The British Journal of Photography
later gave the result of a "Report of the Special Judges appointed
by the Exhibition Committee to Award at their Discretion three
Silver and three Bronze Medals for Improved Apparatus, Materials,
In fact, the Special Judges awarded
just two Silver Medals and three Bronze Medals. The Silver
1. A Silver Medal to Professor Charles
Piazzi Smyth, for the Plano-concave corrector (No. 1031).
This was a new optical arrangement which, being placed in close
proximity to the prepared plate, completely prevents the effect of
the spherical aberration of the portrait or other lens, and allows
full aperture to be used.
the example exhibited this is adapted to a brass camera which has
several extremely ingenious arrangements for obtaining copies of
objects in rapid motion.
2. A Silver Medal to Mr H Fox Talbot,
for three specimens of photoglyptic engraving (No. 1035) -
a process first published by Talbot in 1853.
[BJP: 26 January