v1.0.0 — EL Zone / False Color toggle + legends

SIGMA fp firmware Ver.5.02 only (not the fp L, not other versions). Unofficial; RAM only, nothing is written to flash.

Install

1. Camera: Menu → Custom → button settings → assign False Color to a button.
2. Copy AutoRun.txt to the root of the SD card (only one AutoRun.txt on the card).
3. Camera off, battery out 10 seconds, battery in, start. Wait for "fp ELZone/FC ready" the first time.

Use

• Short press: colours on / off. The legend comes back as you last left it (hidden after each start).
• Half-second hold: show or hide the legend while the colours are on (a hold while off turns on colours and legend).
• EL ZONE style shows the EL Zone legend; FALSE COLOR style the False Color legend. EL Zone labels beyond clipping are red: +4…+6 at ISO 100/200, +6 at ISO 400/3200 (from a published latitude chart, not yet measured per ISO).

Remove

Delete AutoRun.txt, battery out 10 seconds, start again. The power switch alone keeps the card in memory.

Files

• AutoRun.txt — the card (SHA-256 dcd94fe4176c8c2698d754a612abc078a79db9aa6c350b0df2e4d0ba49902b44)
• fp-ELZone-FalseColor-toggle-legends-v1.0.0.zip — the card plus READ-ME-FIRST.txt

Built from commit 9635b9e with ./build.sh; every build passes the replay and 91-scenario emulator checks (./test.sh). Tested on one camera — reports welcome.

Credits: lachgil (sigma-fp-lab), bei / ijigen (fpSup), Andy_hal9000.