How to do this? (triplets) | Photoshop Manipulations | Photo Forum

To recreate a picture you have posted, you don’t need to cut anything out.

You need a tripod and remote shutter release, you can also use build in timer or just ask some one to press shutter for you.

1. Set your camera on the tripod, compose and focus manually (it is best to use wider zooms for this and smaller apertures to have larger depth of field). To help you focus ask someone to stand in front of the camera or use a camera bag or anything you can put on the spot where you will be standing. Take a plate shot (just a photo of the environment) make sure it is exposed properly and everything look good.

2. Put your subject in front of the camera (or if you are the subject stand in front of the camera) and take a shot. Then move and take another shot (repeat as much as you want). When just learning I would try two or three shots for start.

3. Open up photoshop and load all the images as layers. Put a layer mask on each layer and paint with black to erase where you want a subject to reveal if you mess up use white to bring it back. Because the camera was on the tripod the background didn’t move so there is no need for an accurate selection.

This type of photography is used a lot to stop a very fast moving subject and still show that it is moving (snowboarding, skiing, and other)

I tried this on my daughter going down the slide on the play ground. 

If your camera has a continues fast shutter release future you can do it hand held then just use aline layers future in photoshop to correct slight movement.

Hope it helps.

Aleksandr