Lento: Long Exposure Camera

Slow shutter on iPhone, no ND filter. Silky waterfalls, light trails at night, crowd-free landmarks, star trails in Bulb mode. Stacked live, saved as RAW DNG.

Lento turns your iPhone into a slow shutter camera. It stacks frames live while the shutter is open, so waterfalls go silky, headlights streak into light trails, and crowds fade out of landmarks. No ND filter, no editing afterwards. Made for night photography and anything that moves.

SMOOTH Averages every frame. Water turns to silk, clouds stretch, a busy street calms down. Works in daylight without a filter.

LIGHT TRAIL Keeps the brightest pixel. Car headlights, neon, sparklers, fireworks. Switch to Bulb and let it run for star trails.

GHOST REMOVE Keeps only what stays still. Tourists walking through the frame disappear, the building behind them stays. Swipe to compare before and after.

MANUAL CONTROLS ISO, white balance, exposure compensation and focus, each on its own ruler. Self-timer, level and grid. Live readouts for ISO, aperture and shutter update as you shoot.

WATCH IT BUILD The exposure forms on screen in real time, with a frame counter and elapsed time. What you see is what gets saved.

PRO EXPORT RAW DNG at 16-bit, HEIF or JPEG. 8 megapixels (3264×2448) with full EXIF: ISO, aperture, focal length, exposure time, GPS.

Free: Smooth and Light Trail, up to 5 seconds, HEIF, one watermarked export in total. Pro: Ghost Remove, 9 to 60 seconds plus Bulb, RAW DNG and JPEG, manual controls, no watermark, unlimited exports.

Privacy Policy: https://github.com/heocoi/privacy-policy/blob/main/lento.md Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/