Optaxis vs Lumo Light Meter

Optaxis - Master the Axis, Connect the Like-minded This is not another filter camera app. Optaxis is a pro toolbox and community for 35mm full-frame, medium & large format, Leica, Sony, Fuji, Canon, Nikon, Panasonic, Hasselblad, Phase One, ALPA technical cameras, and film. 23 engineer-grade toolsets (40+ sub-tools), a 1500+ lens spec database, a global community, and an AI assistant - all in one app. 23 PROFESSIONAL TOOLSETS [PRE - PLANNING] - Weather & Light - live weather, golden / blue hour, moonrise & set, clouds - Aurora - regional visibility, cloud + moon factors, 3-day forecast - Burn Sky - multi-day burning-cloud index, probability model, share poster - Tide - tide forecast, photo / surf / fishing presets, multi-day charts - Specialty Weather - sea-of-clouds / rime / alpenglow probability, 28 locations - Field of View & Focal - 7 bodies x 19 backs, 35mm equiv, shift-stitch, image circle, DOF / hyperfocal - Scout - map sun / moon / Milky Way planner, azimuth, rise / set, spot check-in - Plan - pre-shoot planning, gear checklist, WeatherKit, linked log, cloud sync [SHOOT - IN THE FIELD] - Compose - multi-focal overlay, 9 grids, 6 live B&W filters, RGB histogram - AR Viewfinder - live overlay, level, light meter, sun / moon / Milky Way AR, AI Vision - Exposure - exposure triangle, EV, ND, bellows, film reciprocity - Scheimpflug Tilt / Swing - tilt / swing angle, focus distance (to f/64), linked DOF - Live Shift - real-time architectural shift, multi-back image circle, WYSIWYG - Exposure Session - reciprocity, bellows, filter & manual compensation on one screen - Timer - long-exposure countdown, safe shutter speed, cable release - Compass - true / magnetic north, declination, precise bearing [POST - DARKROOM] - Film Dev - 5-step wizard, +/-0.5C control, batch decay compensation, 11 verified recipes - Darkroom - dodge / burn notes, 4 safelights, F-stop test strips, MG filters - EI Calibration - reversal Zone VIII algorithm, community distribution, one-tap share - Reciprocity - reciprocity-failure curves, push / pull, multi-brand reference - Print Size - DPI rating, stitched megapixels, museum-grade, wall-mount preview [LOG - RECORD & SKY] - Diary - gear / params / notes, 12-field film mode, 2 clips, auto EXIF, cloud sync - Astro - star trails (500 / NPF), Milky Way, sun & moon paths, eclipse catalog 2026-2035, meteor showers, 53 stars + 5 planets AR EQUIPMENT ARCHIVE Manage bodies, backs, lenses, filters, kits, and film. Spec library: Leica M/SL/S, Hasselblad XCD/HC, Fuji GF, ALPA HR, Schneider / Rodenstock LF. Side-by-side comparison plus cloud sync. UNCOMPROMISED QUALITY Native HEIC, 10-bit Display P3, up to 80MB originals. Full dynamic range and color for medium and large format. GLOBAL PHOTOGRAPHER COMMUNITY - Multi-image posts - main + 100% detail crops, 9-image upload - Global map - discover nearby, spot check-in, meetups, community studios & dev labs - Hashtags, collections, Daily Inspiration, themed contests - Direct & group chat - text, image, file, equipment cards, params, group events - Voice & video calls - in-call photo + EXIF, equipment cards - Verification badges - ALPA, Cinema Lens, Leica, Hasselblad, Fuji, Large Format - Safety - report, block, moderation, AI pre-upload screening AI PHOTO ASSISTANT XiaoGuang AI - photo critique, captions, bio, log analysis, voice-to-text. Knowledge base across Leica, Hasselblad, Fuji GFX, ALPA, large format. Mention in group chats; CN/EN auto-translate. ARTICLES & NEWS In-depth Tips, industry News, community submissions, auto CN/EN translation. SUBSCRIPTION Free to use all calculators and community features. Pro unlocks the AI photo assistant and more. Monthly and yearly; pricing in-app. Billed through Apple ID, auto-renews, cancel anytime in Settings > Apple ID > Subscriptions. Terms of Use: https://optaxis.app/terms.html Privacy Policy: https://optaxis.app/privacy-policy.html Support: https://optaxis.app/support.html

A light meter, refined for film. Lumo brings precise exposure to your pocket, designed for photographers who care about every frame. Whether you're loading a roll of 35mm or composing on the ground glass, Lumo gives you the readings you need and nothing you don't. Two ways to meter Spot mode for narrow, deliberate readings of a single tone. Matrix mode for evaluative readings across the whole scene. Switch instantly, depending on the shot in front of you. Matched to your camera Choose from a library of film cameras and calibrate Lumo to the body you're shooting. Your meter, your camera, the same readings — frame after frame. Hold and capture Lock a reading to recompose, plan a shot, or compare values across the scene. Capture exposures as you work and return to them when you're ready to release the shutter. Made to disappear A quiet interface that stays out of your way. Custom themes let you tune Lumo to the moment — bright for the studio, dark for the darkroom, low-key on the street. Made for film photographers • Hobbyists and pros shooting 35mm or medium format • Students learning exposure, the Zone System, and the discipline of analog • Anyone who'd rather feel the camera than fight the meter Lumo. Meter every frame with care.