The Core Exposure Triangle

ISO, aperture, shutter, priority modes, and bulb integration

Shipped: 10
Partial: 2
Total: 12

Features in this section

1.1

ISO 3 to 12800 range

Full ISO range from slow black-and-white to ultra-fast colour stocks.

Equipment tab > Film Stocks, or Viewfinder > ISO chip

1.2

Aperture f/0.95 to f/64 with half/third stops

Pick aperture in full, half, or third stops across the entire practical range.

Viewfinder > Aperture chip, or Equipment tab > Lenses

1.3

Custom f-stop entry

Type any f-number for unusual or vintage lenses.

Equipment tab > Lenses > Add Custom Lens, or Viewfinder > Aperture chip > Custom

1.4

Shutter 1/8000 to multi-minute

Shutter speeds from 1/8000 down to multi-minute long exposures.

Viewfinder > Shutter chip

1.4a

Bulb mode integration

Bulb is a first-class shutter setting across the metering pipeline.

Equipment tab > Cameras / Lenses (hasBulb checkbox), surfaces in Viewfinder shutter recommendations

1.5

How the Bulb Timer works

Stopwatch for long exposures with optional haptic and voice cues.

Tools tab > Bulb Timer

1.6

Bulb auto-lock via gyro when steady

Timer waits for the phone to stop wobbling before it starts the count.

Tools tab > Bulb Timer > Gyro auto-start toggle

1.7 Partial

ISO Priority pin

Pin ISO and let aperture and shutter both vary; not yet wired.

1.8

Aperture Priority

Hold aperture; the solver picks the matching shutter.

Viewfinder > Priority Mode chip > Aperture

1.9

Shutter Priority

Hold shutter; the solver picks the matching aperture.

Viewfinder > Priority Mode chip > Shutter

1.10

EV lock hold reading

Lock the meter so the next reading does not overwrite this one.

Viewfinder > Hold Reading button (bottom area, after a reading is active)

1.11 Partial

Film Latitude Lock auto-constraint

Constrain the solver to stay inside the loaded film's latitude; not yet wired.