Is this Moiré?

Discussions, questions, comments and suggestions regarding Capture One PRO, Capture One PRO For Sony / Fujifilm, Capture One DB and Capture One Express For Sony / For Fujifilm 12.x

Is this Moiré?

Postby NN635920435860834194UL » Tue Dec 03, 2019 1:29 am

Hello,
I am getting these weird "pixel-patterns" inside this fence (and also elsewhere in the image) which seem to be software related, as I do not get them when processing this image in Lightroom or CameraRAW Standalone.

I have already tried the Moiré sliders in the Details Tab without luck. To be precise: moving the Moiré sliders do not affect these patterns at all.

What is this and how do I get rid of it?

Shot with a Canon 5D Mark II + Canon TS-E 24mm @ f/11

Kind regards,
Andi

full image: https://i.ibb.co/MRgjTfQ/what-is-this.jpg

Image
NN635920435860834194UL
 
Posts: 3
Joined: Fri Feb 26, 2016 1:33 am

Re: Is this Moiré?

Postby NN635680879799322049UL » Tue Dec 03, 2019 3:53 am

Strange, this is a view of the image at 100% magnification. Otherwise, it would likely be an artifact of fitting it to the resolution of your monitor.You seem to have a good bit of color noise in the image, as well, and I am not sure how this might affect moire. I would expect to see some reduction of moire, however. Can you post the before and after adjusting moire rather than C1 verse Lightroom (on the web link)?

Jerry C
NN635680879799322049UL
 
Posts: 211
Joined: Sun May 24, 2015 7:12 pm

Re: Is this Moiré?

Postby NN635920435860834194UL » Tue Dec 03, 2019 9:22 am

Thank you for your input, Jerry.
These screenshots were taken at 200%. It is also visible at 100% and on three different monitors.

I was able to track it down: there was no lens profile assigned to the shot. However, the Canon TS-E 24mm does not have a lens profile in C1 (nor does it have one in Lightroom). As far as I know this is due to the fact, that - in regards to the shifting - it is impossible for the profile to know, where the center of the lens is/was when the shot was taken.

So the default "Generic" lens profile was assigned to this shot, which does exactly nothing in regards to my problem. I tried a few canon lenses profiles and the one for Canon EF 24-70mm f/2.8L USM + selecting "Chromatic Aberration" does remove these artifacts. I also tried the "Analyze" function on the Generic profile without luck.

I have never had problems with this camera + lens combination before using LR and/or CameraRAW Standalone (I am in the process of making the switch to C1). These programs also do NOT have a profile for this lens. So I would like to know the following:

Is there another way to get this to work except from assigning a wrong lens in the profile selection?
Also I would like to know what this is called - is this Moiré?

Kind regards,
Andi

EDIT
Following exact these steps I was able to get rid of these artifacts:


    1. assign a wrong lens profile which does remove these artifacts (had to try a few profiles and went with one that included my focal length of 24mm). Selecting a lens profile automatically activates the "Chromatic Aberration" correction.
    2. switch the lens profile back to "Generic" which automatically removes the CA correction
    3. tick the CA correction back on (without changing the lens profile)


Note: Just ticking the CA correction in the beginning (when "Generic" is selected) without this funny lens profile switching progress does not affect anything.
This makes no sense to me - so I guess it is a software bug?

PS: as requested by Jerry I made a comparison before and after adjusting Moiré @ 100% magnification. No lens profile assigned (which means, that "Generic" is selected). Link: https://i.ibb.co/12gLx8T/with-without-moire.jpg

Image
NN635920435860834194UL
 
Posts: 3
Joined: Fri Feb 26, 2016 1:33 am

Re: Is this Moiré?

Postby SFA » Tue Dec 03, 2019 2:16 pm

If you have Hardware acceleration active (which would be the default state), have you tried turning it Off ("None" on the Preferences file option) tosee what happens?
SFA
 
Posts: 7079
Joined: Tue Dec 20, 2011 9:32 pm

Re: Is this Moiré?

Postby NN635680879799322049UL » Wed Dec 04, 2019 2:54 am

It looks like you need the correct lens profile to correct moiré optimally, which I did not think of. Best to file a case with tech support to definitively find out how to optimize when you don't have a lens with a profile.

Capture One's support for software only (for those without a Phase One camera) has changed. To request support and ask other questions, you now click on "Submit a request" in the upper right hand corner. It is easy to miss.

Jerry C
NN635680879799322049UL
 
Posts: 211
Joined: Sun May 24, 2015 7:12 pm

Re: Is this Moiré?

Postby NN635920435860834194UL » Wed Dec 04, 2019 5:31 pm

@SFA: turning off Hardware acceleration does not affect my problem, I have tried this.

@Jerry C: I will first update to C1 20 and then see what happens. If this problem remains I will definitely get in touch with Capture One's support team. The tricky part is: assigning a profile from another lens does not only ensure that I get rid of the Moiré but also applies the distortion correction from that lense which results in a distorted "not distorted" image.

Thank you for taking the time to reply!
NN635920435860834194UL
 
Posts: 3
Joined: Fri Feb 26, 2016 1:33 am


Return to Capture One 12.x Software



Who is online

Users browsing this forum: IanL and 2 guests