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2009年秋,一位影友拿来一款AF24～120mmF3.5～5.6D镜头,其固定前镜组的3个螺丝从结合镜筒上脱出一部分。笔者打开前镜组镜口压圈发现生产时3个固定螺丝帽忘了胶封,重新将3个螺丝固定后并将螺丝帽胶封。笔者以为这位影友爱护器材不够,是镜头受了震动致使前镜组螺丝脱出镜筒,认为是个例。今年先后又有两位影友拿来同一型号的镜头,其中一位影友前镜组的3个固定螺丝完全从结合镜筒上脱离下来!打开前镜组镜口压圈发现3个固定螺
In the fall of 2009, a shadowy friend brought in an AF24 ~ 120mmF3.5 ~ 5.6D lens, and the three screws of the fixed front mirror group were partially removed from the combined lens barrel. I opened the front mirror mirror pressure ring found that the production of three fixed screw cap forgot the rubber seal, re-three screws and the screw cap rubber seal. I think this shadow Friends of love equipment is not enough, the lens is affected by the vibration caused by the former group of screws out of the tube, think it is an example. This year has another two shadow friends brought the same type of lens, one of the Friends of the Friends of the former group of three screws completely separated from the combined lens barrel! Open the front mirror group mouth pressure ring found three screws