[magtack]

近日發現支17-85於85mm焦距"AF"對唔到焦,17-70mm則無問題.
請問各位ching有何解救方法. 如果回原廠修理貴唔貴?

[jsklee]

are you within warranty?

[magtack]

支鏡是二手買的, 已無保養. 只怪自己無小心試清楚. 又唔想賣番出去騙人.

[jsklee]

You can still go to the canon camera shop to get it fixed. They may charge you more if the lens is over warranty period.

[iso_ray]

用少15mm啦, 上cs好那利

[magtack]

Actually I found that the problem happen at 85mm range only, so if the repairing charge too expensive, I'll agree iso-ray's suggestion.
Anyway, thx to those ching.