The camera movement and how the images are taken is very important. Proper camera movement can significantly enhance the quality of your model. Here are some guidelines to improve your image-capturing techniques:
Maintain focus and capture sharp, steady images. Avoid hasty movements, as those can result in blurry and unusable photos.
Be systematic. Don't just randomly take images around the object. Take loops around it at different elevations or follow a grid.
Each point you want to recreate should be visible in at least two images.
Do not change the camera viewpoint by more than 30 degrees between neighboring camera poses. Sudden angle changes can make common features in different images indistinguishable and create misalignments.
Follow the shape of the object. This is especially important for complex shapes to ensure every detail is captured. Any part that isn’t clearly visible in at least two images will not be reconstructed.
Maintain high overlap between images. They should overlap by approximately 70% in all directions to ensure better image connection and higher model detail.
Move around the object. Avoid taking shots from the same spot while only changing the camera angle. An organized variety of camera positions and angles will give you better results.
In the Principles of Scanning for Photogrammetry course, you can find useful information on scanning everything from simple objects to employing advanced techniques.