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I have a 3rd-party studio turntable that wirelessly triggers the shutter on IR-capable Canon cameras for automated shooting, however this obviously does not work with newer bluetooth-based camera bodies without IR receivers. I am an electronics engin...
Hi all.  I just received a used lens from MPB.com, an EF-S 18-135 IS STM, listed in excellent condition.  It's visibly and functionally in great shape except that the focus ring has significant play/wobble forward and backward (toward the front of th...