Re: Re[4]: electra studio flash/ring flash

[Dan Scott]

On Wednesday, December 4, 2002, at 06:56  AM, Rob Studdert wrote:

On 3 Dec 2002 at 21:27, Dan Scott wrote:

Hey, just on a lark I looked at B&H, they do sell CF studio lights for
high $$$. The price difference would certainly make me look at rolling
my own.

The main problem with using mains frequency fluorescent lamps is that since the phosphorescent materials have a relatively short persistence so the light output isn't relatively continuous like tungsten lamps, it flickers. This can send some camera meters crazy, my LX and E-10 are both affected,
we are 50Hz here so the lamps flash 100 times per second. A lot of the commercial fluorescent light (cold lights) have special high frequency power sources, hence the often high costs.

Cheers,

Rob Studdert
HURSTVILLE AUSTRALIA
Tel +61-2-9554-4110
UTC(GMT) +10 Hours
[EMAIL PROTECTED]
http://members.ozemail.com.au/~distudio/publications.html

Hi Rob,

Electronic Ballasts are pretty cheap nowadays (here, anyway). I suspect the markup on the CF units on the ones purposed for photography is quite substantial.

Dan Scott