Re: [Leica] Pentax spot meter memory

["Jeff S" <segawa@netone.com>]

George, the Pentax Digital Spotmeter always gives out the same EV reading,
regardless of film speed. From observation, I'd say that they are correct
for ISO 100, and that exposure info for all other film speeds is simply
calculated from this reading; that it works beautifully at other film speed
settings tells me that this is not an accident :-)

As you turn the film speed dial, you'll note that you're also changing the
position of the shutter speed ring, relative to the EV ring--good old
fashioned mechanical calculator.

To keep this marginally Leica-related, I'll note that this reference meter
of mine, which agreed almost perfectly with my F4 meter, is around 1/3-1/2
stop off from my new M6-curious if anyone else has noticed this, and whether
this could represent some sort of intentional fudge factor (where do these
terms arise??) in the M6 meter or it's just plain off a bit.

Jeff

- -----Original Message-----
From: George Huczek <ghuczek@sk.sympatico.ca>
>At 05:31 PM 15/08/98 -0600, you wrote:
>>George, the dials on the Pentax Digital Spot are for exposure calculation,
>>and are not keyed into the electronics in any way.
>>
>Wait Jeff.  The back dials are just to set EV values and get shutter speed
>+ aperture combos.  Works like the old Kodak circular dials they have in
>their manuals.  Turn the dial to the right setting ... read the numbers.
>
>The front ring though, has to be keyed in to the electronics.  How else is
>the meter going to know how to give out an EV value unless you tell it the
>film speed in use?  When you turn the front ring, it clicks in one-third
>stops.  The back dials just turn freely.
>
>
>-GH
>