What the thread found

• The Heden M26VE and Preston DM2 share the same motor from Faulhaber but differ in gearbox design, affecting speed and torque characteristics
• Heden M26VE motors exhibited noticeable lag during fast focus racks from close distance to infinity when used with a Preston MDR3, while Preston DM1X motors performed without perceptible delay
• Speed adjustments on the MDR3 had no observable effect on M26VE motor movement across different settings
• Older Heden M26VE units required firmware updates to work optimally with Preston MDR3, and could be retrofitted to achieve performance approaching the DM1X
• Preston DM1X is considered the strongest and fastest motor option, while M26VE compares to the DM2 in performance capabilities

Depends on

• The issue was only tested with three older M26VE motors at a single checkout session, limiting sample size
• No maximum speed specification was available from Heden at the time of the discussion
• An unresolved claim suggested MDR3 may have less output power than MDR2, but this was secondhand information
• The exact nature of the MDR3 firmware update needed for M26VE compatibility was not detailed in the thread

Gear in this thread

MDR

Parts

Follow Focus

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