Luminous Landscape Forum

Raw & Post Processing, Printing => Digital Image Processing => Topic started by: choen on December 08, 2007, 11:22:54 pm

Title: Fixing moire in fabric - how?
Post by: choen on December 08, 2007, 11:22:54 pm
I recently moved to a h3d-22 and found that every shot i took would have some sort of moire in fabrics (I shoot a lot of portraits, fashion and interiors). I cannot find any tab or feature in flexcolor that allows me to reduce the effect.

How do I go about fixing this?
Title: Fixing moire in fabric - how?
Post by: Wolfman on December 09, 2007, 01:49:34 am
Quote
I recently moved to a h3d-22 and found that every shot i took would have some sort of moire in fabrics (I shoot a lot of portraits, fashion and interiors). I cannot find any tab or feature in flexcolor that allows me to reduce the effect.

How do I go about fixing this?
[{POST_SNAPBACK}][/a] (http://index.php?act=findpost&pid=159376\")


Go to : [a href=\"http://www.russellbrown.com/tips_tech.html]http://www.russellbrown.com/tips_tech.html[/url] and scroll down near the bottom and see
"Moire Go Away" That method should help a lot.
Title: Fixing moire in fabric - how?
Post by: choen on December 09, 2007, 06:25:59 am
Quote
Go to : http://www.russellbrown.com/tips_tech.html (http://www.russellbrown.com/tips_tech.html) and scroll down near the bottom and see
"Moire Go Away" That method should help a lot.
[a href=\"index.php?act=findpost&pid=159398\"][{POST_SNAPBACK}][/a]


Thanks Wolfman.

I was hoping that it was possible to fix it in-camera or at least at raw level before saving as tiff or jpeg. Looks like I've gotta do it like russell brown or through the LAB mode eh.
Title: Fixing moire in fabric - how?
Post by: Graeme Nattress on December 09, 2007, 07:27:30 am
There's really nothing that can be done other than:

stop the lens down so much that you're diffraction limiting,
use really poor lenses that don't have enough resolution to cause moiré,
or to buy a camera that has an optical low pass filter fitted.

Graeme
Title: Fixing moire in fabric - how?
Post by: David WM on December 09, 2007, 08:02:31 am
I have been having similar issues with an H1 with an eMotion 22 back.  I think what you are looking for may be the Caprock anti moire filters  ( see http://www.caprockdev.com/antimoire.htm (http://www.caprockdev.com/antimoire.htm) ). I have been meaning to try one, but as yet I havent.  I would be interested to hear if anyone has tried them.

David
Quote
I was hoping that it was possible to fix it in-camera or at least at raw level before saving as tiff or jpeg. Looks like I've gotta do it like russell brown or through the LAB mode eh.[a href=\"index.php?act=findpost&pid=159418\"][{POST_SNAPBACK}][/a]
Title: Fixing moire in fabric - how?
Post by: sojournerphoto on December 10, 2007, 05:17:15 am
Quote
There's really nothing that can be done other than:

stop the lens down so much that you're diffraction limiting,
use really poor lenses that don't have enough resolution to cause moiré,
or to buy a camera that has an optical low pass filter fitted.

Graeme
[a href=\"index.php?act=findpost&pid=159425\"][{POST_SNAPBACK}][/a]


I have a sense that you enjoyed that Graeme!

Mike
Title: Fixing moire in fabric - how?
Post by: stewarthemley on December 10, 2007, 06:03:27 am
Quote
I recently moved to a h3d-22 and found that every shot i took would have some sort of moire in fabrics (I shoot a lot of portraits, fashion and interiors). I cannot find any tab or feature in flexcolor that allows me to reduce the effect.

How do I go about fixing this?
[a href=\"index.php?act=findpost&pid=159376\"][{POST_SNAPBACK}][/a]

The new Phocus software should be out any day now and it has an anti-moire thingy which apparently is quite effective. It will be a free download for your Hassy.
Title: Fixing moire in fabric - how?
Post by: Graeme Nattress on December 10, 2007, 08:44:45 am
Sure, there's some software where you can define areas and reduce chroma moire, but you're basically just desaturating / blurring it out of existance. The only really effective, non-manual way to fix moire is to never let it into the system in the first place....
Title: Fixing moire in fabric - how?
Post by: stewarthemley on December 10, 2007, 10:39:16 am
Quote
Sure, there's some software where you can define areas and reduce chroma moire, but you're basically just desaturating / blurring it out of existance. The only really effective, non-manual way to fix moire is to never let it into the system in the first place....
[a href=\"index.php?act=findpost&pid=159662\"][{POST_SNAPBACK}][/a]

As soon as my copy of Phocus arrives and is working I'll let you know how effective it is (IMO) at removing moire. The sales people I have talked to (naturally they're biased) claim its "quite a leap forward". If it's a mere step I'll be grateful.
Title: Fixing moire in fabric - how?
Post by: Graeme Nattress on December 10, 2007, 10:45:46 am
There's scant detail of Phocus on their site. Be interesting to see how it works in real life, so if you can post up some images, that'd be super!

Graeme
Title: Fixing moire in fabric - how?
Post by: stewarthemley on December 10, 2007, 11:56:44 am
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There's scant detail of Phocus on their site. Be interesting to see how it works in real life, so if you can post up some images, that'd be super!
[a href=\"index.php?act=findpost&pid=159687\"][{POST_SNAPBACK}][/a]

Happy to. Mind you, it will probably be after Xmas. (During Xmas I will attempt to consume some "liquid anti-moire" - beats Phocus or any other wonder cure  at making it all less noticeable...)
Title: Fixing moire in fabric - how?
Post by: nemophoto on December 10, 2007, 11:26:35 pm
The best moire fixer I've found is actually the pluggin that comes with Capture One. You might see if you have a friend with the software, if you don't own it. The pluggin is almost worth doing the Capture One trial (not the beta 4 version).