Reading focal lenth and distance from lens at DVinfo.net

Tramm Hudson · July 6th, 2009, 08:24 PM

I found the periodic message from the lens to the camera that encode the focal length and focus distance, and have decoded the message to be able to draw an onscreen measurement of these two values to aid the DP. Here's a short demo: Magic Lantern - EF Zoom lens on Vimeo

The soon-to-be-released 0.1.5 Magic Lantern firmware will feature them in the top of the screen, along with HDMI and config file support. The 1 Hz audio ticking bug has also been squished.

Chris Hurd · July 6th, 2009, 08:42 PM

Awesome. That's going to be a valuable real-time aid, even better than the zoom number scale used in the XH and XL H series. Outstanding, Tramm!

Robert Esmonde · July 7th, 2009, 07:23 AM

That's fantastic!

Thanks again Tramm.

July 6th, 2009, 08:24 PM	#1
Tramm Hudson Wizard Status Join Date: Jun 2005 Location: New York, NY Posts: 239	Reading focal lenth and distance from lens I found the periodic message from the lens to the camera that encode the focal length and focus distance, and have decoded the message to be able to draw an onscreen measurement of these two values to aid the DP. Here's a short demo: Magic Lantern - EF Zoom lens on Vimeo The soon-to-be-released 0.1.5 Magic Lantern firmware will feature them in the top of the screen, along with HDMI and config file support. The 1 Hz audio ticking bug has also been squished.

July 6th, 2009, 08:42 PM	#2
Chris Hurd Obstreperous Rex Join Date: Jan 2001 Location: San Marcos, TX Posts: 27,366 Images: 513	Awesome. That's going to be a valuable real-time aid, even better than the zoom number scale used in the XH and XL H series. Outstanding, Tramm! __________________ CH Search DV Info Net \| 20 years of DVi \| ...Tuesday is Soylent Green Day!

July 7th, 2009, 07:23 AM	#3
Robert Esmonde Regular Crew Join Date: Nov 2006 Location: Dublin, Ireland Posts: 51	That's fantastic! Thanks again Tramm.