Focus Plane Mark on HZ-CA13U? at DVinfo.net

Shaun Roemich · February 27th, 2009, 02:37 PM

I have re-read Tim's review on the ciné lens adaptor and he references the focus plane mark on the PL adaptor. Can someone verify that this is the inscribed channel that encircles the adaptor approximately at the front glass element in the adaptor? I see no other marks on my adaptor.

Kennedy Maxwell · February 27th, 2009, 08:18 PM

I would think that a focal plane mark should be on the camera body.

Shaun Roemich · February 27th, 2009, 08:20 PM

Because it has optical glass in the adaptor that "refocuses" the S16 image for capture by the 1/3" CCDs, the plane is inside the adaptor.

Further research LEADS me to believe that it is in fact where the groove in the adaptor is.

Kennedy Maxwell · February 27th, 2009, 08:37 PM

On the product overview page at the JVC site it describes the focal plane as: "Also, the 52mm focal plane is clearly marked as a groove on the barrel."

Tim Dashwood · February 27th, 2009, 10:07 PM

Yes it is the groove on the circumference of the adapter. It didn't exist on the prototype I tested when I wrote the article but it was my big request of JVC and they added it for the final product.

Shaun Roemich · February 27th, 2009, 10:51 PM

Thanks for the clarification Tim. I'm likely going to be using it soon and I just wanted to find out where to measure from to set up backfocus.
PS. My serial number is 59. How cool is that...

February 27th, 2009, 02:37 PM	#1
Shaun Roemich Inner Circle Join Date: Sep 2002 Location: Vancouver, British Columbia (formerly Winnipeg, Manitoba) Canada Posts: 4,088	Focus Plane Mark on HZ-CA13U? I have re-read Tim's review on the ciné lens adaptor and he references the focus plane mark on the PL adaptor. Can someone verify that this is the inscribed channel that encircles the adaptor approximately at the front glass element in the adaptor? I see no other marks on my adaptor. __________________ Shaun C. Roemich Road Dog Media - Vancouver, BC - Videographer - Webcaster www.roaddogmedia.ca Blog: http://roaddogmedia.wordpress.com/

February 27th, 2009, 08:18 PM	#2
Kennedy Maxwell Regular Crew Join Date: May 2007 Location: Maryville, Tennessee Posts: 65	I would think that a focal plane mark should be on the camera body. __________________ Ken

February 27th, 2009, 08:20 PM	#3
Shaun Roemich Inner Circle Join Date: Sep 2002 Location: Vancouver, British Columbia (formerly Winnipeg, Manitoba) Canada Posts: 4,088	Because it has optical glass in the adaptor that "refocuses" the S16 image for capture by the 1/3" CCDs, the plane is inside the adaptor. Further research LEADS me to believe that it is in fact where the groove in the adaptor is. __________________ Shaun C. Roemich Road Dog Media - Vancouver, BC - Videographer - Webcaster www.roaddogmedia.ca Blog: http://roaddogmedia.wordpress.com/

February 27th, 2009, 08:37 PM	#4
Kennedy Maxwell Regular Crew Join Date: May 2007 Location: Maryville, Tennessee Posts: 65	On the product overview page at the JVC site it describes the focal plane as: "Also, the 52mm focal plane is clearly marked as a groove on the barrel." __________________ Ken

February 27th, 2009, 10:07 PM	#5
Tim Dashwood Wrangler Join Date: Aug 2005 Location: Toronto, ON, Canada Posts: 3,637	Yes it is the groove on the circumference of the adapter. It didn't exist on the prototype I tested when I wrote the article but it was my big request of JVC and they added it for the final product. __________________ Tim Dashwood

February 27th, 2009, 10:51 PM	#6
Shaun Roemich Inner Circle Join Date: Sep 2002 Location: Vancouver, British Columbia (formerly Winnipeg, Manitoba) Canada Posts: 4,088	Thanks for the clarification Tim. I'm likely going to be using it soon and I just wanted to find out where to measure from to set up backfocus. PS. My serial number is 59. How cool is that... __________________ Shaun C. Roemich Road Dog Media - Vancouver, BC - Videographer - Webcaster www.roaddogmedia.ca Blog: http://roaddogmedia.wordpress.com/