Canon GL2 outer non-threaded mount at DVinfo.net

Alain Bellon · February 2nd, 2006, 05:30 PM

I have a GL2, I am building an optimized version of my DOF adapter (now that I have experimented with it) and I am wondering...

The camcorder has two ways to affix something at the end of the lens. First is the usual screw-in mount, where I would normally attach UV filters or a wide angle lens. But then on the outer area there is a bayonet-type mount where the original light-cover (small matte box of sorts) is attached.

It seems to me a good idea to attach a DOF adapter to the outer bayonet mount, instead of the threaded mount. Does anyone know what this mount in the GL2 is called?

So that I can buy some kind of adapter ring to attach my DOF adapter. Or is this a bad idea?

Andrew Todd · February 2nd, 2006, 06:12 PM

ive only heard it called a bayonette mount

something like this might work..but i dont know the diameter of this adapter so i dont know if its the 58mm that you need then if needed add some step down rings

http://cgi.ebay.com/Zeiss-Icarex-Bay...QQcmdZViewItem

Bob Hart · February 3rd, 2006, 02:23 AM

What you describe is the method I use to attach the body of my adaptor to the PD150 camera. The close-up lens (Century Optics7+ achromatic dioptre) goes in the 58mm filter mount thread first, then I fit the adaptor on to the camera around the lens onto the lens hood bayonet mount.

This serves three purposes.

The alignment of the close-up lens to the camera is better than I could hope to achieve by any other method.

Attaching the adaptor to the bayonet mount means the fine 0.7mm filter threads are less likely to be worn out or injured. The bayonet mount is wider and on a part of the camera body which is a little more robust.

Except for leaving the close-up lens on the camera, the adaptor can be mounted and disconnected from the camera very quickly.

Graham Bernard · February 3rd, 2006, 02:58 AM

Quote:

Originally Posted by Alain Bellon

It seems to me a good idea to attach a DOF adapter to the outer bayonet mount, instead of the threaded mount. Does anyone know what this mount in the GL2 is called?

So that I can buy some kind of adapter ring to attach my DOF adapter. Or is this a bad idea?

Overall I like your thinking, and have thought the same. However:

1/- The bayonet is for the Canon Hood. Yes? Like the Hood you will need a locking device/system/screw to retain the adaptor.

2/- I wouldn't hold out too much on the "accuracy" in using this comparatively "crude" mount for something like a lens system. I'm no lens specialist, but my natural instincts tell me that it may be an important factor.

3/- The "screw-in" bayonets - as above - will obviously be centered.

4/- Somehow, unless there are devices that "twist 'n grip", like the Hood, you may well need to fabricate one. I suppose there is an option of "acquiring" a spare Hood, cutting it back and then doing what you need to do to then mount this to the front. OOps! Now how accurate does one need the 4:3 GG element to be in the correct orientation for the camera? Would you get enough rotation/adjustment for this? Is it essential?

Grazie

Alain Bellon · February 4th, 2006, 02:35 PM

Thank you all for your responses.

I may just try to make a mount from aluminium. Or buy one of those Zeiss adapters and modify it.

Rolland Elliott · December 27th, 2006, 01:47 PM

Call up canon and aks for the parts department $20 plus $6 for shipping.

I just ordered four.

Peace, Rolland

February 2nd, 2006, 05:30 PM	#1
Alain Bellon Regular Crew Join Date: Jan 2005 Location: LA Posts: 130	Canon GL2 outer non-threaded mount I have a GL2, I am building an optimized version of my DOF adapter (now that I have experimented with it) and I am wondering... The camcorder has two ways to affix something at the end of the lens. First is the usual screw-in mount, where I would normally attach UV filters or a wide angle lens. But then on the outer area there is a bayonet-type mount where the original light-cover (small matte box of sorts) is attached. It seems to me a good idea to attach a DOF adapter to the outer bayonet mount, instead of the threaded mount. Does anyone know what this mount in the GL2 is called? So that I can buy some kind of adapter ring to attach my DOF adapter. Or is this a bad idea?

February 2nd, 2006, 06:12 PM	#2
Andrew Todd Major Player Join Date: Oct 2005 Location: Saint John, CANADA Posts: 633	ive only heard it called a bayonette mount something like this might work..but i dont know the diameter of this adapter so i dont know if its the 58mm that you need then if needed add some step down rings http://cgi.ebay.com/Zeiss-Icarex-Bay...QQcmdZViewItem __________________ video : xl2 / letus35xl / bogen 503 photo- canon 1dmkII - bronica etrsi

December 27th, 2006, 01:47 PM	#6
Rolland Elliott Regular Crew Join Date: May 2003 Location: Charlotte, NC 28273 Posts: 108	Call up canon and aks for the parts department $20 plus $6 for shipping Call up canon and aks for the parts department $20 plus $6 for shipping. I just ordered four. Peace, Rolland __________________ Rolland Elliott

February 3rd, 2006, 02:23 AM	#3
Bob Hart Inner Circle Join Date: Dec 2003 Location: PERTH. W.A. AUSTRALIA. Posts: 4,477	What you describe is the method I use to attach the body of my adaptor to the PD150 camera. The close-up lens (Century Optics7+ achromatic dioptre) goes in the 58mm filter mount thread first, then I fit the adaptor on to the camera around the lens onto the lens hood bayonet mount. This serves three purposes. The alignment of the close-up lens to the camera is better than I could hope to achieve by any other method. Attaching the adaptor to the bayonet mount means the fine 0.7mm filter threads are less likely to be worn out or injured. The bayonet mount is wider and on a part of the camera body which is a little more robust. Except for leaving the close-up lens on the camera, the adaptor can be mounted and disconnected from the camera very quickly.

February 4th, 2006, 02:35 PM	#5
Alain Bellon Regular Crew Join Date: Jan 2005 Location: LA Posts: 130	Thank you all for your responses. I may just try to make a mount from aluminium. Or buy one of those Zeiss adapters and modify it.