So I just got a Canon Rebel T4i and I'm having trouble with my lens (18-135mm STM lens). It's when I have my camera on movie mode, when I'm setting my aperture the blades won't change. I can only set to f/3.5 and f/20, and when I keep trying to change it my camera will give me error 01. So I clean the lens contacts and when I try again, my lens makes a noise and error 01. please help. I don't know what to do...
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