[wmh714]

我有支圖麗超廣角鏡 C機用,
但係12mm一按景深預覽,光圈葉就卡住左,轉去15mm以上再按一次又無問題,
同埋係12mm收光圈影相會出Error叫我「清潔鏡頭接點」
係咪光圈葉有問題? 定係佢唔夠油?

[h0001244]

this problem happened to me in both lens before
Sigma 28-200
Canon 17-85

Conclusion: apeture parts failure

[wmh714]

so did u bring lenses to be repaired?

[h0001244]

both repaired
but 28-200 failed twice.....this might be the design problem I guess