Filter ring lock adaptor...? at DVinfo.net

Peer Landa · July 7th, 2010, 02:17 AM

Since I couldn't find an appropriate DvInfo forum for this question, I'll post it on this one since it's here I spend most of my time: I would like to lock some 77mm & 52mm lens/filter/lens securely together, but yet make it possible to unlock (hence, glue is out of the question). Is there any filter rings, or some sort of adaptors, that can do this?

Any help or pointers appreciated.

-- peer

Bill Pryor · July 7th, 2010, 08:51 PM

If you want to put a 77mm filter on a 52mm lens, you need a 52-77mm stepup ring, readily available at B&H and other places.

Peer Landa · July 8th, 2010, 02:18 AM

Quote:

Originally Posted by Bill Pryor

If you want to put a 77mm filter on a 52mm lens, you need a 52-77mm stepup ring, readily available at B&H and other places.

No, I'm not looking for a step-down/up ring -- what I need is two rings/adaptors that LOCK together (to prevent the lens from unscrewing and fall off during follow-focus pulls).

-- peer

Bill Pryor · July 9th, 2010, 12:55 PM

Oh, OK. I've never known any to loosen up when focusing. The focus ring is well away from the very front of the lens on most lenses. Also, a filter that's difficult to remove because it's too tight is a lot more common than one that loosens up. In fact, I carry one of those rubber disc jar lid openers in my bag to remove stuck filters because if you try to turn them by squeezing the edges they only get worse.

Peer Landa · July 9th, 2010, 02:19 PM

Quote:

Originally Posted by Bill Pryor

Oh, OK. I've never known any to loosen up when focusing. The focus ring is well away from the very front of the lens on most lenses.

This is an anamorphic lens that attaches via a series of filter rings.

-- peer

Warren Ix · July 17th, 2010, 09:39 AM

I have the same issue with an anamorphic adapter. If you use a standard filter step ring, how do you insure that the anamorphic is in the proper orientation while keeping the rings tight?

We need some sort of rotating/locking collar between the filter threads to allow setting the anamorphic lens. Otherwise, I think it would be fairly easy to modify a step ring to have set screws which would lock it in place.

Talk to a camera repair shop about this. Usually, repair guys are pretty creative with custom work.

Alan Doyle · July 17th, 2010, 08:26 PM

these are pretty slick...

anamorphic lens mounting adapter cool... - eBay (item 180533356969 end time Jul-24-10 19:19:49 PDT)

July 7th, 2010, 02:17 AM	#1
Peer Landa Major Player Join Date: Jan 2008 Location: Norwegian lost in California Posts: 890	Filter ring lock adaptor...? Since I couldn't find an appropriate DvInfo forum for this question, I'll post it on this one since it's here I spend most of my time: I would like to lock some 77mm & 52mm lens/filter/lens securely together, but yet make it possible to unlock (hence, glue is out of the question). Is there any filter rings, or some sort of adaptors, that can do this? Any help or pointers appreciated. -- peer __________________ www.NoPEER.com

July 17th, 2010, 08:26 PM	#7
Alan Doyle Tourist Join Date: Dec 2008 Location: London UK Posts: 3	anamorphic mounting clamps these are pretty slick... anamorphic lens mounting adapter cool... - eBay (item 180533356969 end time Jul-24-10 19:19:49 PDT)

July 7th, 2010, 08:51 PM	#2
Bill Pryor Contributor Join Date: Jan 2003 Location: Kansas City, MO Posts: 4,449	If you want to put a 77mm filter on a 52mm lens, you need a 52-77mm stepup ring, readily available at B&H and other places.

July 9th, 2010, 12:55 PM	#4
Bill Pryor Contributor Join Date: Jan 2003 Location: Kansas City, MO Posts: 4,449	Oh, OK. I've never known any to loosen up when focusing. The focus ring is well away from the very front of the lens on most lenses. Also, a filter that's difficult to remove because it's too tight is a lot more common than one that loosens up. In fact, I carry one of those rubber disc jar lid openers in my bag to remove stuck filters because if you try to turn them by squeezing the edges they only get worse.

July 17th, 2010, 09:39 AM	#6
Warren Ix New Boot Join Date: Dec 2005 Posts: 8	I have the same issue with an anamorphic adapter. If you use a standard filter step ring, how do you insure that the anamorphic is in the proper orientation while keeping the rings tight? We need some sort of rotating/locking collar between the filter threads to allow setting the anamorphic lens. Otherwise, I think it would be fairly easy to modify a step ring to have set screws which would lock it in place. Talk to a camera repair shop about this. Usually, repair guys are pretty creative with custom work.