Thread and needle release
From Camerapedia.org
A thread and needle release is a feature found on some leaf shutters on the 1920s and 1930s, providing delayed action without implementing a proper self-timer. It consists of a hole in the shutter's front face, where you can introduce a needle, held by a long thread, before tripping the main release. The picture is taken when you pull the thread, so you can take pictures of yourself.
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Links
- Operation of a thread and needle release, explained with pictured on Nekosan's website
Glossary Terms
