Even the dust removal in Canyon may not be that effective but then when I
clean the sensor I only touch the vibration membrane not the image sensor,
it will make me feel better at least. It is digital age, I will not compare
how bad the film and scanning was, it was the thing in the pass, I want
something better today.
I really don't like viewfinder dust, I am even willing to disassembly the OM
bodies to clean them in the pass (as dust get in from eyepiece). But if the
dust is only on the focusing screen then it is ok to me, it is easy to
clean, I'm not sure if this is the case for most 5Ds.
C.H.Ling
----- Original Message -----
From: "Moose" <olymoose@xxxxxxxxx>
> C.H.Ling wrote:
>> I still prefer the new one unless it is well over $2K, the dust on
>> viewfinder and CCD is very annoying. I have seen quite some selling ads
>> mentioned there are some dust inside the viewfinder of their 5D.
>>
> Two quite different things to me.
>
> Dust on the sensor affects the image, viewfinder dust doesn't.
>
> I wouldn't make a purchase decision based on the Canyon dust removal. It
> doesn't seem to be anywhere near as effective as Oly's system, unless
> you know of a newer and/or better test than this one.
> <http://pixinfo.com/en/articles/ccd-dust-removal/> They didn't test the
> mapping feature, though.
>
> On the other hand, I haven't found dust on the sensor of my 5D to be a
> big deal. I finally got a fair amount on there on a recent trip. Even
> so, it was only visible in a minority of the shots. Only shots with
> light colored, relatively blank spaces that are taken at smaller
> apertures show it. When I got home, a few puffs of air cleaned out all
> but one significant bit. I could see it on the sensor and blew it off too.
>
> There are still, always, I think, some small, weak specks visible at
> 100% on blue sky at smallest aperture, but they have yet to be visible
> in an actual shot I've taken.
>
> And then it only takes moments to clean it up in PS. It's nothing like
> the pain of dust on film scans.Would I like a system as effective as
> Oly's on the 5D? Sure. But it just not a big issue for me.
>
> Viewfinder dust doesn't affect the image, so being bothered by it is
> purely a personal thing. I'm sure there are people who can't stand it. I
> see some when I look for it. I don't see it when I'm using the
> viewfinder to take pictures. First time I cleaned the sensor, I also
> cleaned the viewfinder. The second time, I didn't bother.
>
> It's a snap to clean. It can only be visible when on the matte surface
> of the screen, otherwise, it's not in focus and invisible. Pull out the
> interchangeable screen, blow off (or maybe use John's goose feather
> technique.) and put it back in. Would that sensor cleaning were so easy.
>
> I suspect that a lot of viewfinder dust is a result of vigorous mirror
> box blowing pushing dust up there.
>
> Moose
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