[rollei_list] Re: Weston Master III Checked Against Minolta IIIF
- From: Jerry Lehrer <jerryleh@xxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Mon, 02 May 2005 16:51:00 -0700
Richard
ALL of my Weston meters passed that test.
The ND filter is a red herring. An RK theory.
Jerry
Richard Knoppow wrote:
> ----- Original Message -----
> From: "Douglas Shea" <dshea@xxxxxxxxxxxxx>
> To: <rollei_list@xxxxxxxxxxxxx>
> Sent: Monday, May 02, 2005 9:15 AM
> Subject: [rollei_list] Re: Weston Master III Checked Against
> Minolta IIIF
>
> >
> > My Weston Master III came back from QLM three days ago and
> > with the
> > Inver-Cone attached it matches my Minolta IIIF perfectly.
> > The Weston is a
> > beautiful meter, but the Minolta is infinitely easier to
> > use with both
> > analog and digital display large enough to go easy on my
> > old tired eyes.
> >
> > Doug
> >
> I am not surpized. The Weston Master III was calibrated
> in ASA-ISO speeds and QLM may also have installed a neutral
> density filter to get it on the nose. My concern is with old
> Weston meters calibrated in Weston speeds.
> BTW, because the Weston Master has two overlaping ranges
> its easy to test the cell for condition. Find a source that
> will read near the top of one range and near the bottom of
> the other. On my Master II a reading of around 25 to 50 is
> right. The reading should be the same on both ranges within
> a very small amount. When the cell has become damaged the
> reading near the high end of the scale (low range) will be
> low by about a stop. This error can not be corrected by
> changing the film speed because it is not constant but
> increases with the output of the cell.
>
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@xxxxxxxxxxxxx
>
> ---
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