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. 2020 Oct 30;6(44):eabd0460. doi: 10.1126/sciadv.abd0460

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Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 2 — Reflectivity image of the resolution test target measured using lenses F₃ with different focal lengths f₃. The first image corresponds to the f₃ = 25 mm; the insets show results for f₃ = 15 mm and f₃ = 4 mm.