Acuity Test Images (image) The Optical Society Caption Three objects -- a disk, triangle, and square - were used to test the acuity of the imaging technique. The left image reveals the objects as they would appear if directly sampled. The middle image is reconstructed for collected photons and shows a distorted disk and a rounded square. The triangle was rendered most clearly. The image on the right shows the objects as they would be seen from the side. Little spatial information is evident from this perspective. Credit Optics Express Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.