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海鸥牌２８─７０ｍｍＦ３．５─４．５变焦距镜头结构原理及故障修理（３）林绍卿（２）光栏组的装配与调整光栏组的装配步骤基本Ｌ按拆卸步骤反过来进行即可，个别步骤有调整，并有些注意要点，下面简述如下：①先准备一简易垫座，直径与定孔圈外国直径略小点即可。将定...
Seagull licensing 28 ─ 70mmF3.5 ─ 4.5 zoom lens structure principle and fault repair (3) Lin Shaoqing (2) the assembly and adjustment of the light bar group assembly steps of the light group basic L according to the disassembly step can be reversed, Individual steps are adjusted, and some points to note the following briefly: ① first to prepare a simple pedestal, diameter and diameter of the eyelet can be slightly smaller diameter. Will be set ...