Posted 28 February 2011 - 07:07 PM
DM4 Digital Motor
The DM4 is a micro-sized motor. It’s made specifically for driving light weight lenses where size and weight are critical, such as Steadicam and 3D rigs. In order to prevent wear and maintain its precision, the motor uses polished metal gears coated with super hard diamond-like-carbon to virtually eliminate wear.
The integral motor bracket with an adjustable rosette gear makes it easy to position the motor in tight places.
The DM4 is compatible with MDR-2, Digital Micro Force, and the single channel Video Lens Control units.
250g (complete with bracket)
Maximum Speed at output gear
Max Torque Output (peak)
Posted 28 February 2011 - 07:44 PM
Posted 28 February 2011 - 09:51 PM
Is the motor protocol different in the MDR1 that makes it incompatible?
to my knowledge it's the same, if it works with the DM1 it works with the DM4
Posted 01 March 2011 - 01:25 AM
but.... it's not the torquiest of motors, you're not going to spin a stiff lens in the cold.
Posted 01 March 2011 - 01:42 AM
Posted 01 March 2011 - 01:47 AM
according to Howard it is for Iris control and easy to move lenses and 3D apps.....
I'm Very aware of what it's intended use is. Doesn't mean that people won't use it as a focus motor
Posted 01 March 2011 - 02:12 AM
Cute little guy though.
Posted 01 March 2011 - 09:09 AM
I wonder how it compares to the small Heden (which also has built in mounting brackets but may be some of the most flexible of its kind). Eric, you've tried the Heden, right? Thoughts?
Posted 01 March 2011 - 11:33 AM
For a comparison:
dm1 with a pam bracket is 1.2 lbs.
dm4 is .55 lbs
heden m28vp is .7 lbs
m26ve is .5
Posted 13 September 2013 - 07:41 PM
I have an adapter for the DM-4 motor!
It will interface with my Pam bracket set-up.
Then you will be able to adjust it up and down.
Posted 14 September 2013 - 02:37 PM
The new mini Heden is meant to be as powerful as the large Heden. Certainly I've been using hedens for years on my MDR1 but rentely purchased a DM2 . The mini heden definitely still comes out of the box of tricks in awkward situations most notably in the AR - Omega rings. Hedens are definitely more flexible but I do love the DM2.