概述

又称柔焦放大.暗室放大术的一种.是在放大机镜头前加柔光镜或用金属丝网、尼龙纱网、塑料网等替代柔光镜，使照片影像柔和的放大方法.光线透过柔光镜发散，并均匀、柔和地投射在相纸上.柔光镜表面的纹路密则柔光作用显著，纹路疏则柔光作用较小.放大时，用大光圈，柔光效果明显，用小光圈，柔光效果较差.散光式放大机投射光线均匀柔和，也具有柔光作用.其特点是，影像柔和、反差降低、可掩饰照片的缺点，烘托渲染朦胧的气氛，且不影响照片影像的清晰度.该放大方法通常使用于制作人物肖像照片. Also known as soft focus to enlarge. Darkroom as a surgery to enlarge. Zoom lens in front of the mirror or a soft metalwire, nylon screening over alternatives such as soft plastic net mirror, so that photo imaging soft amplification method. Light Soft diffuse through the lens, anduniform, gently projected in the paper. Soft mirror's surface texture is soft dense significant effect on the soft texture is less sparse. zooming in, with large aperture, soft effect Obviously, with a small aperture, soft less effective. astigmatism amplification to project light uniformly soft, but also has a soft effect.Itscharacteristics are, video soft, contrast reduction can disguise the shortcomings of photographs, contrast rendering hazy atmosphere, and the does not affect the photo imageclarity. The amplification method commonly used in the production of portrait photographs.