Field notes
The focus-ring model places its cat 1.5 metres from the camera and illustrates focus when light rays converge on the sensor. The camera lesson is marked as ten chapters and ten figures, with an interactive 3D cutaway and a narrated video; the voice is explicitly identified as synthetic. Raycat says the optical rays, blur, and angles are formula-based, and says it will use topic suggestions to choose future explainers.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue