I just got this camera as my first SLR and I'm confused by the way it behaves in aperture priority mode. I'll set my aperture and I'll see the camera set the shutter speed displayed in the LCD. But then after taking some photos I'll look at the LCD and it no longer shows me what my shutter speed is, and instead I see that the EV value has been changed. Even if I adjust my aperture again, the shutter speed no longer displays. But if I switch off of the aperture priority setting and then go back to it, then I get my shutter speed display again.
Is this something I've set somewhere in the menus that is causing this?