Would you say I have an issue with my D50? I was shooting some test shots in the studio the other night, playing with aperture and shutter speed for a given amount of lighting. I found that my camera when shooting at 180th shuttersoeed and below (1/60th, 140th....) produced an acceptable image for a given amount of light. If I switch the shutter speed to 1/100th, 1/125th or higher..... I found my image came back completely black (as if the shutter fired but the aperture did not open. The lens I was using at the time was the Nikkor 50mm 1.8. I am pretty sure this lens stays closed completely until the shutter fires and it then opens the aperture to the required amount during the exposure and closes it again when the shutter closes. I beleive this indicates a problem with my d50 but wanted to check with you guys and see what you thought. Any thoughts?