You found the perfect spot. The light is right. You frame the shot. And then a tourist walks through. Sound familiar?

Traditional photographers solve this with ND filters and 30-second exposures on a tripod. Photoshop users clone-stamp people out frame by frame. But if you have an iPhone, there is a faster way that works in real-time, no editing required.

Why Long Exposure Removes People

When you stack dozens of frames together using median blending, anything that moves between frames gets averaged out. The static background (buildings, landscape, sky) stays sharp because it appears in the same position every time. People walking through appear in different positions across frames, so the algorithm discards them.

This is not new. Landscape photographers have used this technique with DSLRs and ND filters for years. The difference is that you can now do it on your iPhone in real-time.

The Live Photo Method (Limited)

Apple's built-in long exposure effect works with Live Photos, but it has a hard limit: 3 seconds of footage. That is rarely enough to remove people unless they are sprinting through your frame. Slow walkers, people standing still, or anyone lingering will still appear as ghostly blurs.

The Frame Stacking Method (Better)

A dedicated long exposure app like Lento captures frames continuously and blends them in real-time using your iPhone's GPU. The key is median blending, which picks the middle value for each pixel across all captured frames.

Here is how it works in practice:

  1. Open Lento and select Ghost Remove mode (this uses median blending).
  2. Frame your shot and hold your phone steady. A tripod helps but is not required.
  3. Tap the shutter and let it capture for 15 to 60 seconds. The longer you wait, the more complete the removal.
  4. Watch the preview. People disappear in real-time as frames accumulate.
  5. Stop capture and export. The result is a clean scene with no editing needed.

When It Works Best

  • Crowded landmarks: Tourists constantly moving through the frame get removed completely.
  • Busy streets: Pedestrians and cars disappear, leaving empty roads and buildings.
  • Beach scenes: People walking along the shore vanish after 30 seconds of capture.

When It Does Not Work

  • Stationary people: Someone sitting on a bench for the entire capture will remain. They need to move at some point.
  • Very sparse crowds: If only one person walks through once, median blending may not fully remove them. More traffic means better removal.
  • Your own reflection: If you are shooting through glass, your reflection stays since it does not move.

Tips for Better Results

Shoot longer. A 10-second capture might leave traces. A 60-second capture with steady foot traffic will give you a clean frame.

Keep the camera still. Even handheld, try to brace your phone against a wall, railing, or your bag. Less camera movement means sharper static elements.

Pick a busy time. Counterintuitive, but more people moving means faster removal. A crowded plaza at noon clears faster than a quiet side street.

Check the preview. Lento shows the blend building in real-time. When the scene looks clean, stop capturing.

Compared to AI Removal Tools

Apps like TouchRetouch and Photoshop's Generative Fill can remove people in post, but they guess what is behind the person. The result can look unnatural, especially with complex backgrounds. Frame stacking does not guess. It uses real pixel data from frames where that spot was empty.

The trade-off: AI tools work on any existing photo. Frame stacking only works at capture time. If you are at the location and can wait 30 seconds, frame stacking gives a more accurate result.