Lumenary vs Crank

Flip your light values between F-stop, T-stop, EV, lux, lumen and FC/foot candles. Convert readings from your light meter, determine T-stop on lenses without a proper T-stop scale, evaluate gear specification, photometrics and lighting needs. Transform shutter angles to shutter speeds, adjust ISO and calibration constant - stay in control. Add filters, modifiers, push/pull to your result to keep track of exposure!

The professional technical standard for high-speed cinematography. Crank is the definitive technical utility for camera departments, designed by industry professionals for DITs, ACs, and Cinematographers. Built for high-pressure environments, Crank provides absolute precision for off-speed frame rates, exposure compensation, and technical camera data—all in a sleek, offline-capable interface. Whether you are matching motion blur between project frame rates or modeling complex ND stacks on a remote location, Crank ensures your technical decisions are made with absolute confidence. KEY FEATURES: 1. ADVANCED OFF-SPEED ANALYTICS Eliminate technical uncertainty when shooting off-speed. Quickly determine the relationship between Sensor FPS and Project FPS. Multiples Mode: Instantly view common speed ratios (2x, 3x, 4x, etc.). Reverse Lookup: Find the exact sensor frame rate needed to hit a specific speed target. 2. PRECISION EXPOSURE ENGINE Master your light with dedicated exposure modeling tailored for cinematography. Exposure Compensation: Determine T-stop adjustments when changing frame rates or shutter angles. ND Filter Stepper: Manage neutral density stacks with ease, converting between Optical Density, ND numbers, and Stop reductions. Visual Shutter Angle: Use the interactive visualizer to understand effective motion blur geometry and shutter speed relationships. 3. PROFESSIONAL CAMERA DATABASE A comprehensive, searchable library of professional camera specifications at your fingertips. Detailed Specs: Access sensor dimensions, base ISOs, mount types, and dynamic range. Format & Frame Rates: Check maximum frame rates across different codecs (ARRIRAW, ProRes) and resolutions. Supported Models: Includes up-to-date data for ARRI (Alexa 35, Mini LF, etc.) and other industry-standard systems. 4. ON-SET UTILITY SUITE Setup Card Export: Generate and share technical camera setup cards with your department via a single tap. Job Presets: Save recurring project settings (Base FPS, ISO, Shutter) for instant recall on different shows. Offline First: No signal? No problem. All core technical features and database tools work entirely offline. WHY CRANK? Crank is a specialized workflow utility. By focusing on the specific needs of the camera department, we’ve removed the clutter found in generic apps to give you the fastest, most reliable path to the technical data you need on set. Built by Emin Atilgan GBCT and Joe Dibble DIT.