Distance conversion for XHA1 using WD-72H Wide Angle at DVinfo.net

Roger Shealy · December 16th, 2008, 06:01 PM

I've just purchased the WD-72H wide angle lens and would like to be able to pull tape for focus. Does anyone know the conversion for distance displayed on the screen to compensate for the Wide Angle (or better yet a way to make the camera compensate and display an accurate distance)?

David W. Jones · December 16th, 2008, 07:32 PM

It's a 1/3" CCD camera with a wide angle attachment.
Do you really need to pull tape to focus?

Roger Shealy · December 17th, 2008, 06:38 AM

Yes. When I can, I'd like to nail focus it and not trust this tiny viewfinder.

David W. Jones · December 17th, 2008, 12:17 PM

The camera does have magnification and peaking.
Also your distance display should be correct. Adding a wide angle lens does not change the distance from the object you are shooting. If an object is 12 feet away with the stock lens, it is still 12 feet away with the wide angle.

Roger Shealy · December 17th, 2008, 12:29 PM

David,

That doesn't seem to be correct. When I taped a good focus at 3' actual, it registered 4.5 on the screen.

Petri Kaipiainen · December 18th, 2008, 02:52 AM

I have not tested the distance scale against a tape measure with the 0.8X WA lens, but with a 0.6X Century WA the camera scale is way off.

With 0.8X it is perfectly possible to focus with auto or using the peaking/magnification, but turn off the speed focus thingy, it is blocked by the WA lens. I would trust my eyes more than a tape measure anyway with these cameras.

December 16th, 2008, 06:01 PM	#1
Roger Shealy Major Player Join Date: May 2007 Location: Fayetteville, GA Posts: 772	Distance conversion for XHA1 using WD-72H Wide Angle I've just purchased the WD-72H wide angle lens and would like to be able to pull tape for focus. Does anyone know the conversion for distance displayed on the screen to compensate for the Wide Angle (or better yet a way to make the camera compensate and display an accurate distance)?

December 16th, 2008, 07:32 PM	#2
David W. Jones Trustee Join Date: Dec 2006 Location: Little Rock Posts: 1,383	It's a 1/3" CCD camera with a wide angle attachment. Do you really need to pull tape to focus?

December 17th, 2008, 06:38 AM	#3
Roger Shealy Major Player Join Date: May 2007 Location: Fayetteville, GA Posts: 772	Yes. When I can, I'd like to nail focus it and not trust this tiny viewfinder.

December 17th, 2008, 12:17 PM	#4
David W. Jones Trustee Join Date: Dec 2006 Location: Little Rock Posts: 1,383	The camera does have magnification and peaking. Also your distance display should be correct. Adding a wide angle lens does not change the distance from the object you are shooting. If an object is 12 feet away with the stock lens, it is still 12 feet away with the wide angle.

December 17th, 2008, 12:29 PM	#5
Roger Shealy Major Player Join Date: May 2007 Location: Fayetteville, GA Posts: 772	David, That doesn't seem to be correct. When I taped a good focus at 3' actual, it registered 4.5 on the screen.

December 18th, 2008, 02:52 AM	#6
Petri Kaipiainen Major Player Join Date: Apr 2007 Location: Espoo Finland Posts: 380	I have not tested the distance scale against a tape measure with the 0.8X WA lens, but with a 0.6X Century WA the camera scale is way off. With 0.8X it is perfectly possible to focus with auto or using the peaking/magnification, but turn off the speed focus thingy, it is blocked by the WA lens. I would trust my eyes more than a tape measure anyway with these cameras.