Our belief is that the American photographers are going ahead of the English and French, as much in the collodion processes as they have in the daguerreotype. Messrs. Anthony's Instantaneous Views are sharp everywhere and free from distortion. Mr. Wilson, after seeing them, says Anthony's pictures are much quicker than mine, and I must get some sort of shutter to open and shut quickly.

Letter quoted in Anthony: An American Photographic Pioneer by William and Estelle Marder