The elaborate courtship rituals of many fly species have been studied in some detail. Specific roles for multiple sensory systems, including olfaction, audition, and vision, have been described, with vision receiving the least attention in recent studies. While there is much to see during a courtship “dance”, these interactions have often been described from the perspective of the observing scientist, and not carefully considered from the vantage of a courting male or an evading female fly. In Drosophila melanogaster it has been proposed that male flies use vision to track the female’s head, abdomen, and extended wing location, and to judge the receptivity of females based on their locomotion. However, it is not clear whether (or how much) visual signals are used to determine if the courtship target is a member of the same species. For species that are similar in size, the conspecific is likely identified primarily via other modalities, although it is also likely that flies use vision to exclude false target, either by size or appearance. In order to estimate the visual capabilities of different, closely related species, we have undertaken a comparative anatomical study of the eyes of three species in the Drosophila melanogaster subgroup (D. melanogaster, D. simulans and D. mauritiana). We use micro-CT technology to image the entire optical apparatus in a single isotropic image volume with single-photoreceptor level resolution. In particular, this allows us to measure the resolution, viewing directions, visual acuity, and zone of binocular overlap. We will present a comparison of these eye maps across these three species, while also comparing males to females of each species. Based on our detailed understanding of the D. melanogaster visual system, we will speculate about how the sibling species’ vision may differ and make predictions about the possible function of vision in courtship.