David, Thanks for describing the steps you took. My PZ-1 does not work the same. I put a #2 K extension tube on it with a FA28-70. I got the same exposure reading when I used the SPOT button or not. The only way I could get different exposure readings was to change the PF for spot or center weighted. Regards, Bob S.
[EMAIL PROTECTED] writes: > [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. > > I used extension tube #2 from Auto extension set K mounted between the > PZ1-P body and the FA 28-70 zoom. The extension tube is a K version > tube with no electrical contacts. This isolates the electrical contacts > of the lens from the body and makes any version K mount lens attached to > it behave like a K lens. > > I tried the test again, spot metering definitely works. The bare light > covers area just larger than the autofocus rectangle. > > I have the body set to shutter priority. For spot setting the exposure > time is 1/350 when centered on the bulb & goes to 1/30 when the outer > edge of the autofocus just touches the outer edge of the light. At the > matrix setting (which defaults to center weighted metering lenses > without electrical contacts like this combination) the exposure times > are 1/90 when centered on the bulb & goes to 1/30 when the outer edge of > the autofocus just touches the outer edge of the light. > > > -- > David S.
