1. Free usages for powerpoints, lectures, proposals. No prior permission needed.
2. “You free, me free”. If you are doing educational pamphlets, newsletters, that are provided to non-paying members free of charge, there are no charges for photo usage. But please obtain permission first.
3. For any commercial uses, please contact met at huang@bees.net
4. For 1 and 2, please acknowledge photo source as: “Zachary Huang, beetography.com”.