Light Meter・Exposure Meter

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Measure exposure in real time using your phone as a photography light meter. Get real-time EV readings and let the app calculate the perfect exposure triangle for any scene.

REAL-TIME EV METERING Point your device at any scene and instantly see the exposure value (EV). The live meter continuously updates as lighting conditions change, giving you instant readings for photography exposure decisions.

EXPOSURE TRIANGLE CALCULATOR The app displays the three pillars of exposure: aperture (f-stop), shutter speed, and ISO sensitivity. Set one or two parameters and the meter automatically solves for the rest, showing you the correct combination for proper exposure.

THREE PRIORITY MODES Choose the shooting mode that fits your workflow:

• Aperture Priority (A) — set your desired f-stop and the meter calculates the matching shutter speed
• Shutter Priority (S) — lock in your shutter speed and the meter determines the right aperture
• Manual (M) — control both aperture and shutter speed yourself while the meter shows the EV deviation from correct exposure

SAVE AND CALIBRATE READINGS Save your measurements for reference and review them later. Calibrate the meter to match your specific device or preferred metering style for consistent, reliable results across different shooting conditions.

PERFECT FOR FILM AND DIGITAL PHOTOGRAPHY Whether you shoot with a vintage film camera that lacks a built-in meter, a fully manual SLR, or a modern digital camera where you want an independent reading, this light meter gives you the exposure data you need. Ideal for outdoor portraits, landscape photography, studio setups, and any situation where reliable metering matters.

TIPS FOR BEST RESULTS

• Hold the device at the subject position for incident-style readings
• Point toward the scene for reflected-style readings
• Use Aperture Priority when depth of field is your creative priority
• Use Shutter Priority when motion control matters most

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