笔者有一台凤凰205相机,摄影时测距调焦正确,但照片上人物模糊,最清晰的像平面前移或后移(在此称像平面“飘移”)。在器件无缺损的前提下,按下列方法进行校正,获得了满意的效果,读者不妨一试。工具:固定相机的三脚架、小螺丝刀,宽35mm、长约50mm的毛玻璃(普通护卡膜或其它半透明片材亦可代用)。校正程序:①卸下相机后盖,用粘胶片将毛玻璃固定在焦平面上。②将相机固定在三脚架上,并将镜头对准约10m处的轮廓清晰、反差强烈的物体。 The author has a phoenix 205 camera, when shooting the rangefinder focus is correct, but the photos on the characters blurred, the clearest like the plane forward or backward (here called the plane “drift”). No defect in the device under the premise, according to the following method of correction, to obtain satisfactory results, the reader may wish to give it a try. Tools: Fixed camera tripod, a small screwdriver, 35mm wide, about 50mm thick glass (ordinary card film or other translucent sheet can also be used instead). Calibration procedures: ① remove the camera back cover, with a glass wool fixed in the focal plane. ② The camera is fixed on a tripod, and the lens at about 10m at a sharp outline, strong contrast objects.