Wynne Wynne's Infallible Exposure Meter Light meter
07
days
19
hours
45
minutes
03
seconds
 | €16 |
|---|
Catawiki Buyer Protection
Your payment’s safe with us until you receive your object.View details
Trustpilot 4.4 | 142645 reviews
Rated Excellent on Trustpilot.
Brand Wynne, Model Wynne's Infallible Exposure Meter, physical condition Good, functional condition Untested, dating 1900–1910; a pocket-watch‑style exposure meter used by photographers to calculate exposure with Actino Time material.
AI-assisted summary
Description from the seller
On the dial the words “Wynne’s Infallible Exposure Meter” are clearly visible. It was a light meter used by photographers to calculate the exposure time according to the sensitivity of the plates/films and the lighting conditions.
The inscription “Actino Time” is significant: these devices used a photosensitive material that changed shade with the light; by comparing the change to a reference scale the exposure could be determined. The outer scales indeed show the f-stops F/4, F/5.6, F/8, F/11, F/16, etc., and the corresponding shutter speeds.
I would date it to English usage from the late Victorian era to the first decades of the 20th century. The pocket-watch shape was intentional: it was convenient to carry during shoots.
It is an object that could be of considerable interest to collectors of antique photography and scientific instruments.
On the dial the words “Wynne’s Infallible Exposure Meter” are clearly visible. It was a light meter used by photographers to calculate the exposure time according to the sensitivity of the plates/films and the lighting conditions.
The inscription “Actino Time” is significant: these devices used a photosensitive material that changed shade with the light; by comparing the change to a reference scale the exposure could be determined. The outer scales indeed show the f-stops F/4, F/5.6, F/8, F/11, F/16, etc., and the corresponding shutter speeds.
I would date it to English usage from the late Victorian era to the first decades of the 20th century. The pocket-watch shape was intentional: it was convenient to carry during shoots.
It is an object that could be of considerable interest to collectors of antique photography and scientific instruments.
Details
Era
1900-2000
Brand
Wynne
Model/type nr
Wynne's Infallible Exposure Meter
Physical condition
Good
Functional condition
Not tested
Estimated period
1900-1910
Sold by
