Using the Tweener

The first step to expermenting with tweening and movies is to use the "tweener tool". It turns out that while this tool was originally designed to create movies, it's ability to generate images "half way between" two other images is extremely powerful. So you might make a bunch of changes to an image, and decide that it is somewhat better, an earlier snapshot looked better in other ways - you could use the tweener to find something that blends between these two images to find the perfect image.

1. Make sure the details panel on the right is shown (click the button on the bottom right or type 'd' if it isn't shown).

2. Click the tweener tab (with the "circle to square" icon).

3. Drag your starting image into the top left image well (this can come from your document, a snapshot, another document, etc...).

4. Drag your second image into the top right image well (again, it can come from your document, a snapshot, another document, etc...).

5. Drag the slider below these two images and see the resulting image below it change, morphing from one to the other (if neither image corresponds to your document's image, the results will not likely ever look exactaly like any of the starting or document images).

6. When you find a good balance, drag the resulting image out and drop as desired (back on the document view, in the snapshot list, or any of the drop tabs at the top of the screen).

7. As with other image cells, if you control-option click on it, a larger view of the result will appear.

8. If you like the way this thing morphs from one to another, you can export that as a movie by clicking the Make Movie button. This will generate a movie using the settings in the movie tab.