中文说明：在早期，变形主要是使用廉价且不太真实的摄影效果（如交叉溶解或褪色，其中一个图像淡出，而另一个图像同时淡入）。
English Description：
In early days morphing was dominated by the usage of cheap and not very realistic photographic effects (like cross-dissolve or fading, in which one image is faded out while another is simultaneously faded in). Doing this as good as possible leads to the so-called stop-motion animation, in which the subject is progressively transformed and photographed one frame at a time. - But there are major disadvantages in connection with this process: doing stop-motion causes a lot of tedious work and visual strobing by not providing the motion blur normally associated with moving film subjects. Trying to fix the above mentioned disadvantages led to the so-called go-motion. Here the frame-by-frame subjects are photographed while moving. Now you get a more realistic effect by having proper motion blur, but the complexity becomes even greater due to the motion hardware and additionally required skills.