Originally posted by K-rrr This has always puzzled me, how does that differ to aperture or shutter priority mode?
Not much, really, but you are locking down an exposure and then shifting. If you don't use the P Shift at all then there's a greater chance you might get a different exposure than the one you were interested in.
Sometimes I might meter off the sky, lock the exposure and then realize my aperture wasn't how I wanted it. I could change to desired aperture, meter again and then lock the reading - or I could just dial/shift the aperture. It's simpler.
Originally posted by derekkite It's only available in P and Sv modes. Yes it is similar to Tv and Av mode.
"P Shift" doesn't show up on the screen, but the behavior seems to be very much the same when I'm in Manual.