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Re: [OM] Fwd: Darkside anyone?

Subject: Re: [OM] Fwd: Darkside anyone?
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Sun, 09 May 2010 16:29:27 -0400
And I seriously doubt that what is on there will be removed by 
ultrasonic shaking.  Perhaps those with integrated dust removal systems 
aren't used to critically testing their sensors at very small apertures.

Chuck Norcutt

Tom Fenwick wrote:
> Taken in the spirit it's intended, but I was actually trying to show that
> there's no particular dust problem with the 5D.
> 
> All my sensors show that much dirt in that kind of test, and virtually none
> in practical use!  And that particular one has had a lot of such use.
> 
> Tom
> 
> On 9 May 2010 17:54, Chris Barker  wrote:
> 
>> This looks like a good way to dissuade someone from buying a camera without
>> an integral sensor cleaning system ... :-)
>>
>> Chris
>>
>> On 9 May 2010, at 17:46, Chuck Norcutt wrote:
>>
>>> Not too bad.  I'd guess that what's visible there at f/16 would not be
>>> visible at f/11.  I have a great deal of difficulty getting the 5D
>>> sensor squeaky clean at f/16 or higher without resorting to cleaning
>>> solutions so I generally don't bother.  I just use a brush.  Diffraction
>>> starts to intrude beyond f/11 so if it looks good at f/11 that's usually
>>> good enough for me.  I just avoid f/16.
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