Other important things to consider while citing:
The College Art Association's Art Bulletin style is a modification of the Chicago Manual of Style. It gives the most thorough information, and is widely seen as the preferred style to use. Scroll down to their Captions sections:
Captions should be numbered consecutively. Figure numbers do not include a period. A full caption includes, whenever available and appropriate, information in the following order:
Figure number with no period
Artist (first name, last name)
Title (in italics)
Date
Medium on support
Dimensions in inches (h. x w. x d.) followed by dimensions in centimeters (1 inch = 2.54 cm)
Name of collection
City of collection
Other collection information such as "gift of . . . ," accession number, etc.
Copyright or credit line information regarding both the photograph and the artwork (in parentheses)
Artwork:
1 Sandro Botticelli, Primavera, ca. 1482, tempera on panel, 6 ft. 8 in. x 10 ft. 4 in. (2.03 x 3.15 m). Galleria degli Uffizi, Florence (artwork in the public domain; photograph provided by Scala/Art Resource, NY)
Photograph:
2 Steichen, Edward. Enlisted Men of the USS Lexington. 1943. Art, Architecture & Engineering Library Collection. University of Michigan. March 21, 2009.
Special Presentation:
3 William Kentridge. Multimedia Interactive Feature. San Francisco: San Francisco Museum of Modern Art, 2009. Explore Modern Art. March 2009. San Francisco Museum of Modern Art. March 21, 2009.
More information about citing can be found on the Libraries' Citing Your Sources guide. Tabs for both Chicago and MLA styles have examples of image citations.