UqariMeslino

UqariMeslino is a pinhole camera design and exposure calculator for hands-on film photography. It calculates the optimal needle diameter using Rayleigh's formula, the camera's focal length and angle of view, the effective f-number, and long exposure correction based on film reciprocity failure. FEATURES • Needle diameter: adjust the focal length and wavelength of light to get the optimal hole size and needle number. • Body and focal length: choose a film format (35 mm, 120 6×6, 4×5 or custom) and see the horizontal and vertical angles of view. • f-number: calculate the effective aperture and the amount of light relative to the f/16 base value. • Exposure: convert a meter reading for a pinhole camera and compensate for long exposures. • Light meter: ISO, the "sunny 16" rule and the scene EV in the most common conditions. • Reciprocity: correction curves for HP5+, Tri-X, Delta 100 and colour films. • Materials list: black card, brass sheet, needle, film and shutter together in one build kit. • Share the exposure record as a text file and keep a shooting log. Enter values with the sliders and all results update instantly. The app works completely offline and requires no sign-in.