Waterhouse stop
id:
waterhouse-stop-288-13527081
title:
Waterhouse stop
text:
The Waterhouse stop or Waterhouse diaphragm is an interchangeable diaphragm with an aperture (hole) for controlling the entry of light into a camera. A thin piece of metal is drilled with a hole; a set of these with varying hole sizes makes up a set of Waterhouse stops, corresponding to what today we call f-stops or f-numbers. Photographic lens makers provided slots in lens barrels for the insertion of the chosen stop. This apparatus was invented by the pioneering 19th-century photographer John
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Waterhouse_stop
date created:
date modified:
2021-01-14T20:18:53Z
main entity:
{"identifier":"Q7974143","url":"https://www.wikidata.org/entity/Q7974143"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/1/17/Dallmeyer_waterhouse.jpg","width":427,"height":222}
fields total:
13
integrity:
14