1. Plural of calotype; early photographs produced using the calotype process, a photographic technique invented by William Henry Fox Talbot in the 1840s that used paper coated with silver iodide.
Usage: historical; technical; photography

Examples

• The museum's collection includes rare calotypes from the 1840s.
• Calotypes were among the first successful photographic processes to produce multiple prints from a single negative.
• Early photographers preferred calotypes because they allowed for reproducible images on paper.
• The soft focus characteristic of calotypes gives them a distinctive artistic quality.
• Historians study calotypes to understand the development of photographic technology in the nineteenth century.