Long Exposure on iPhone.
Frame by Frame.
The long exposure camera app that turns your iPhone into a slow shutter machine.
Silky water. Light trails. Ghost removal. No ND filter needed.
Shot with Lento
Silky water, no ND filter
Every streak of light kept
Tourists gone, scene stays
Manual Control
RAW Export
4032x3024 / 16-bit / P3 / Full EXIF
How Frame Stacking Works
Capture
Lento captures frames continuously at 30fps using your iPhone camera, just like shooting video.
Stack
Each frame is blended in real-time on the GPU using Metal compute shaders. Choose from mean, lighten, or median blending.
Export
Get your long exposure photo in RAW DNG, HEIF, or JPEG. Full 12MP resolution with P3 wide color.
Unlike traditional long exposure photography that requires ND filters and a tripod, Lento uses computational photography to stack frames digitally. This means you can shoot silky waterfall photos, capture light trails at night, or remove crowds from landmarks — all handheld, with just your iPhone.
Free
$0- Smooth + Light Trail modes
- HEIF output
- 5 second limit
- 1 export included
- Watermark on exports
Pro
$9.99/year7-day free trial
- All capture modes
- RAW DNG / JPEG / HEIF
- Full manual controls
- Unlimited duration + Bulb
- Unlimited exports
- No watermark
or $29.99 lifetime
Cancel anytime. Or pay once, keep forever.
Get Lento
Requires iPhone XR or later. iOS 18+.
FAQ
Do I need a tripod for long exposure on iPhone?
No. Lento uses computational frame stacking, not a physical slow shutter. Each individual frame is captured at a normal shutter speed, so camera shake doesn't affect the result. You can shoot handheld, though a tripod gives sharper results for very long exposures.
How is Lento different from the iPhone's built-in Long Exposure effect?
The iPhone's Live Photo long exposure effect only works with 3 seconds of footage captured after the fact. Lento captures in real-time with a live preview, supports unlimited duration, gives you full manual control over ISO and focus, and exports in RAW DNG format.
Can I shoot RAW long exposure photos on iPhone?
Yes. Lento Pro exports 16-bit DNG files at full 12MP resolution in the P3 wide color space with complete EXIF data. No other long exposure app on iPhone offers RAW export.
What's the maximum exposure time?
Free users can capture up to 5 seconds. Pro unlocks unlimited duration, so you can shoot for minutes or even hours. There's also a Bulb mode where you control the shutter manually.
What iPhone models are supported?
Lento requires iPhone XR or later (A12 chip with Metal 2 GPU). It runs on iOS 18 and later.
How much does Lento Pro cost?
Lento Pro is $9.99 per year with a 7-day free trial, or $29.99 as a one-time lifetime purchase. Both options unlock all capture modes, RAW DNG export, full manual controls, unlimited duration, and remove the watermark.
From the Blog
How to Remove People from Photos on iPhone
Remove tourists and crowds using long exposure frame stacking. No editing needed.
Read moreiPhone Night Photography: Beyond Night Mode
Light trails, smooth city reflections, and star trails with long exposure.
Read moreLong Exposure Without a Tripod
Handheld techniques for silky water and ghost removal on iPhone.
Read more