光尺 vs Optaxis

光尺是专为胶片摄影师打造的“暗光克星”与“测距神器”。我们将专业的测光表与精密的激光测距仪合二为一，旨在解决旁轴与估焦相机在复杂环境下的拍摄难题。无论是微光夜景还是快速抓拍，光尺都能助你精准出片。 【核心功能】 首创暗光测光引擎 突破传统手机测光极限，专为微光环境调校。在极暗环境下依然能提供精准的曝光读数，让你的夜景胶片不再欠曝。 LiDAR 激光精准测距 调用 Apple LiDAR 激光雷达技术，实现厘米级精度的实时测距。彻底告别“黄斑老化看不清”和“全凭感觉估焦”的窘境，让每一次快门都清晰锐利。 智能倒易律补偿 内置主流胶卷倒易律数据库。无需查表，无需心算，只需选择胶卷型号，App 自动计算长曝光所需的补偿时间。 【解决痛点】 拯救废片： 解决夜景拍摄因测光不准导致的死黑问题。 解放大脑： 告别繁琐的倒易律计算公式和随身携带的纸质表格。 老机新生： 即使是黄斑对焦失效的老相机，也能通过“光尺”获得现代化的对焦体验。 【适用人群】 胶片/模拟摄影发烧友 旁轴相机 (Leica M系列等) 及估焦相机 (Rollei 35等) 玩家 热衷于城市夜景与长曝光创作的摄影师

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