This is an easy way to create a Stereo image with a phone or standard camera and lens. Effective 3D photography can be done, with some limitations. The basic idea is to get two images which are separated by the same distance as the spacing between a normal person's eyes (about 65mm / 2.5")

The Cha Cha method involves standing with your feet slightly apart, but well balanced, and your elbows tight to your sides, with the camera held in the middle. For a parallel Stereo image you move your weight to your left foot, so the camera is on the left, then take the first photo. You then transfer the weight to your right foot, which will also move the camera to the right, allowing you to take the second photo. For a Cross eyed viewable image you do the same thing but starting on the right foot for the first image. Often people take three images so they can choose the base distance and this is called the Cha-Cha-Cha method.

Remember to check for anything in the foreground that may be too close for the distance you’re moving.

The primary drawback of this method is that nothing in the subject area should be moving between when the first and second photographs are made. Anything which has changed position in the photographs will cause what is called "retinal rivalry" - the brain has trouble fusing the two images. The things in the two photographs which have moved will appear to "flicker". You'd be amazed at how often something is moving in what appears to be a static scene - leaves moving in the wind, cars in the distance, and so on!

Also check when people, vehicles, clouds, moving trees, animals, etc. are in shot for movement as this can be very distracting when trying to fuse two images showing different movements into one 3-D image, unless this is the look you’re going for.

Also try and keep the camera as level as possible between shots; if you find this difficult you can buy a sliding bar.

Whilst not exactly the Cha Cha method, you can also take a stereo pair by shooting from a moving vehicle while aiming the camera perpendicular to the direction of travel. How long to pause between shots depends on your speed so try a number of intervals, none of them longer than a few seconds and a few as short as possible. If your camera has a continuous mode, use it to capture a series of images. Later you can see which pair give the best 3D image. Since the vehicle is moving, you need bright light and a fast shutter speed to avoid blur in your images. You should also avoid foreground objects that speed by. Finally, if you are photographing out the right side of the vehicle, you will be taking the photos out of their normal order—the right picture first then the left instead of the other way around.