Infallible Exposure Meter
Wynne’s Infallible Exposure Meter, first made in the 1890s. It's the size of a small antique pocket watch.
By timing how long it takes for a paper disk in the meter to change colour when exposed to the light, you can estimate the exposure time you need for your camera, based on your chosen f stop. How technology has changed since then!
Here's more information on the meter and how it works, if you’re interested.
www.earlyphotography.co.uk/site/entry_E49.html
Photographed with a Nikon Micro-NIKKOR 55mm f2.8 and Nikon PK-13 extension tube.
Infallible Exposure Meter
Wynne’s Infallible Exposure Meter, first made in the 1890s. It's the size of a small antique pocket watch.
By timing how long it takes for a paper disk in the meter to change colour when exposed to the light, you can estimate the exposure time you need for your camera, based on your chosen f stop. How technology has changed since then!
Here's more information on the meter and how it works, if you’re interested.
www.earlyphotography.co.uk/site/entry_E49.html
Photographed with a Nikon Micro-NIKKOR 55mm f2.8 and Nikon PK-13 extension tube.