Light Meter vs Eos

Light Meter helps you measure exposure in real time and find the right camera settings faster. Designed for photographers and filmmakers, the app turns your iPhone into a practical exposure meter for everyday shoots, studio work, portraits, landscapes, and low-light scenes. Quickly read the light in front of you, lock the settings you want to keep fixed, and let the app calculate the missing exposure value automatically. Whether you are shooting with a digital camera, film camera, cinema camera, or manual lens, Light Meter helps you work with more confidence before you press the shutter. • Live Exposure Reading Measure light in real time and instantly calculate camera-ready exposure settings. • Lock Any Two Controls Choose which two settings stay fixed - ISO, shutter speed, or aperture - and let the meter calculate the third automatically. • Shutter Priority Freeze motion or create blur while the app calculates the right aperture. • Aperture Priority Set your depth of field and let the meter solve the matching shutter speed. • Auto ISO Keep shutter speed and aperture fixed while the meter adjusts ISO automatically. • Spot Metering Tap the preview to meter a specific part of the scene with more precision. • Built for Real Shoots Use it for portraits, landscapes, studio lighting, street photography, film photography, and video exposure planning. Light Meter gives you a fast, visual way to understand exposure before shooting. It is especially useful when working with manual cameras, adapting to changing light, checking mixed scenes, or planning a consistent exposure setup. Simple enough for beginners, precise enough for advanced photographers. Terms of Use: https://www.optionalchaining.com/terms-of-use Privacy Policy: https://www.optionalchaining.com/privacy-policy

Eos tells you when the light will be good where you are — and, unlike most sky apps, whether you'll actually be able to see it. Every calculation that can run on your phone does. The sun and moon maths, the eclipse geometry, your saved spots, your reminders — all of it works with the radio off. No account, no sign-up. WHAT'S WORTH SHOOTING, AND WHEN • Golden hour, blue hour, sunrise, sunset and solar noon for today and any day ahead • Moon phase, illumination, moonrise and moonset • An agenda of the next 7, 14 or 30 days, with each window scored against the cloud forecast so you can see at a glance which evening is worth the drive • Milky Way nights, meteor showers, supermoons, conjunctions, aurora, Space Station passes and noctilucent clouds THE LIGHT ITSELF • A colour forecast that reads the high, mid and low cloud separately — because a thin deck up high is what makes a sunset burn, and a solid deck down low is what kills it • Real sunrise and sunset times behind hills and mountains, not a flat horizon ECLIPSES, PROPERLY • How much of the sun is covered from exactly where you stand, not the headline figure for the country • The view at maximum, drawn from the real geometry • Whether the sun will still be above your skyline when it happens — the question that decides a low-sun eclipse • A clearance map of the ground around you, and your saved spots ranked by which has the cleanest view TOOLS FOR THE SHOT • Plan a shot — when the sun or moon lines up behind a landmark • Plan the frame — how big the disc will sit at your focal length and sensor • Sky AR — point your phone and see where the sun, moon and Milky Way will be • A shoot journal that keeps your photo next to the conditions Eos predicted ALSO • Reminders and a wake-up alarm for the windows you care about • A home-screen widget • A shareable plan card • English, French, Spanish, Italian and German A few features reach for the internet — cloud cover, terrain heights, aurora, Space Station orbits, map tiles. Every one of them is additive. Lose signal and you still have the full sun, moon and eclipse picture. Terrain uses a ground-height model, so it knows about mountains but not trees or buildings. Times can be a few minutes out.