light & deep

Light & Deep is a viewfinder, light meter and LiDAR rangefinder for film, cinema and custom made cameras.

Choose your format and focal length, meter the light and measure your subject distance. With Pro (one purchase, no subscription), see the estimated depth of field as zebra stripes over the live scene, and watch it change as you adjust the aperture.

Originally built for a handmade camera without a finder or meter, it brings the same practical tools to medium-format, large-format and panoramic photography.

SEE DEPTH OF FIELD — PRO
Explore which nearby parts of your scene would be sharp for your format, focal length, aperture and focus distance. Open the aperture and the highlighted zone narrows. Stop down and it grows.

METER THE LIGHT
Set your film ISO, choose aperture or shutter priority, and read the corresponding exposure setting. Pro adds spot metering and calibration for each iPhone lens.

FRAME YOUR SHOT
Set your format and focal length to preview composition. Free offers 35mm full frame and 6x6 medium format. Pro offers 53 film, digital and cinema formats, including large format, XPan, Instax, Polaroid, Super 8, and IMAX.

MEASURE THE DISTANCE
On a LiDAR-equipped iPhone, tap a point to measure its distance. The free distance zebra highlights surfaces near the selected distance. Pro adds depth-of-field visualization and can keep measuring a fixed point in the scene even as you move the phone.

SAVE A REFERENCE — PRO
Keep a reference photo with a settings strip and image metadata. Record aperture, shutter speed, ISO, format, focal length, distance, a film note and optional location, so you can refer back to your setup later.

FREE, WITH NO TIME LIMIT
• Reflective light meter with aperture and shutter priority
• 35mm full-frame and 6×6 frame overlays
• Focal-length control
• LiDAR distance measurement, tap-to-measure and target-distance zebras on supported hardware

PRO - ONE PURCHASE, NO SUBSCRIPTION
• Depth-of-field visualization on supported hardware
• All 53 formats
• Spot metering and light-meter calibration
• Reference photos with settings and metadata
• Fixed-point distance tracking
• Ultrawide camera support on compatible devices
• Black-and-white view and virtual horizon
• Frame, zebra and crosshair customization
• Parallax correction for a phone mounted on a camera
• Cinema tools: shutter angle, project frame rate and anamorphic squeeze

Pro is an optional one-time in-app purchase. The free features remain available without upgrading.

REQUIREMENTS
iPhone with iOS 17.6 or later. Distance measurement, distance zebras and depth-of-field visualization require a LiDAR-equipped iPhone: iPhone 12 Pro or 12 Pro Max, or a later model with LiDAR. Metering and framing work without LiDAR.

LiDAR is intended for nearby subjects, with a useful range of about five metres depending on conditions. Depth coverage is limited to the central area in ultrawide view. The depth-of-field overlay estimates acceptable sharpness; it does not simulate lens bokeh or guarantee the final photograph's sharpness.

PRIVACY
No account, ads or analytics. Camera, depth and exposure processing happens on your device. Optional location data is used when you choose to include it in a reference photo.