I have been finding both the Arca lens charts and the eModule far too course in their distance scales for use especially with longer lenses like the SK60XL or SK120ASPH.
With the 120 for example, a foot at near distance can make a difference of several major scale markings on the Arca helical. So the look up charts and the eMC are not fully utilizing the refinement of the Arca helical as far as I can tell.
So I built a calculator in Excel. It is currently only in feet and has coverage for 32HR, 40HR, 35XL, 43XL, 60XL and 120ASPH. You put in your CoC and offset for the back. These numbers do not change from lens to lens. The you input your distance in feet. The app returns helical values for all the supported lenses and shows the color of the helical revolution as well (White, Red, Blue, Green, Yellow).
The UI is not the greatest, and I as soon as I get some time, I will create a version in "Numbers" so it can be run on an iPhone.
I had to post here as a zip file, so it will need to be uncompressed. You will also have to enable macros when you open it.
Appreciate any thoughts and how it can be improved.
This free, but please don't make it better and sell it back to me