[chun7790]

本人係新手.尋日用350d約映左200張相.
但係由100張開始發現係一個固定位置出現左一撻陰影,
張張相都有..究竟係乜野問題...我已經檢查過鏡頭表面係冇dirty既野.
駛唔駛拎番去canon check呢?
pls help!!

[insane]

dust on CCD. Clean it by Canon during warranty period but sooner or later you got to learn it yourself. This can get very expensive.

[dunny]

Back to basic. did you use flash-light? Is it the shadow of your lens?