[joachim]

[quote name='mst' timestamp='1280311104' post='1358']

Absolutely. The 5D Mark II has sensor cleaning built in.



Cameras that do not (like the D3x) will collect dust spots easily and, as already mentioned, these can be visible in the image, especially when stopped down and with wide angles. Honestly: not having sensor cleaning in the camera is a major pain with both the D3x as well as the M9.



To give you an impression, this is what I got out of the D3x after a few weeks without cleaning:







And yes, it looks even worse with a pinhole cap, even after excessive cleaning <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='' />



When in use, I clean both camera usually once a week.



-- Markus

[/quote]



Hi Markus,



Thanks, you just reminded me, that going Olympus was the right choice for me. I haven't cleaned my E-300 once in 4.5 years and my E-P1 in 10 month. Ok, I rarely shoot beyond f/8. I would hate to have to do it weekly <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/sad.gif' class='bbc_emoticon' alt='' />



Though I appreciate others think it is not a big deal.