Ghost Overlay Camera: What Does It Do?

A ghost overlay camera app displays an earlier photo as a transparent guide over the live camera view so you can line up your next shot. In Progress Photo: Before After, the ghost comes from a photo in your project. It helps you repeat a viewpoint; it does not search for spirits or add a ghost to your saved picture.

What does “ghost” mean in a camera app?

Here, “ghost” describes the faint appearance of a reference image. Open Camera Help describes a similar feature as a ghost image, while Stop Motion Studio’s manual calls the technique onion skinning or ghosting. A different kind of app uses ghost imagery as a photo effect: Ghost Camera’s Google Play description, for example, says it adds ghost overlays to photographs. Those are different tasks. For matching a new shot to an old one, look for an earlier-photo reference over a live preview. A ghost-hunting label alone does not tell you whether an app has that tool.

Start with a photo in the same project

In Progress Photo: Before After, open the project you want to continue and tap Take today’s photo. For an empty project, the button says Take the first photo, and there is no reference to display yet. Take that first picture, or import an existing photo into the project. Once a reference is available, the camera can show it over the live scene. Keep different subjects or viewpoints in separate projects when you need separate references: the ghost comes from the open project, rather than from whichever image you last viewed elsewhere on your phone.

Choose First photo or Last photo

Last photo uses the most recent dated image in the project; First photo uses the earliest. With only one image, there is no separate source choice to make, so those buttons are hidden. Choose First photo when you want a fixed starting reference across the whole series. Choose Last photo when you want to match the latest shot, such as after deliberately changing the setup. This choice affects which picture you see as a guide, not which pictures are kept. A project’s optional cover photo is separate from the camera’s First photo and Last photo choices.

Adjust how much of the reference you see

The Ghost opacity slider runs from 0% to 90%. Lower it when the old picture hides too much of the live scene; raise it when you cannot make out the reference. At 0%, the guide is invisible. Photo shows the reference picture, while Outline displays edges extracted from it. Outline can help when full colors and textures make the two views hard to separate, but it can also show background edges. It does not isolate a person or recognize a pose. Use the Ghost button to hide or show the guide without deleting the reference photo.

Use the guide to position the camera

Pick a recognizable detail that should stay in the same place, then move the phone until that detail overlaps its ghost. Check another fixed detail elsewhere in the frame before shooting. For a changing subject, use stable surroundings or a consistent anchor rather than trying to force every changing edge to match. Otherwise, you may move the camera to compensate for the very difference you wanted to record. The app also has Grid and Center guides, plus a Timer with 3-second and 10-second options. These support positioning; you still decide when the framing is close enough.

The ghost stays out of the saved photo

Pressing the shutter saves the new camera image without the old reference, its outline, or the positioning guides. You do not need to switch Ghost off just before taking the picture. That distinction matters if the preview looks like two images blended together: the blend is helping you aim, rather than becoming the finished photograph. With Last photo selected, a successful capture updates the reference to the newly saved image. With First photo selected, the starting reference stays in place while the latest-photo thumbnail updates.

What alignment can and cannot fix

The overlay gives you a visual reference, but Progress Photo: Before After does not automatically move, rotate, or warp your photos into alignment. It also does not confirm that two camera positions match exactly. If one part lines up while another remains offset, reassess the phone’s position and tilt instead of expecting the app to correct the saved picture afterward. Matching outlines does not make lighting identical or turn a photograph into a body measurement. The useful result is a more deliberate repeat shot, with any remaining differences left for you to assess.

If the ghost is missing or seems wrong

Check that the open project contains a photo, that Ghost is on, and that opacity is above zero. If the reference looks unfamiliar, check First photo versus Last photo and the project’s dated timeline. An imported image may become the earliest or latest reference according to its assigned date. Also, the large header on a project page can remain gray even when timeline photos are present; that display problem does not establish that your reference is missing. Open a timeline thumbnail to check the photo itself, then return to the camera to check the ghost controls.

Using a photo you already have

You can import an older picture into the project and use it as a reference when it is the first or last photo by date. There is no camera control for picking any arbitrary middle image as the ghost. If you want one particular picture as a starting reference, use a separate project with that image. Importing also does not give you an alignment editor: the app has no manual crop or rotation tool for repairing the reference. Start with a picture whose orientation and framing you can realistically reproduce with the camera you plan to use.