Common Screens; Distance Entry - Cognisys STACKSHOT 3X Owner's Manual

Reset this setting to the default. This is the "uh oh" button. Let's say you accidentally changed
the shutter activation time to four hours but now don't remember what a "safe" setting is. You
could always load the factory default settings for everything but that might be a bit extreme. If
you just want to change this specific setting back to the default touch the "Reset" button.

3.2 Common Screens

There are a few common screens used frequently to enter information for StackShot 3X. While
these screens don't show it, there are some limits to what you're allowed to enter – but they're
pretty big. 10,000 shutter activations per motor move, maximum shutter activation time of 24
hours, etc... If you DO enter a value that is either too big or too small, the controller will nudge the
setting you entered to the nearest acceptable value.

3.2.1 Distance Entry

Distance is entered using a virtual numerical keypad. That is a fancy way of saying a "screen that
looks like the windows calculator". There are two different distance units supported: Metric,
and degrees. Why aren't inches supported? One main reason: Your camera and lens don't
think in inches. Also, whether it is focus stacking or running a complex motion profile you
usually visually choose the start, end, and everything in-between. One occasion you need to
spell out a distance is for focus stacking, and it is related to your depth of field – which is likely
going to be spelled out in "mm" or "um". Another would be the specific degrees of rotation.
All linear distances are entered in either "um" or "mm". If you're not familiar with metric:
um: A micrometer. A millionth of a meter. Very small – a human hair is on average 100um.
mm: A millimeter. A thousandth of a meter. Still pretty small – there is 25.4 mm in one
inch.
Here is an example of a linear distance-entry screen:
Here is the degree-entry screen:
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