Originally posted by RiceHigh I can't see any problem for what you've mentioned and I think there is NO bug for what you describe.
Auto ISO will only kick in when there the Av and Tv have both reached their limits, physically for the Av and Tv (for out of range) and handheldable for Tv (at low speed).
What the case you mentioned, there is simply half stop Av room for the camera to adjust, so there is no need to change the ISO. If you need to raise the Tv together with ISO speed by keep the Av, I think the best way to do is to put your cam in Av mode and to select ISO manually.
I see problem. K10D manual says that in P mode (Hyper program) turning front wheel sets my camera into Shutter speed priority mode (i.e. into Tv mode). Therefore I expect it to work the same way as Tv mode works.
In Tv mode I was able to set shutter speed faster than 1/60. Aperture was set by camera to 1,4 and because it reached its limit, K10D increased ISO with each increase of shutter speed.
However in P mode I turned front wheel, according to manual camera went into Tv mode, but it did not allow me to set shutter speed faster than 1/60 and kept ISO at 100 (although ISO was set to Auto between 100 and 800).
Originally posted by peted Were you in P mode or Green mode and what program line are you using?
I was in P mode and Program line was Normal.