Fizeau Test

"Scarcely a month has passed since my process was made known and already, on all sides, people claim to have extended its boundaries by finding the means of multiplying its results by engraving and other means not yet determined” — Daguerre 

At the dawn of the invention of photography, it was great scientists who were working to explore and exploit the somewhat earth-shattering announcement of the daguerreotype.  At stake was the ability to convert what was, at that point, a fascinating but impractical phenomenon into a powerful and profitable one. The greatest scientific minds in France and Britain had made it a mission. Alfred Donné of Paris and Josef Berres of Vienna were the first to meet limited success showing prints from etched Daguerreotypes in 1839 and 1840 respectively.  Their results from simple etching however were not of acceptable quality.

Hippolyte Louis Fizeau Young man with top hat, 1840 or 1841 Heliogravure from a daguerreotype taken in the studio of Nicolas-Marie Paymal Lerebours (1807-1873)

By far the most successful process for transforming daguerreotypes into intaglio plates was that developed by Hippolyte-Louis Fizeau. Early examples were lacking in half-tone and detail, a fault that he overcame in his later prints by graining the plate with rosin before a final etching. He described his prints as being made “without engraving or retouching by an artist” and as successful as Fizeau’s prints were, they were not altogether satisfying.  Despite their precision, they remained far from the magical surface and seemingly infinite detail of the daguerreotype plate and they seemed arbitrary and inelegant when compared the work of classical engravers. With the rise of Talbot’s calotype and its reproducibility, Fizeau’s process ultimately proved a dead end.  Though clearly capable of fine results, it was too complex to be readily practicable, and few prints beyond the inventor’s demonstration pieces survive.

This portrait is one of the very few remaining Fizeau examples of experiments to have survived. We are grateful to have it in the collection.

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