Dusting the 5D

[McKenzie]

My 5D periodically accumulates dust on the focus screen.  This is annoying because the dust shows up as sharp, black dots in the viewfinder.  So far, I've been able to remove the majority of the dust by removing the focus screen and blowing it off with a bulb blower.  

Now there appears to be a bit of dust on the focus point screen (the screen with the etched focus points on it).  This does not appear to be easily removable, and I am not sure how to clean it.   After reading several lengthy threads on this issue at dpreview.com and robgalbraith.com, I have concluded that using a blower inside the 5D is a bad idea.  It seems that some people who have done this have blown dust into other parts of the viewfinder that are harder to access.  Can anyone recommend a way to clean the focus point screen without sending the camera to Canon or using a blower?  I get the impression that it is very delicate, and I would not want to damage it.  It has been claimed (http://forums.dpreview.com/forums/read.asp?forum=1032&message=17053945) that pec pads an eclipse fluid can be used, but I would like to get confirmation from others before I try this.  Has anyone tried this?  Has anyone tried using the Visible Dust brushes for this purpose?

Any advice will be appreciated.

McKenzie

[madmanchan]

I realize you may not appreciate my answer, but my suggestion is to gradually learn to ignore the spots.  I suggest this because (1) they do not affect image quality, (2) they are hard to remove, (3) in trying to remove them you are likely to add more spots, or worse perhaps even scratch the focusing screen.

When I first noticed spots inside my 1D II and 5D and realized they would be hard to clean, I was rather frustrated too.  They seemed to distract from my looking through the viewfinder.  But eventually I just learned to ignore them.  When they get overly bad, I'll send the units to Canon for a standard clean/checkup.

Eric

[61Dynamic]

I'd imaging you could clean those up with a sensor brush.