An albumin paper photograph by Eugen Albert testing a red-sensitive orthochromatic emulsion, capturing tonal range, light response, and image detail for photographic experiments between 1882 and 1888.

Royalty-Free Standard Commercial licenses are granted for worldwide, non-exclusive and perpetual use, unless specifically noted otherwise. All Royalty-Free transactions are final. The Royalty-Free Standard Commercial license has no limitations and covers up to 15 users.