Thanks for the compliments Larry. I use 3 lens: DA 21/3.2, FA 35/2 and FA77/1.8. I routinely use ISO 400 to avoid blown highlights. Note that I shoot in RAW, which allows to keep much wider dynamic range than shooting JPEG (when all settings must be spot-on), and that both with K100D and K-x noise is not a problem at that ISO. For example, this image http://koka.zenfolio.com/p264067404/h1cce4bf5#h1cce4bf5
is taken at ISO 3200. When shooting at ISO 400 (often with ev -0.5) and using center-weighted metering (as I do) one only needs to be careful (readjust) when shooting into a bright spot relative to the rest of the image.