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9.3 Stack Speed
This is the maximum speed the rail will move during the focus stacking process. It may not
reach this speed if the distance the macro rail needs to move is small. This setting lets you have
independent control over the stack speed verses the position speed discussed in section 9.4
below.
9.4 Fwd/Back Speed
This is the maximum speed the macro-rail will move when using the position sliders:
This setting lets the position adjustment speed be independent from the maximum speed
allowed while running the focus stack (see section 9.3 above).
9.5 Ramp Time
“Ramp Time” is how long the motor will spend accelerating to its final speed for a move or
position adjustment. Motors don’t enjoy instantaneous acceleration – so it’s good to have a bit
of ramp time. Also, increasing the ramp time will reduce the vibration introduced into your
camera setup.
9.6 Torque
Torque is how much “power” the motors have. A valid setting is from 1 – 10. If StackShot 3X is
having difficulty moving your setup you may have to increase this torque setting. Why not just
run at maximum torque all of the time? Two reasons: If you’re running from battery it will
significantly decrease your battery life. Also it increases the amount of audible noise from the
motors.
9.7 High-Precision
“High-precision” is usually only required when using the macro-rail at less than 50um step-sizes.
With “High-precision” turned on the controller will always apply a constant torque to the motor
even when it isn’t moving. As with most things in life there are always trade-offs. First you will
notice a high-pitch whine from the motor when it is not moving. Second, high-precision will
decrease battery life.
9.8 Auto-Return
Normally when using the macro-rail for focus stacking you would want it to return to the
beginning of the stack when it completes. With “Auto-Return” set to “Yes”, that is exactly what
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