LumiSnap

LIGHT MEASUREMENT, IN FOCUS

See light.
Measure more.

Turn HDR photographs into luminance maps.
Capture on iPhone. Calibrate and explore on desktop.
Built for lighting research and teaching.

Explore LumiSnap
LumiSnap desktop showing a false-colour fisheye luminance map of an interior
REAL LIGHT. A DIFFERENT PERSPECTIVE.False-colour luminance · cd/m²
One workflow. Across devices.

macOS · Windows · Linux · iPhone

01 / LUMISNAP DESKTOP

From photographs
to a clearer picture.

Bring your bracketed JPEGs, Radiance HDR images or iPhone sessions into one workspace for calibration and analysis.

01

Merge & prepare

Combine bracketed JPEGs into linear HDR. Align exposures, correct fisheye geometry and apply vignetting corrections.

02

Calibrate & inspect

Connect image values to spot-meter readings. Explore luminance in cd/m² with false colour, iso-lines and region statistics.

03

Analyse & export

Explore illuminance and glare with Ev, DGP and UGR, compare with evalglare, and export HDR, PNG and CSV results.

Desktop calibration workspace with spot-meter readings placed on a fisheye photograph
Make the connection to measured light.
Desktop glare analysis with detected light sources and analysis results
Understand the bright spots.

02 / LUMISNAP FOR IPHONE

Your field kit.
In your pocket.

Capture exposure brackets, merge HDR and inspect luminance with a native iPhone app.

  • Adaptive Bayer RAW capture on supported devices
  • Saved sessions with false-colour and coverage views
  • Image-point calibration with spot-meter readings
  • Portable session ZIPs for the desktop workflow
See how they work together

Capture capabilities depend on your iPhone, lens and iOS version. Physical measurement validation is required.

LumiSnap on iPhone displaying a false-colour luminance image, legend and display-range controls

03 / FROM FIELD TO FINDINGS

Keep the whole
picture together.

CAPTURE

Start with the scene.

Shoot an exposure sequence on iPhone or use bracketed JPEGs from your camera.

CALIBRATE

Add your reference.

Use spot-meter readings to scale the HDR image to measured luminance.

EXPLORE

Take it further.

Export a finished iPhone session to desktop with its saved HDR and measurement data, then inspect and share your results.

GET LUMISNAP

A new view
of your lighting.