Alva flash unit No. 1
Alva flash unit No. 1 mounted on Minimum-Palmos image by Michael Roth (Image rights) |
image by Michael Roth (Image rights) |
The Alva flash unit No. 1 was a triple reflector flashgun for use with three big flash bulbs. It needed flat 4.5V batteries. With the camera shown in the images flash sync shutter speed is 1/20 sec.