I just got a Pentax Spot Meter V. This is the first Pentax meter I have owned. Just checking it out to make sure it is working fine. I am trying to figure out if iso speed should affect ev reading on the manual dial. Say I get a reading of EV7 with ISO 100 film, then take the same reading with the meter set to ISO 400 speed should the meter still be reading EV7? This isn't how it works on my Minolta Autometer IV.