Nikon Problems Ray Can You Help

Rocky, A quick way to check to see if your aperture controller on the camera is working is to press the small black button down at the intersection of where the lens attaches to the body. As your holding it with the lens pointed towards your subject it's towards the bottom and on the right side. It's default setting is aperture preview unless you have changed it. From your statement that it is with all lenses, my guess is its the communication between the camera and lens. It could be as simple as cleaning the contacts.

thank you all so much. here is some thing I have found out. control my Nikon. that program will not make adjustment to a Nikon d7100. this is due to Nikon control over its camera. so what you see for reading on the computer screen don't mean a thing. Nikon used a different name for it. but the trues is it is there control ok so I put my standard kit lens on 18 to 55 mm ray here is the setting right know in manual looking at the rear screen shutter speed is 1/6400 F:5.6 I have set the ISO to 100 at the top first symbol is AF_S see I think I have set some thing wrong can you help me. I figure the easy way take a photo hope this helps ray . I had been working in A mode what do you sugest any help greatly appreciated

thank you ray spent most of the day trying to figure out what I touched. I did some research on control my Nikon. I found out the reading on the computer screen don't mean a thing. that some thing they don't explain. some times cheap is not good anyway took the manual reset the camera. its taking images no problem. I will have to look into getting this program. thank you ray have a great one