Sosakonline Archive

Please note that all content in this section has been imported from our old Sosakonline website and may contain broken links. We are revising it as we can, but these things take time, and it's a lot of content to get through!

Today, I thought I would try to see what the "usable" glowing times were for a set of Stayglow scales.   Although, the human eye is more sensitive to light, than a camera lens; I tried to capture maybe some "runtimes" for a set of scales.  (Those that frequent Candlepowerforums know all about runtimes and beamshots).

Since it was around 103 degrees today here in the Land of Oz without a cloud in the sky, I figured that I could really charge up the scale and watch hands.  I set one scale directly in the sun along with a Casio watch that I had stored away.  Since I wear this Casio watch on occasion, I could roughly estimate glowing times for the Stayglow scale by comparing it to the brightness of the watch hands.

After leaving them outdoors for around an hour or so, I then brought them inside to my improvised darkroom, and tried to take a picture of them every 30 minutes until I felt the camera would not register an image anymore.  (My camera was set for f 2.8/4 sec and an ISO of 400.)

Here is the original test target/subjects:


And images roughly every 30 minutes:





One hour





Two Hours





Three Hours





And really being bored today, I made an animated GIF showing a few of the shots above in sequence: