Aperture Light Meter

Aperture Light Meter is the essential analog light meter, Zone System calculator, and exposure log built for film photographers, vintage cameras, and manual photography. Calculate exact aperture, shutter speed, and ISO settings for 35mm, 120, and medium format film while tracking every shot on your roll with an integrated film frame counter and visual EXIF log.

Precise Metering & Zone System Control
Achieve perfect exposure using high-precision light metering designed specifically for the dynamic range of film stock. Evaluate contrast with Zone System metering, calculate spot exposure values (EV), and pre-visualize tonal range with real-time Black & White monochrome vision. Whether you shoot Kodak, Ilford, CineStill, or Fujifilm, Aperture ensures you lock in accurate exposure before pressing the shutter.

Continuous Film Frame Counter & Visual Shot Log
Track your roll frame-by-frame just like a physical camera counter. The built-in Film Frame Counter advances automatically from frame 0 to 36, resynchronizes seamlessly when edited, and supports linear extensions for bulk-loaded or long rolls. Store digital reference photos stamped with complete EXIF metadata, including ISO, aperture, shutter speed, date, and frame number. Dim exposures are automatically flagged with a red low-light alert in your gallery for instant metering review when your lab scans return.

Built for Vintage Cameras & Analog Workflows
Designed to complement 35mm rangefinders, TLRs, SLRs, and medium format systems like Leica, Hasselblad, Pentax, Mamiya, Nikon, and Canon. Customize aperture and shutter speed bounds to match your camera’s exact capabilities, or select fast lens presets for street, landscape, low-light, and portrait shooting scenarios.

Fast, Minimal, and Ad-Free
Aperture is a lightweight, distraction-free utility crafted for your photography workflow. No ads, no subscriptions, and no hidden in-app purchases. Pay once and own a reliable analog light meter built strictly for photographers who care about their craft.

Download Aperture Light Meter today to stop wasting film and start capturing perfectly exposed shots on every roll.