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[OM] Re: Selenium light meters (Was: OM 2N vs OM4T(i) - Relative reliabi

Subject: [OM] Re: Selenium light meters (Was: OM 2N vs OM4T(i) - Relative reliability/repairability)
From: Tim Hughes <timhughes@xxxxxxxx>
Date: Sun, 6 Apr 2008 18:32:13 -0700 (PDT)
Interesting that you think they have selenium cells still? 
I do not know of any vendors who still make them. 
You could substitute silicon if you had something the right size (or cut a 
larger cell with a
diamond blade saw) and then recalibrate, but the spectral sensitivity of 
Silicon is such that it
has high sensitivity in the infra-red, so they would need to put a sprectral 
correction filter
(infrared and light green) to get the correct spectral response.
Tim Hughes


--- Robert McFetridge <rmcfet@xxxxxxxxxx> wrote:

> 
> I have a couple of Weston IVs and both work although there is almost  
> a stop of difference between them now. Yes indeed they are repairable  
> but it may not be worth the cost. There is an outfit in California  
> that can do it that I know of and I will try and find their address a  
> bit later and post it unless someone else has it readily. As well  
> there is a company in the UK, < http://www.megatron.co.uk/ > that  
> sells the selenium cells and can also do repairs.
> Bob
> On 6-Apr-08, at 9:49 AM, John Hudson wrote:
> 
> >
> > I have a Weston Master V, model S461.5, meter. It is totally dead.
> >
> > Are these meters repairable?
> >
> > If so, does anyone know who could do the necessary service and  
> > repair work?
> >
> >  jh
> >
> >
> >
> > ----- Original Message -----
> > From: "Martyn Smoothy" <photo@xxxxxxxxxxxxxxx>
> > To: <olympus@xxxxxxxxxx>
> > Sent: Friday, April 04, 2008 6:29 PM
> > Subject: [OM] Re: Selenium light meters (Was: OM 2N vs OM4T(i) -  
> > Relative
> > reliability/repairability)
> >
> >
> >>
> >> Still have a Weston Euro Master which is over 20 years old & in  
> >> working
> >> order, regularly use it with my Mamiya RB67.
> >> It will come in useful when the meter in the OM-3 finally packs up.
> >>
> >> Martyn
> >>
> >>
> >>
> >> Leandro DUTRA wrote:
> >>> 2008/4/4, John Hermanson <omtech1@xxxxxxxxxxx>:
> >>>
> >>>>  I recently stumbled upon my and my wifes old Gossen Pilot selenium
> >>>>  meters, and it made me feel good that they both work AND are both
> >>>>  accurate. My sample goes back to the 60's.
> >>>>
> >>>
> >>> So is that a good buy?  That should be good for the environment.
> >>>
> >>> Or is there some must-have in newer, battery-powered meters?
> >>>
> >>> Sorry for the stupid questions, I am just trying to figure it out.
> >>
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> 
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