Translate Shutter Angle into Exposure Time for Each Shot — Free
Shutter angle only becomes an exposure duration once frame rate is known. Convert both together before comparing blur across normal-speed and slow-motion shots.
The proof surface
Animation hold-duration tools count displayed frames. This calculates the light-collecting interval inside one frame, not the duration of the finished shot.
Why the flat version breaks
Using timeline playback speed
Retiming footage does not change the interval used when it was captured.
Treating 180 degrees as mandatory
It is a creative setting, not a guarantee of acceptable blur or flicker.
Summing rows into shoot duration
These are per-frame intervals, not shot lengths.
How to work the shutter exposure docket
Use the capture rate, not a later playback rate. A clip captured at 120 fps and played at 24 fps still used the capture setting for exposure.
Enter angles greater than zero and no greater than 360. A camera using shutter speed instead needs a different input conversion.
Exposure milliseconds = 1000 ÷ frames per second × angle ÷ 360. At 24 fps and 180 degrees the interval is about 20.83 ms; at 60 fps it is about 8.33 ms.
Flags mean the interval exceeds your own ceiling, not that the shot is wrong. The summary selects the longest exposure interval, not total production time. Test motion blur and lighting flicker on the actual camera.
What the shutter exposure docket replaces
| Question | Before | Visible working |
|---|---|---|
| Using timeline playback speed | Retiming footage does not change the interval used when it was captured. | Record angles in degrees |
| Treating 180 degrees as mandatory | It is a creative setting, not a guarantee of acceptable blur or flicker. | Convert a fraction of one frame |
| Summing rows into shoot duration | These are per-frame intervals, not shot lengths. | Review the flagged shots |
A local arithmetic aid replaces hand calculation, not expert review. No paid AI service is needed.
Run it on the samples, right here
FIRST-LOAD
Research prototype — checkout unavailable. Input is processed locally and a draft is saved automatically in this browser profile when storage is available. Reset to sample clears that draft; Pro history has its own clear button. A state link encodes your inputs in its URL: share only non-sensitive rows. Browser history, clipboard and anyone receiving the link may retain it. Optional AI use below leaves this device; it is not required.
Camera-setting arithmetic only. No guarantee of flicker-free footage, exposure quality or equipment compatibility; test with the actual lights and camera.
Data note: Everything runs in this browser tab on the shutter exposure docket: your shot | frames per second | shutter angle degrees stays on this device, nothing is uploaded, and the reading is rebuilt only when you press run.
Go deeper: the companion app files the same reading as a clerk's docket sheet
The article demo above runs without limits. The companion app keeps a local history, exports the rows as CSV, prints the shutter exposure docket reading, and holds your drafts on this device — one complete free run; the proposed $4 one-time filing layer is not currently for sale.
The shutter exposure docket reading is complete for free. The optional $4 layer adds print, row CSV and the last five local reading summaries; it does not add hidden answers. Checkout is not configured yet; the article demo remains unlimited.
Open the translate shutter angle into exposure time for each shot companionBoundary
Camera-setting arithmetic only. No guarantee of flicker-free footage, exposure quality or equipment compatibility; test with the actual lights and camera.
What this is built on
- Method: Exposure milliseconds = 1000 ÷ frames per second × angle ÷ 360. At 24 fps and 180 degrees the interval is about 20.83 ms; at 60 fps it is about 8.33 ms.
- All sample records are invented examples. The app does not fetch measurements, policies, files or personal records.
- Google’s official pricing page, fetched 2026-09-29, lists free-tier access including AI Studio. Optional formatting only; limits and availability can change. Free-tier content may be used to improve products. Never paste private records there.
Before: Retiming footage does not change the interval used when it was captured. After: the shutter exposure docket shows the working beside each named row so the reader can change the assumption and inspect the consequence.
Optional AI formatting, not calculation
For this shutter exposure docket, use the free AI Studio interface only if available to you, with no paid API key. Manual entry completes the same workflow for free. Supply only fictional or non-sensitive notes. Review its output against the source; never paste unresolved questions into the numeric rows.
Format my non-sensitive notes for a shutter exposure docket. Return plain rows only: shot | frames per second | shutter angle degrees. Preserve supplied quantities exactly. Do not guess missing values; list questions separately. Do not calculate or add advice. I will check every row before pasting into the local tool.
Accepted schema: shot | frames per second | shutter angle degrees. No AI response is executed as code.