campyone Offline Upload & Sell: Off
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I've owned a 3rd party collar and the Canon for my 70-200 f/4. The price differential is amazing but with the 3rd party I found that by lightly pressing the camera back with the camera in the collar the camera would move forward a little bit. When I did the same thing with the Canon collar nothing moved.
I don't know if the movement with the 3rd party collar really mattered or not, I don't usually press the back of my camera when making a photograph. But since the whole idea of the collar is to add stability, the fact that things could pretty easily be moved with the 3rd party didn't seem like a good thing.
The difference between them seemed to be in the collar lock, that was where the movement came from with the 3rd party collar as best I could tell.
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