Originally posted by mtngal
Has anyone else noticed any metering differences since they upgraded to 1.30? Or do you suppose that there is something else going on with the meters?
I have not yet tried a series of tests, but I had several discussions with pentax technical support, and forwarded them some photos I used to check calibration.
As part of the discussion, I made a casual observation. My *istD took longer to set the exposure when the green button was pushed, or more specifically the lens seemed to be stopped down longer (almost 2 times as long).
The pentax rep suggested I might get better results with the green button if I used the Depth Of Field preview first. I tried this and the results were more consistent.
When I got V1.30, I put my *istD and K10D side by side and pushed the green button on both. Guess what. They now both take the same time.
As I said, I still need to run some control exposures to check.
For anyone who wants to try, take a series of shots, using a simple background like a block wall or paved road surface, and shoot from min to max apature using the green button. plot the greyscale exposure value from the histogram on the center section of the print (thisis easy in PSP XI) against apature (apature on a log scale)
I still find it gets big apatures (my 1.4 50mm) a little wrong.