I just bought a Kenko 1.4x teleplus pro 300 DGX, for my Rebel T1i. I hooked it up, to my EF 70-300mm 1:4-5:6 IS lens. When my camera is turned on, there is a sound, coming out from the lens continuously. Has anyone had this problem. And is my lens compatible with it. I would also like to know what your experience was with the Kenko 1.4x teleconverter. Your help would much appreciated.
I tried turning off autofocus, and the noise persisted. I then turned off Image stabilizer, and the noise stop. I only turn it back on, when I use the camera. Auto focus works great. I'm waiting for a sunny day, to really give it a good try.