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alanS
Dr Dust


Reged: 30/09/2005
Posts: 3650
Loc: Up North, England.
Re: Anti Dust - any good?
      02/06/2008 13:59

I took a few shots at the weekend and only one shot (at f22) showed contamination. The place where it was almost meat that removing it could have spoilt the shot but I managed.

I used to think that my 20D suffered a lot of contamination and it certainly shows up worse when using hyper focal focusing or doing a specific check for contamination but more recently I've suffered less contamination. I assume that this is possible because the mechanism is getting bedded in and less bits are coming off the moving parts?

I'm disappointed that anti dust systems (at least some of them) are not more effective. I wonder how much further forward the filter would need to be to render contamination out of focus? or if a glass plate (like the Sigma, is it?) could be an option. It'd have to be assembled and sealed well in the factory but surely more effective measures could be found? I don't know if there's room for moving the filter forward or fitting a glass plate with EF-S cameras.

--------------------
Alan's defence lawyer claimed that "Booze played no part in his typo's."

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Entire topic
Subject Posted by Posted on
* Anti Dust - any good? daft_bikerModerator 30/05/2008 16:05
. * * Re: Anti Dust - any good? Terrywoodenpic   09/06/2008 20:38
. * * Re: Anti Dust - any good? Bone_Idle   25/06/2008 13:06
. * * Re: Anti Dust - any good? bench_ubbster   30/05/2008 17:15
. * * Re: Anti Dust - any good? daft_bikerModerator   30/05/2008 18:27
. * * Re: Anti Dust - any good? bench_ubbster   31/05/2008 10:32
. * * Re: Anti Dust - any good? daft_bikerModerator   02/06/2008 12:27
. * * Re: Anti Dust - any good? Malcolm_Stewart   02/06/2008 13:23
. * * Re: Anti Dust - any good? alanS   02/06/2008 13:59
. * * Re: Anti Dust - any good? beejaybee   04/06/2008 08:51
. * * Re: Anti Dust - any good? daft_bikerModerator   02/06/2008 15:16
. * * Re: Anti Dust - any good? Malcolm_Stewart   04/06/2008 08:22
. * * Re: Anti Dust - any good? daft_bikerModerator   04/06/2008 09:31
. * * Re: Anti Dust - any good? BigAl999   04/06/2008 19:15
. * * Re: Anti Dust - any good? beejaybee   04/06/2008 19:40
. * * Re: Anti Dust - any good? Bone_Idle   05/06/2008 15:53
. * * Re: Anti Dust - any good? beejaybee   06/06/2008 08:12
. * * Re: Anti Dust - any good? El Sid   05/06/2008 17:08
. * * Re: Anti Dust - any good? alanS   05/06/2008 16:05
. * * Re: Anti Dust - any good? Norman   04/06/2008 19:32
. * * Re: Anti Dust - any good? beejaybee   04/06/2008 08:37
. * * Re: Anti Dust - any good? Benchmark   03/06/2008 23:38
. * * Re: Anti Dust - any good? daft_bikerModerator   04/06/2008 08:11
. * * Re: Anti Dust - any good? beejaybee   30/05/2008 18:40
. * * Re: Anti Dust - any good? sjaszczak   30/05/2008 16:58

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