How do I determine whether the dust particle

[dRebelXT]

are on lens or the mirror?

I shot a number of pictures, but there were always two dust particles on the
top of the pictures, which became noticeable when I shot the sky. Cleaned
the lens and blowed the inside of the cam, but seem never can get rid of them. :embrass:
What should I do now?
:what:

 

[Del_CtrlnoAlt]

send your camera for servicing... some dirt are really hard to remove...

 

[HeWolf]

If on mirror, you'll see it thru the view finder when aiming, but will not show on picture.

It's the 'sensor' or the lens.

change a lens, if the dust disappears, then it's on the sensor.