[rollei_list] Re: Selenium Light Meters
- From: Mark Rabiner <mark@xxxxxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Thu, 09 Oct 2008 02:06:55 -0400
I'm real fond of my Gossen Pilot 2 Selenium Meter which I've been told and
have not reason not to believe has the same insides as the one in my
Rolleiflex 2.8 f type 2 and the meter knob on my Hasselblad.
Trouble is they're not so reliable in lower light; as in
Indoors.
I'd love to get one of those original Weston's people and Ansel talk about.
I got a thing where I can mount my meter on a shoe. And have a shoe adaptor
thing for my Hassy lens shades.
But I really just like it hand held.
Around my neck it sits in the top pocket of a shirt I'd wear with a pocket.
Probalby wear for the occasion.
mark@xxxxxxxxxxxxxxxx
Mark William Rabiner
> From: Marc James Small <marcsmall@xxxxxxxxxxx>
> Reply-To: <rollei_list@xxxxxxxxxxxxx>
> Date: Tue, 07 Oct 2008 20:26:02 -0400
> To: <rollei_list@xxxxxxxxxxxxx>
> Subject: [rollei_list] Selenium Light Meters
>
> At 07:07 PM 10/7/2008, Carlos Manuel Freaza wrote:
>
>> I agree with you a bout the selenium cells for lightmeters, they are
>> very good, however it seems they are no longer used for new
>> professional lightmeters.-
>
>
> Carlos
>
> If you've not realized this, I am a huge fan of
> selenium meters. In the end, selenium more
> closely matches the response patterns of chemical
> films than do later substrates such as CDS or SPD
> or Gallium Arsenide. The problem is that the
> later substrates are photo-reactive -- they
> display RESISTANCE in line with the amount of
> light they receive -- while selenium is
> photo-voltaic -- it produces a current in line
> with the amount of light it receives. Thus, the
> later substrates require a battery to run a
> current through the substrate and the resistance
> is measured to produce a reading. With selenium,
> the current produced engenders the reading.
>
> Selenium cells produce a VERY low amount of
> electricity. Thus, they require a very broad
> acceptance angle (they read a LARGE area) and
> require a complex mechanical linkage to magnify
> the low current reading to a form capable of being placed unto a dial.
>
> Another problem is training and age. Us
> old-timers -- I am pushing 59 -- who came up with
> selenium meters know how to use them. The rest
> of you youngsters do not. An accurate reading
> with selenium requires that the photographer save
> the meter or camera about a bit to obtain an
> average reading. And selenium meters, due to the
> very low current they produce, are not capable of
> working in low-light conditions.
>
> I love the meter in my Leitz M6 Wetzlar and that
> in my Rollei 2.8GX and the Kiev-88 Meter Prism I
> use on my Hasselblad 2000 FC/M. But my standard
> meter remains my father's 1939 Weston 715,
> overhauled every decade or so by George Milton at
> Quality Light-Metric. Heck, I even have a
> Prewar Metrawatt Leica-Meter 60 which is a really
> neat device to use on my IIIc.
>
> I had been aware of the purchase of Metrawatt by
> Gossen and thanks, Carlos, for reminding me of this.
>
> Marc
>
>
> msmall@xxxxxxxxxxxx
> Cha robh bàs fir gun ghràs fir!
>
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