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I have a Nikon D3400 I bought brand new in August. It has about 12k photos now. I got the 2 lens kit directly from Nikon. I'm having some troubles with the aperture on the 18-55mm lens and occasionally with the 70-300mm lens. I use the 70-300mm lens less, so it may also have the same amount of problem. Basically, when I attach the lenses to the camera the preview I'm getting on the LCD screen or in the viewfinder is dark. I need to run the aperture setting up and down from min to max then take 1 or more photos to fix this problem. I have to do all this in manual focus mode or the camera will just cycle the AF and not let me take a photo. After taking a photo in manual mode, the viewfinder and LCD brighten up. It is as though the aperture was as closed as it could be. Sometimes, I need to take the lens off and put it back on and repeat the process.
Previously, I was getting the error, "Error, press shutter release button again" after which I merely cycled up and down with the aperture to clear the issue.
Does anyone here have specific experience with this sort of thing happening with their aperture controls? It seems to be a problem with the camera, not the lens, since it happens on both lenses sometimes.
