JVC GY-HD100A (E)

Mat Thompson · December 6th, 2007, 05:50 AM

Hi guys
I don't know a lot about this camera or JVC cameras full stop. I'm a XL2 user and I have lots of EF lens that I would want to sue. What lens fitting does the JVC have and is a Canon lens adapter available to take my ef lenses?

Also is the mult factor the same when using them (x7.2)

Thanks in advance for any help.

Eric Gulbransen · December 6th, 2007, 09:39 AM

Mat I came from an XL2 as well. Put your seatbelt on.

Yes, same x7.2 "magnification"

I have Canon EOS glass and tried for quite a while to find a JVC to EOS adapter (knowing full well I'd have to adjust aperture while the glass was still mounted to the Canon). Couldn't find anyone who made one. It's such a niche market that they seem stuck on Nikons (at least that's what I found), because they have manual iris, not electronic. I know Cinevate makes EF and EOS adapter rings for their Brevis 35mm DOF adapter, but as far as simply mounting your 35mm still lenses to the JVC, you might need to get some used Nikon glass.

Bill Ravens · December 6th, 2007, 09:47 AM

You can purchase(from Canon) an EOS lens mount. You can also purchase(from Fujinon or JVC) a Fujinon lens mount. What remains to be found is the focal plane distance, which should be easy to determine. Once this is done, a machine shop can mate the lens mounts on a tube of appropriate length. Care must be taken to align the mounts planar and coaxial, of course, so precision machining will be required.

I would be willing to share in the cost of developing/fabbing such an item. Perhaps others would be, as well.

By the way, Canon makes an adapter to adapt EOS lenses to the XL2. The adapter allows manual aperture adjustment of the EOS lenses by the thumbwheel on the XL2. The electrical connections shouldnt be terribly difficult to figure out.

Eric Gulbransen · December 6th, 2007, 10:19 AM

Bill, I have a good relationship with a great machine shop through our racing. Do you think the focal plane distance might be written in some Canon spec sheet somewhere? Maybe a body mount ring to sensor spec even? Or do you think it's a start from scratch type of deal. You are right, the mount should be a breeze to have made once the proper dimensions are nailed down.

Bill Ravens · December 6th, 2007, 10:55 AM

Eric...
I've never seen a published number, but, it should be easy to get, if you look in the right place. There are several ways to get it that I can think of:
1-LETUS makes a Canon EOS mount for their adapter (http://www.letusdirect.com/cart/Letu...treme-p-6.html)
Perhaps they would share the info
2-Measure the distances involved on some lenses and camera bodies(I don't like this because you would need to touch the glass and the sensor block)
3-I'm sure someone on this forum has the info, if they could share

Mat Thompson · December 7th, 2007, 11:05 AM

Hey guys.

Thanks for the info. So the standard lens fixation is Nikon...ok so I could take the choice to swap to Nikon versions of my lenses...hhmmm that could be a pain. But I wouldn't need the EF adapter anymore and they can go for £150+.

Anyone draw any comparisons between this camera and the Canon XLh1 besides the cost of course :-) !?

December 6th, 2007, 05:50 AM	#1
Mat Thompson Trustee Join Date: Sep 2006 Location: Kent UK Posts: 1,397	JVC GY-HD100A (E) - Canon Lenses? Hi guys I don't know a lot about this camera or JVC cameras full stop. I'm a XL2 user and I have lots of EF lens that I would want to sue. What lens fitting does the JVC have and is a Canon lens adapter available to take my ef lenses? Also is the mult factor the same when using them (x7.2) Thanks in advance for any help.

December 6th, 2007, 09:39 AM	#2
Eric Gulbransen Major Player Join Date: Nov 2006 Location: Palo Alto, California Posts: 520	Mat I came from an XL2 as well. Put your seatbelt on. Yes, same x7.2 "magnification" I have Canon EOS glass and tried for quite a while to find a JVC to EOS adapter (knowing full well I'd have to adjust aperture while the glass was still mounted to the Canon). Couldn't find anyone who made one. It's such a niche market that they seem stuck on Nikons (at least that's what I found), because they have manual iris, not electronic. I know Cinevate makes EF and EOS adapter rings for their Brevis 35mm DOF adapter, but as far as simply mounting your 35mm still lenses to the JVC, you might need to get some used Nikon glass.

December 6th, 2007, 09:47 AM	#3
Bill Ravens Join Date: Nov 2001 Location: santa fe, nm Posts: 3,264 Images: 10	You can purchase(from Canon) an EOS lens mount. You can also purchase(from Fujinon or JVC) a Fujinon lens mount. What remains to be found is the focal plane distance, which should be easy to determine. Once this is done, a machine shop can mate the lens mounts on a tube of appropriate length. Care must be taken to align the mounts planar and coaxial, of course, so precision machining will be required. I would be willing to share in the cost of developing/fabbing such an item. Perhaps others would be, as well. By the way, Canon makes an adapter to adapt EOS lenses to the XL2. The adapter allows manual aperture adjustment of the EOS lenses by the thumbwheel on the XL2. The electrical connections shouldnt be terribly difficult to figure out.

December 6th, 2007, 10:19 AM	#4
Eric Gulbransen Major Player Join Date: Nov 2006 Location: Palo Alto, California Posts: 520	Bill, I have a good relationship with a great machine shop through our racing. Do you think the focal plane distance might be written in some Canon spec sheet somewhere? Maybe a body mount ring to sensor spec even? Or do you think it's a start from scratch type of deal. You are right, the mount should be a breeze to have made once the proper dimensions are nailed down.

December 6th, 2007, 10:55 AM	#5
Bill Ravens Join Date: Nov 2001 Location: santa fe, nm Posts: 3,264 Images: 10	Eric... I've never seen a published number, but, it should be easy to get, if you look in the right place. There are several ways to get it that I can think of: 1-LETUS makes a Canon EOS mount for their adapter (http://www.letusdirect.com/cart/Letu...treme-p-6.html) Perhaps they would share the info 2-Measure the distances involved on some lenses and camera bodies(I don't like this because you would need to touch the glass and the sensor block) 3-I'm sure someone on this forum has the info, if they could share

December 7th, 2007, 11:05 AM	#6
Mat Thompson Trustee Join Date: Sep 2006 Location: Kent UK Posts: 1,397	Hey guys. Thanks for the info. So the standard lens fixation is Nikon...ok so I could take the choice to swap to Nikon versions of my lenses...hhmmm that could be a pain. But I wouldn't need the EF adapter anymore and they can go for £150+. Anyone draw any comparisons between this camera and the Canon XLh1 besides the cost of course :-) !?