Acceptable images for this purpose are landscapes that have strong variations across the full value scale and demonstrate atmospheric perspective, where images in the distance appear paler, blurrier, and smaller compared to those closer up.

1. Example Images

2. All acceptable images:
• Are landscapes
• Have strong variation in value, showing all
values on the value scale
• Show atmospheric perspective (images in the
distance have a paler value, are blurry, and are
smaller)