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Help with anti-alias please
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Oct 5, 2022 07:58:21   #
Delderby Loc: Derby UK
 
I am a M4/3 photographer (fourteen years). Recently I swapped my Panasonic G5 for a Panasonic G80.
Both are 16mpx cameras. However - the G5 had an anti-alias filter - the G80 does not. One reason for my swap was to maximise on sharp capability. However - I now have problems with alias in some of my images - and cannot seem to get rid using several different editing apps, including Affinity and Photo Plus (forerunner to Affinity). I would be grateful for any advice.
Regards to all Hogs
DelFab.

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Oct 5, 2022 08:41:25   #
dmeyer Loc: Marion, NC
 
Delderby wrote:
I am a M4/3 photographer (fourteen years). Recently I swapped my Panasonic G5 for a Panasonic G80.
Both are 16mpx cameras. However - the G5 had an anti-alias filter - the G80 does not. One reason for my swap was to maximise on sharp capability. However - I now have problems with alias in some of my images - and cannot seem to get rid using several different editing apps, including Affinity and Photo Plus (forerunner to Affinity). I would be grateful for any advice.
Regards to all Hogs
DelFab.
I am a M4/3 photographer (fourteen years). Recentl... (show quote)


Not sure if Lightroom has the same features as the software you are using, but I got myself into a pickle when I accidentally switched my image capture from RAW to JPEP while shooting at dusk. When I went to edit for the dynamic range, I had terrible pixelation/noise in one area of the sky. Noise reduction had no effect on it. I stumbled onto a cure when using the adjustment brush by applying moire reduction. Let me know if this is a workaround for you.

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Oct 5, 2022 09:11:24   #
gwilliams6
 
dmeyer wrote:
Not sure if Lightroom has the same features as the software you are using, but I got myself into a pickle when I accidentally switched my image capture from RAW to JPEP while shooting at dusk. When I went to edit for the dynamic range, I had terrible pixelation/noise in one area of the sky. Noise reduction had no effect on it. I stumbled onto a cure when using the adjustment brush by applying moire reduction. Let me know if this is a workaround for you.


I agree moire reduction can often help.

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Oct 5, 2022 17:01:33   #
Delderby Loc: Derby UK
 
dmeyer wrote:
Not sure if Lightroom has the same features as the software you are using, but I got myself into a pickle when I accidentally switched my image capture from RAW to JPEP while shooting at dusk. When I went to edit for the dynamic range, I had terrible pixelation/noise in one area of the sky. Noise reduction had no effect on it. I stumbled onto a cure when using the adjustment brush by applying moire reduction. Let me know if this is a workaround for you.


Thanks for reply. I've been searching Affinity help, but cannot find anything on Moire (or anti alias). I'm looking more closely at filters in the hope of finding something more helpful. Thanks again.

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Oct 6, 2022 07:04:09   #
cedymock Loc: Irmo, South Carolina
 
Delderby wrote:
I am a M4/3 photographer (fourteen years). Recently I swapped my Panasonic G5 for a Panasonic G80.
Both are 16mpx cameras. However - the G5 had an anti-alias filter - the G80 does not. One reason for my swap was to maximise on sharp capability. However - I now have problems with alias in some of my images - and cannot seem to get rid using several different editing apps, including Affinity and Photo Plus (forerunner to Affinity). I would be grateful for any advice.
Regards to all Hogs
DelFab.
I am a M4/3 photographer (fourteen years). Recentl... (show quote)


You said "in some of my images" could it be different lenes or same lens? I do not use or have Panasonic just trying to help.

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Oct 6, 2022 07:55:48   #
Delderby Loc: Derby UK
 
cedymock wrote:
You said "in some of my images" could it be different lenes or same lens? I do not use or have Panasonic just trying to help.


Thank you for your interest in my prob.
Not all images will be affected by moire - depending on content. Lenses seem to only affect the situation because it is likely that different lenses will have different settings - smaller apertures seem to work best, but that means slow shutter speeds - not M4/3 best forte. Certainly moire can ruin a picture (especially architecture).
I have always fought away from signing up for Lightroom - but it seems to be the only app that has a moire reducing brush. So - I will probably bight the bullet.

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Oct 6, 2022 08:39:06   #
r1ch Loc: Colorado
 
JASC Paint Shop Pro 7 has the remove noise option then Moire remover. You can download it, I believe it is free and although already scanned for viruses. I always use virustotal.com to check before/after I download it. google search oldversion.com has a copy.

Corel bought out JASC so any version of Corel PaintShop Pro after 7 has the Moire remover (I checked several old versions). If you have been shooting for so long, possibly you tried out old versions of Corel PSP?

I hate Adobe subscription model, software is a product not a service. Corel PSP 2023 is $59 and has a 30 day trial to test it out and make sure it has the moire remove tool and it works the way you want it to. I would buy it before I bought anything Adobe.

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Oct 6, 2022 09:10:57   #
ecobin Loc: Paoli, PA
 
Eliminating Moire can be easy or near impossible depending on the situation. Affinity Photo doesn't currently have a Moire adjustment filter.
First, in the Develop module enable lens correction and key in your lens if not automatically found - this may help a bit but won't resolve Moire.
The best method is to use the frequency separation filter with median blur. Increase the blur until color shows up on the high frequency layer and then back off so that no colors remain. Then on the low frequency layer, remove unwanted colors by sampling and painting. On the high frequency layer, use the clone brush to eliminate Moire patterns. It can be a painful process.

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Oct 6, 2022 09:27:01   #
JD750 Loc: SoCal
 
Delderby wrote:
I am a M4/3 photographer (fourteen years). Recently I swapped my Panasonic G5 for a Panasonic G80.
Both are 16mpx cameras. However - the G5 had an anti-alias filter - the G80 does not. One reason for my swap was to maximise on sharp capability. However - I now have problems with alias in some of my images - and cannot seem to get rid using several different editing apps, including Affinity and Photo Plus (forerunner to Affinity). I would be grateful for any advice.
Regards to all Hogs
DelFab.
I am a M4/3 photographer (fourteen years). Recentl... (show quote)

What type of images are you seeing the problem with? What problem are you seeing? Can you describe it?

Are you using full resolution?

Unfortunately you can’t de-Alias the data after it’s captured.

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Oct 6, 2022 10:10:23   #
Delderby Loc: Derby UK
 
r1ch wrote:
JASC Paint Shop Pro 7 has the remove noise option then Moire remover. You can download it, I believe it is free and although already scanned for viruses. I always use virustotal.com to check before/after I download it. google search oldversion.com has a copy.

Corel bought out JASC so any version of Corel PaintShop Pro after 7 has the Moire remover (I checked several old versions). If you have been shooting for so long, possibly you tried out old versions of Corel PSP?

I hate Adobe subscription model, software is a product not a service. Corel PSP 2023 is $59 and has a 30 day trial to test it out and make sure it has the moire remove tool and it works the way you want it to. I would buy it before I bought anything Adobe.
JASC Paint Shop Pro 7 has the remove noise option ... (show quote)


Thanks VM for this info.

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Oct 6, 2022 10:11:43   #
Delderby Loc: Derby UK
 
ecobin wrote:
Eliminating Moire can be easy or near impossible depending on the situation. Affinity Photo doesn't currently have a Moire adjustment filter.
First, in the Develop module enable lens correction and key in your lens if not automatically found - this may help a bit but won't resolve Moire.
The best method is to use the frequency separation filter with median blur. Increase the blur until color shows up on the high frequency layer and then back off so that no colors remain. Then on the low frequency layer, remove unwanted colors by sampling and painting. On the high frequency layer, use the clone brush to eliminate Moire patterns. It can be a painful process.
Eliminating Moire can be easy or near impossible d... (show quote)


Thanks VM for info

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Oct 6, 2022 10:19:49   #
Delderby Loc: Derby UK
 
JD750 wrote:
What type of images are you seeing the problem with? What problem are you seeing? Can you describe it?

Are you using full resolution?

Unfortunately you can’t de-Alias the data after it’s captured.


Thanks for reply.
Presently photographing static caravan holiday homes. Edge of roof and other corner edges show moire. I have today downloaded 7 day free LR trial. The Corel alternative may suit me better.

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Oct 6, 2022 10:22:09   #
Strodav Loc: Houston, Tx
 
Moire happens when the spatial frequency of something in your scene (lines per inch) is higher than the sampling frequency of your camera and lens. The best thing to do is avoid it in the first place. If you have a scene with things that tend to moire, like fabrics, especially corduroy or tight knit sweaters, there's a couple of things you can do. Change the distance, which changes the number of sensor elements on the problem. Moving in puts more sensor elements on the subject, increasing resolution, i.e, a higher sampling frequency. Moving out puts less sensor elements on the subject, reducing resolution, or softening. You can accomplish the same thing with differenct focal length lenses keeping the distance the same. Another option is a soft focus filter, which we use to use a lot more with film. Others have posted about PP tools, but they can be hit or miss depending on the image. I have had some luck masking the problem area and applying softening filters just to the masked area.

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Oct 6, 2022 10:48:19   #
User ID
 
Delderby wrote:
Thanks for reply.
Presently photographing static caravan holiday homes. Edge of roof and other corner edges show moire. I have today downloaded 7 day free LR trial. The Corel alternative may suit me better.

That is NOT moire. Thaz just your pixels. It can occur nearly the same in photos from cameras that DO have moire filters.

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Oct 6, 2022 10:51:27   #
Delderby Loc: Derby UK
 
Strodav wrote:
Moire happens when the spatial frequency of something in your scene (lines per inch) is higher than the sampling frequency of your camera and lens. The best thing to do is avoid it in the first place. If you have a scene with things that tend to moire, like fabrics, especially corduroy or tight knit sweaters, there's a couple of things you can do. Change the distance, which changes the number of sensor elements on the problem. Moving in puts more sensor elements on the subject, increasing resolution, i.e, a higher sampling frequency. Moving out puts less sensor elements on the subject, reducing resolution, or softening. You can accomplish the same thing with differenct focal length lenses keeping the distance the same. Another option is a soft focus filter, which we use to use a lot more with film. Others have posted about PP tools, but they can be hit or miss depending on the image. I have had some luck masking the problem area and applying softening filters just to the masked area.
Moire happens when the spatial frequency of someth... (show quote)


Thanks for explanation and advice

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