Clean Your DSLR's CCD or CMOS

What you need to prepare:
Alcohol, 3M Magic Tape, Cotton Swabs and your DSLR.


Then, put tape on sensor. Do this by using a swab.



After that, use alcohol to clean sensor. It is unnecessary, if everything is fine after using tapes.


Final, take a picture by selecting a small aperture (large aperture value). If there is nothing , congratulations.


(清理數位單眼相機的感光元件, CCD CMOS )