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    Tilting Macro lens with no aperture ring

    Hello everyone, need some advice. I bought canon mount Sigma 105mm f/2.8 EX DG OS HSM Macro Description I chose 105mm for more working distance than 70mm. I thought it has aperture ring, as it says "Nikon mounts do not have an aperture ring." I assumed other mount has it. That's history, after...