European honeybees (Apis mellifera) have compound eyes made of tiny facets called ommatidia. The number of ommatidia is usually known in most model insects, but I cannot find reference for the European honeybees, despite bees being highly studied. How many ommatidia does a European honeybee have on average?
4700 - 5400, according to Somanathan et al. (2009). They base their reported values on two other papers.