1¡¢»õ¼ÜÐÎʽ£ºÖÐÁ¿DÐÍ»õ¼ÜÊÇÖÐÁ¿ÐÍ»õ¼ÜϵÁÐÖÐÓû§ÒªÇó½Ï ´óÔغÉʱѡÔñµÄÀíÏë²úÆ·£¬Æä½á¹¹ÊÇÓÉÖùƬ¡¢ºáÁº¡¢²ã°å²å½Ó¶ø³É¡£ÈÎÒ»²ã¿ÉËæ±ãµ÷½Ú£¬½Ú¾à50mm,µ÷ÕûËæÒâÐÔ½Ï´ó¡£ 2¡¢»õ¼ÜÖÆÔ쾫ÃܶȣºÁ㲿¼þ²ÉÈ¡Àä³åÄ£¾«ÃÜ»úе³å¿×¶¨Î»£¬±£Ö¤Æä¿×¾àÒ»ÖÂÐÔ¡£
3¡¢»õ¼Ü½á¹¹Ìص㣺²ÉÓûúе³å¿×ʹÖùƬ¡¢ºáÁº£¬ÒÔб²å½á¹¹Ëø½ô£¬¾ßÓÐ×°²ð·½±ã£¬ÎÞÐèÓÃÇ¿Á¦£¬×ÔÈ»Ëø¶¨¡£
4¡¢°²È«ÐÔÄÜ£ºÔÚÖùƬÓëºáÁºÁ¬½Ó´¦ÅäÓб£ÏÕËø£¬½«±£Ö¤Æä²»±»·ÇÕý³£×²Ï£¬±ÜÃâ²»±ØÒªµÄËðʧ¡£