I have done this on my 5D III

I found my 5D III has few spot after a day birding trip.  Change the setting to Bulb, and then mirror lock. Carefully using can of compress air to blow the dust away. 

First, give some practice with the compress air.  Don't shake the can and don't blow too long nor press the triggle to much. Always have the air can vertical. a squak of gental air is all you need.

Good luck!

所有跟帖： 

• thanks for sharing your experience -yigezi- ♀ (0 bytes) () 07/10/2012 postreply 17:56:44

• ！！！ 最好別用 canned air ！！！ -天天古狗- ♂ (148 bytes) () 07/10/2012 postreply 19:36:04

• 同意，這樣冒險不值得。還是用clean kit比較穩妥。另外少換鏡頭。我已經很久不用清潔CMOS。 -schatten- ♂ (0 bytes) () 07/11/2012 postreply 00:22:06