So I'm a photography newb. I have an entry level Nikon d3400 and after investigating macro lenses in my budget I purchased a Tamron SP Di AF 90mm Macro Lens 2.8. I was fully aware that Auto Focus would not work but that the lens would function normally anyway. However, when I attach the lens, the light meter is absent. Also, when I put the aperture dial on the smallest setting (as per the instruction manual instructed) I could adjust the aperture via the camera body, which it also failed to do. Can someone help me trouble shoot this, especially the absence of the light meter?
