| Large aperture constraints require an achromatic lens for situations needing superior image quality and color correction. |
| During speech, singing, or playing a wind instrument, the size of the aperture is narrowed and varied, to produce sounds of different pitch. |
| Adding an aplanatic meniscus lens to an achromatic lens can increase relative aperture without introducing additional spherical aberration. |
| My muscles bunched up, too, as I lifted myself into the aperture, but I didn't have any fat to bunch up with it. |
| The widest zone begins with a belt, composed of two cords and two ribbons, geometrically ornamented, while the aperture is wavily etched. |
| Using reflectometers, reflected light of a surface is measured in an angle range which is limited by aperture dimensions. |
