Disappointed

Disappointed! You have to pay for anything useful given Im in the field. You have pay for calculators, formulas and others, if you want the select the latest manufacturer lights, guess what you pay for that as well. Manuals are user manuals not service manuals. Very very basic info, the app should have been free with info offered or lack of. I feel I waisted my money and was ripped off.

Francesco A 81 about Lighting Handbook, v3.1.1