Dust in Canon EF 70-200L f/4 lens

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G.T. - 26 Feb 2005 22:43 GMT

Quick question. I haven't noticed it in my photos but there is a piece of
lint/dust on the inside of the front element of my 70-200 lens. It's close
to the middle of the element. Will I not notice it because of it being
heavily blurred? If it is a problem can most camera stores pull the front
element off to clean it?

Thanks,
Greg

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Brian Baird - 27 Feb 2005 02:39 GMT

> Quick question. I haven't noticed it in my photos but there is a piece of
> lint/dust on the inside of the front element of my 70-200 lens. It's close
> to the middle of the element. Will I not notice it because of it being
> heavily blurred? If it is a problem can most camera stores pull the front
> element off to clean it?

If it's on the front element, you probably won't notice it unless you're
shooting a patch of uniform color. Even then, because of the focus
point, it will probably appear as a faint smudge over a fairly sizable
area.

I wouldn't lose sleep over it, but if you do notice it popping up in
photos, I'm sure your local Canon dealer will know what to do.

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Alan Browne - 28 Feb 2005 14:59 GMT

Try to bring it into focus in the viewfinder against a light and dark
background... not even a hint of it, right? Ignore it. Lenses, even internal
zoom lenses breath and little bits of dust are always moving around.

Cheers,
Alan

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