The image for this step shows the main window for Stereo Photo Maker.
SPM for Windows is popular and free.
It will automatically align the images.
The image shows the most useful SPM buttons indicated with yellow arrows.
SPM is very easy --
- First Open the Left and Right Images
- Next automatically Align them
- Crop both images (this happens simultaneously) to remove borders
- Automatically adjust the color and contrast so the images match more closely
- Save your image
- View your image