Hi Jeffri, Adam and redfox88
Thanks for the answer, my question was not a complaint of the G15 IQ, but I always heard it"s best as you use f4 or f5.6 if you want everithing sharp foreground and background for landscape pictures (no shallow dof), so when all my other digicams G9 G10, S110, S200, G1X,.. use f4 or f5.6 in Pmode, and the G15 use f2.8 I thought ther was something wrong with my G15. So, glad to hear it's normal behavior for the G15
So, i believe you Adam and redfox as you said, the lens is at is sharpts at f2.8, so I'm gone let him that way and enjoy shooting with it.
The good thing about this forums is that you can learn much from more capable users of me.