More efficient and effective:
- Quickly look through your photos, much faster.
- You can better tell which compositions are stronger or weaker, when you see them as small thumbnails.
- Perhaps a good way to know whether a photo is strong or not — does it pop out as a small thumbnail? If so, it is a strong photo.
- When seeing photos as small thumbnails (contact sheet), you can quickly flag/pick/favorite photos you like.
- You can better judge the compositions of your photos by quickly seeing the photo compositions edge to edge. You can get a better sense of the overall gist of the composition; whether triangle, leading lines, the position of your subject, the amount of sky in the frame, curves, arabesque, circle, etc.