디지털 카메라의 광학 로우패스 필터 - 로우패스필터 제거에 따른 선예도 향상 실험 -

Abstract

The role of the optical low-pass filter makes a curve soft through an anti-aliasing,and blocks Moire and infrared. Accordingly, if this optical low-pass filter is eliminated from a camera, theoretically the Sharpness is getting higher. Also,without the anti-aliasing filter the Moire will be formed. These results already come out. However, the theoretical results without numerical value are pointless. Through getting the numerical value of strengths and weaknesses, it is advisable to determine to use the optical low-pass filter or not by the judgement of a photographer. Now, most models of cameras are released without the optical low-pass filter. This phenomenon could be interpreted in having more points of excellence. In the other point of view, it is interpreted as being able to overcome the disadvantages. In this article, I offer the information which a photographer can decide whether he use a camera with or without the optical low-pass filter through I show how much the sharpness of a photograph with the optical low-pass filter is getting lower numerically.