Change Image Thumbnail Sizes
Easily set how large picture thumbnail previews should be, anywhere from 32x32 to 172x129 pixels.
Also choose whether to use high-quality thumbnails, set the cache size, and whether to read stamps if they exist in a digital photo.
* Stamps are thumbnails that are stored inside of pictures. Some digital cameras save "stamp" thumbnails when they take pictures.
Not all digital cameras support this feature. Using stamps instead of thumbnails can speed up browsing pictures, especially for very large picture galleries.