Poorly maybe the wrong word. Selenium, or iron selenide cells are photovoltaic, while cadmium sulphide (CDS) cells are photoresistive. Hence the selenium cell will have very little output in low light. My Westons will read accurately down to f:1 @ 1/60 with ASA 100 film. This is pretty dim. The LunaPro will do hours though.
Originally Posted by Mainecoonmaniac