On Jul 31, 2006, at 9:16 AM, [EMAIL PROTECTED] wrote:

> You're right of course. But generally when I've seen sensor dirt  
> it's much more of an indistinct circular blob, and I've never seen  
> it in black. But I'll clean both sensor and lens. Both are overdue.

Just like dust on slide film prior to exposure, sensor dust will  
block light and show up dark or black.  Most sensor dirt I have seen  
is pretty distinct in outline.  Don't bother cleaning the lens.  This  
has nothing to do with the lens -- trust me.

Bob

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