[rollei_list] Re: Rolleiflash and Guide Number
- From: Mark Rabiner <mark@xxxxxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Sun, 29 Nov 2009 09:11:37 -0500
> It's interesting to note that some electronic Rolleiflash GN are given
> for metres and DIN 18º ASA/ISO 50, for example the powerful E 36
> models have a GN 36 but for ISO 50 film, newer GN for newer flashes
> are given for ISO 100 film and then you have that the E 36 models have
> a GN 72 for ISO 100 film and normal 50mm lens, (about 236 for feet).
> There are a few regular flashes units today that have a similar GN,
> f.e. the professional Mecablitz 76 MZ-5 Digital has a GN 76 (about 249
> feet) but for a 105mm lens (it means the flash light is more
> concentrated and can go farther), the GN for a normal 50mm lens is 54
> for this Mecablitz and then you have that the Rollei E 36 models were
> one of the most powerful regular flashes units ever made. BTW, they
> don't have zoom and they can't vary the angle of the light and they
> can't swivel and they don't have a second lamp for the eyes. The
> Rollei E 36 RE was a successeful flash and was manufactured from 1973
> to 1981 in Rollei-Werke, Braunschweig.
>
> Carlos
I my memory the GN's were rated for 25 film then it went to the 100 film one
year in the early 70's
Mark William Rabiner
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