Anamorphic Photographs

What is an anamorphic image?

An Anamorphic Image is an image that appears normal only when viewed from some particular perspective or when viewed through some transforming optical device such as a mirror.

Photograph A is an anamorph of photograph B.

Anamorph of boy
A: Anamorph version of boy's image
boy portrait
B: Unaltered version of boy's photo
Anamorph of boy
With a cylindrical mirror of the proper dimensions you see this

Artists in the renaissance were often fascinated with such perspective distortions and incorporated them into their paintings. Undoubtedly the most famous plane anamorphic painting is The Ambassadors (1533) by Hans Holbein. The gray smudge in the lower centre of the painting is seen as a skull when viewed from the right at a shallow angle above the surface.

Mirror Anamorphs

When an image is viewed in a mirror which is not flat, the image appears distorted and is a mirror anamorph. A familiar example is the common right-hand rear-view-mirror on many automobiles that provide an expanded but distorted view. Another familiar example is the Fun House Mirror in which the distortions are carried to comic extremes.

Beginning in the renaissance, artists experimented with the anamorphic images produced by simple mirrors. Of the many possibilities, the conical mirror and the cylindrical mirror were the most common. Because conical mirrors are difficult to make and cylindrical ones are easy the cylindrical anamorph is the most common. These anamorphs were valued decorations among the wealthy, particularly in the 17th and 18th centuries. Many famous paintings were copied as anamorphs for the aristocracy. In the 19th century, with the transfer of interest to photography, the cylindrical anamorph became a children's toy.

The Ambassadors by Hans Holbein, 1533
The Ambassadors by Hans Holbein (1533)
skull detail from the Ambassadors' painting
Skull detail from The Ambassadors by H. Holbein 
This is a cylindrical anamorphic painting by an unknown artist of Nicholas Lancret's "Par un Tendre Chansonnette"
   This is a cylindrical anamorphic painting by an unknown artist of Nicholas   
Lancret's "Par un Tendre Chansonnette" (With a tender little song). 
Reconstructed image of anamorphic painting by an unknown artist of Nicholas Lancret's "Par un Tendre Chansonnette"
The image is reconstructed in the cylindrical mirror.
The image plane in the mirror has a peculiar shape.