1-5 of 5 Answers
The notched ring is to serve as a "thread spacer". If you need to create space between two items on the same thread plane, you screw on the notched ring, and spin it to where you want it to stop, then screw-on the other piece up to the other side of the spacer...so to speak.
Sorry, there was a problem. Please try again later.The notched ring is a locking ring and need only be used if adapting the hood to a lens that doesn’t have a 58mm bayonet. One would use a step up ring, attach the plastic bayonet with the locking ring, tighten the locking ring, then bayonet the hood onto the plastic bayonet
Sorry, there was a problem. Please try again later.Your filters may be the issue. Some are threaded and will accept the ring. This is the mounting ring for the tulip hood allowing a firm bayonet attachment.
Sorry, there was a problem. Please try again later.The fine threaded side of the ring threads into the lens, where a filter would normally attach (or into the filter if one is mounted). The shield then locks into the notches. The shield can be mounted in the typical shield forward position, or it can be reversed for storage.
Sorry, there was a problem. Please try again later.Just part of it being a universal fit. For lenses that are not compatible with the bayonet mount this is just the other half of the bayonet; screws onto the lens to provide the bayonet mount to allow for quick removal. On my Canon discarded for 2 lenses, had to use for the older one.
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