I own a Canon 20D. Since a few weeks I've got a problem with exposures. Making a picture I measure available light and make the picture on the M setting. Looking on the LCD screen the picture looks perfect. However, when transfered to Photoshop (or any other program) the picture is way underexposed. To make sure it's not the computer causing the problem, I printed some pictures without any adjustments. They came out underexposed as well. Consequently, something is wrong with the camera (or with me?). Camerasetting: whitebalance automatic and no WB shift; adobe RGB; parameter 2, LCD screen clarity neutral; firmware 2.0.2. The problem is most obvious on overcast days.
Finally: I've shot slides for over 10 years before I made the digital move, so know how to measure exposure/light.
Whay may I be doing wrong?