A Lens-Pinhole System for Macrophotography in Controlled Perspective and with Increased Depth of Field

Abstract

Macrophotography is the process of taking larger-than-life photographs, but it has serious drawbacks of shallow depth of field and flatter perspective. An optical system which has a pinhole in front of a taking objective has been studied. Optimum diameter of the pinhole and the positioning of the optical elements which provide adequate resolution, perspective and depth of field have been calculated. The experimental results show that the lens-pinhole system gives sufficient perspective and deep field for small objects.