Re: functional difference pz-1p/pz-1?

[David Dixon]

I'm a different David, but I'll stick my oar in. I've tried your expt below, with a Z-1, and a SMC-M 200/4.
I can definitely get spot metering - a four-fold difference in exposure changing between centre-weighted and spot.
However, if I change Pentax function 1, so that activating the "spot" option instead uses centre-weighted metering, I get the same reading with/without spot option - as expected as both modes are using centre-weighted. Hve you checked your PZ-1 to see what setting PF1 is using?
My results agree with my interpretation of the manual:
K, M lenses A, F, AF lenses
Normal metering Centre-weighted Matrix
Spot metering (PF1=SP) Spot Spot
Spot metering (PF1=CE) Centre-weighted Centre-weighted

So, all our (P)Z-1s work the same, but are probably set up differently?

David Dixon

[EMAIL PROTECTED] wrote:

David,
To clarify, you tried the experiment below. You mounted a K or M lens and checked metering without and with Spot? You got significantly different reading using Spot? Can you tell us what lens you used?
My PZ-1 has never worked this way since purchased new. I was an early purchaser, but many others have noted this discrepancy before. Mark Roberts and others have web pages devoted to modifying M & K lenses to allow spot and matrix metering.
Regards, Bob S.

Try it in a dim room with a table lamp and a wide angle K or M lens. The "SPOT" metering area is about the same size as the [ focus ] area of

the

PZ-1. Put the lamp in the focus area and meter - center weighted. Turn

on

spot metering and do the same. You will find identical readings. Now
try it with an A, F, or FA lens. You will get different readings.