Sandy King (sanking@hubcap.clemson.edu)
Mon, 22 Feb 1999 20:55:41 -0400
Richard Knoppow wrote:
> A caveat. The Weston Analyser uses a Selenium cell. They can have the
>same problem with getting non-linear that the similar cells used in
>exposure meters have. When this happens the meter reads right for low and
>medium light levels but low for higher levels. So any device using a Se
>cell should be checked to make sure the cell hasn't become degraded. If you
>pay anything substantial for one you should have the right of return.
>----
Do Selenium cells degrade from use or does this occur over time
irrespective of amount of use?
Sandy King
This archive was generated by hypermail 2.0b3 on Sat Nov 06 1999 - 10:06:53