What the thread found

• Accuracy should be very close to perfect, with perhaps a single line of error acceptable due to gear lash on stiff lenses.
• Flex in motor mounting hardware is the most common cause of accuracy problems, so rigid mounting with thicker rods produces better results than thinner diameter rods.
• Each lens of the same focal length requires individual calibration adjustments even within the same brand.
• Initial calibration accuracy directly determines later recall accuracy, particularly at the infinity mark where calibration must be precise.

Depends on

• Discussion involves specific systems from 2008 and particular camera bodies mentioned.
• Accuracy tolerance described as subjective with only rough guidance provided.
• No systematic testing methodology described for commissioning.

Gear in this thread

HU3, MDR

Parts

Follow Focus

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