Bug in MAC OS develop Module

[spiderpod7d]

Hi Guys

I had this as part of a suggestion post and realized it needed to be in the bugs forum so here it is

I shoot a lot of HDR and focus shifting frames with my Nikon Z7II and 24-200 Lens. In certain instances (24 -50mm) range I sometimes get severe blue fringing that can't be removed with chromatic aberration or fringing adjustments. I have to say there has been a vast improvement in release 1.10.5, but I have included a sample frame of the blue fringing that can't be removed on the right hand balconies and when the brightness and contrast is adjusted it gets worse and is visible at 100%.

I use AP on a Mac Pro 2009 running open core 4.3 and the version of AP is 1.10.5 recent release. Again I have to say that the software has improved Chromatic aberrations and defringe functions  greatly, but I wanted to know if we eliminate that last extreme case shown in the attachment?

I don't know if this also exists on Windows platform

Thanks,

 

1270753100_TestImage.afphoto

[NathanC]

Hi @spiderpod7d,

I'm following this up with the team internally, could you provide us with the source RAW files prior to the HDR merge? Below is a private dropbox link if you wish to upload them there.

https://www.dropbox.com/request/dkKstol4vm6WDEYRy5bk

 

[spiderpod7d]

Hi NathanC

I have uploaded the images into the dropbox link provided.

Thanks for looking into this

[spiderpod7d]

On 3/25/2022 at 11:35 AM, NathanC said:

Hi @spiderpod7d,

I'm following this up with the team internally, could you provide us with the source RAW files prior to the HDR merge? Below is a private dropbox link if you wish to upload them there.

https://www.dropbox.com/request/dkKstol4vm6WDEYRy5bk

 

 

[spiderpod7d]

Hi Nathan

Is there any news on whether the developers have fixed the above issue.

I am considering switching to darktable as it does fix the issue as does LR.

I would love to stick with affinity as I have become quite familiar with the app but the inability to correct for chromatic aberrations is an issue as I print big.

Thanks for any update

[spiderpod7d]

Hi Nathan

Have you got any feedback from the developers on how I might be able to fix my problem?

Thanks,

 

[NathanC]

Hi @spiderpod7d,

Apologies on the late reply. I raised this with one of our product experts who advised on the below:

 

The fringing is so wide that Photo's defringing doesn't really touch it. I can reduce the colour intensity of the fringing, but it's covering too much of the balcony area to be effectively reduced.

I did have better luck after tone mapping the HDR merge document—using Filters>Colours>Defringe with a high tolerance and low threshold worked reasonably well. Then I would probably just use an HSL adjustment, selectively desaturate the blues and just mask it to the right hand area of the image.

Unfortunately, the lens (a 24-200 superzoom) is probably going to be quite notorious for bad CA and fringing—just look at the apartment balconies on the middle building. 

I think it needs to be tone mapped first. Defringe doesn't work on out of bound values.

[spiderpod7d]

Hi Nathan

Too bad as Darktable and LR deals with it all nicely.

I am asking Nikon about and if they ( the Manufacturer) can deal with it, then I will look into getting rid of the lens or switch to dark table as the develop module for AP

Thanks for trying Nathan