EF Adapter and no manual Iris at DVinfo.net

Ken Diewert · November 10th, 2006, 12:36 PM

I have a Canon EF 70-300 4-5.6 that I wanted to put on the front of my H1. The lens if fully auto. Does have maual zoom and focus but no iris ring. Does anyone know if I can maintain iris control through the Cam with this lens.

Thanks

Sonny Horsfall · November 10th, 2006, 01:25 PM

Yes you can using the iris control on the camera. None of the EF lenses have an iris ring. You can simulate an auto iris by using the lock on the EF adapter, it's a bit noisy though with some lenses.

Ken Diewert · November 10th, 2006, 01:33 PM

Thanks Sonny,

I did find out on the Canon site that it is listed as a compatible lens for the EF adapter. I'm just about to buy an EF adapter, and wanted to check first.

Henry Gray · November 10th, 2006, 02:00 PM

Hi Ken,

The simple answer is yes. With the camera set to "A" when you press the
button on the left hand side of the EF adaptor this will automatically set the
exposure.
With the camera set to "M" the iris and shutter controls will work as normal, just the same as when using the standard lens.

November 10th, 2006, 12:36 PM	#1
Ken Diewert Trustee Join Date: Mar 2006 Location: Vancouver Island, Canada Posts: 1,200	EF Adapter and no manual Iris I have a Canon EF 70-300 4-5.6 that I wanted to put on the front of my H1. The lens if fully auto. Does have maual zoom and focus but no iris ring. Does anyone know if I can maintain iris control through the Cam with this lens. Thanks __________________ C100, 5DMk2, FCPX

November 10th, 2006, 01:33 PM	#3
Ken Diewert Trustee Join Date: Mar 2006 Location: Vancouver Island, Canada Posts: 1,200	Thanks Sonny, I did find out on the Canon site that it is listed as a compatible lens for the EF adapter. I'm just about to buy an EF adapter, and wanted to check first. __________________ C100, 5DMk2, FCPX

November 10th, 2006, 02:00 PM	#4
Henry Gray Regular Crew Join Date: Jan 2004 Location: Selkirk, Scottish Borders, Scotland, UK Posts: 60	EF Adaptor Hi Ken, The simple answer is yes. With the camera set to "A" when you press the button on the left hand side of the EF adaptor this will automatically set the exposure. With the camera set to "M" the iris and shutter controls will work as normal, just the same as when using the standard lens. __________________ henry g

November 10th, 2006, 01:25 PM	#2
Sonny Horsfall Regular Crew Join Date: Nov 2004 Location: Leeds, UK Posts: 29	Yes you can using the iris control on the camera. None of the EF lenses have an iris ring. You can simulate an auto iris by using the lock on the EF adapter, it's a bit noisy though with some lenses.