On my brand new Sigma 150-600 C, I discovered today that rotating the camera using the Colar was not a pleasant experience 😢
W H Y ?
So this evening I removed the collar turning the top central tag to the "remove" tag bottom left.
To my big surprise, I found black dirt on the lens body where the collar touches the body.
Inside the collar seating, there was a scrap 3cm long. Only on one side.
I checked all the bearings but none of them has any sign or scrap.
So I decided a little WD40 was in order, but not spraying it!!!
Just a few drops, carefully positioned into the collar seating, without touching or dirtying the central friction ring.
Now cleaned from paint scraps and lubricated...
... it turns with one finger and closes firmly only tightening a little the screw
( fantastic results for a 6 minutes job )
www.dropbox.com/s/09hxqn711wryzvu/WhatsApp%20Video%202023-06-22%20at%2023.29.43.mp4?dl=0