# The Omnibus Film Photography Thread

**URL:** <https://boards.straightdope.com/t/the-omnibus-film-photography-thread/1007354>\
**Category:** Miscellaneous and Personal Stuff I Must Share\
**Tags:** photo\
**Created:** [September 16, 2024, 5:00pm UTC](https://boards.straightdope.com/t/the-omnibus-film-photography-thread/1007354 "2024-09-16T17:00:20Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Johnny\_L.A](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/johnny_l.a/32/1084_2.png) [@Johnny\_L.A](https://boards.straightdope.com/u/Johnny_L.A)\
**Post date:** [September 17, 2024, 3:13pm UTC](https://boards.straightdope.com/t/the-omnibus-film-photography-thread/1007354/2 "2024-09-17T15:13:26Z")

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I have a question.

Many cameras and light meters were designed to use 1.3 v mercury batteries, which were banned almost 30 years ago. Air-activated Wein cells make the correct voltage, but they don’t last very long. There are adapters that contain circuitry to convert 1.5 v to 1.3 v, but reviews on one offered on Amazon said it didn’t work.

If a company like Wein can develop a 1.3 v air-activated cell, why can’t they (or another company) simply make a 1.3 v alkaline cell?

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