I bought a no-name analog spot meter a few months ago and did a test with it to calibrate it with the film-developer-paper-paper developer combo I am using and it all seemed to match up fine - all ten zones. I then found a digital pentax with zone vi mods for $150 and couln't pass it up. They agree on the highlights almost always but from ev9 and down, they can be as much as 2 ev different. The Pentax showing lower values. I tried to determine if color was the issue and maybe the Pentax views greens differently. I am thinking that the clone goes in the kit for color and the pentax will be my main-stay.

How different is a zone vi mod unit from the regular ones?

Has anyone had trouble with a Pentax spot meter?