Depth Slate
Field depth / browser instrument 01
No image. No upload. No account.
Acceptable focus planner
Place the plane.
Prove the depth.
Check whether two subject distances share acceptable focus before the tripod is locked. Calculations use a conventional circle-of-confusion model—not lens-specific sharpness data.
03
Carry the field note
The same tested geometry becomes a plain-text camera note. Confirm sharpness at the intended output size; circle of confusion is a viewing convention, not a lens guarantee.
DEPTH SLATE / FULL FRAME 50 mm · f/8 · focus 5.00 m Acceptable: 3.39–9.49 m Targets: 4.00–7.00 m / COVERED Hyperfocal: 10.47 m Circle of confusion: 0.030 mm Planning aid — confirm on camera at intended output size.
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