Sequator users - has anyone saw this kind of pattern formed after stacking?

awscreo · 07-23-2018, 01:49 PM

Curious if maybe I'm missing some sort of option to fix it? I noticed it in few of my stacked images, especially in this one.
Has anyone else noticed this, or knows how to fix it? Dunno if it's clearly visible, it looks like a "net" pattern, clearly caused by stacking because it's not there in the single raw file.

Thanks!

Attached Images

photoptimist · 07-24-2018, 07:27 AM

This type of pattern can happen with resampling of images that have granular/speckled details with a subsequent adjustment of the tone curves. In some parts of the image, the pixels in the stack are nicely aligned and the details stay bright and sharp. In other parts of the image, the pixels in the stack are offset, get resampled, and are smoothed and dimmed.

You might try stacking a subset of the images to see if that helps or do any tone curve adjusts BEFORE stacking.

awscreo · 07-24-2018, 07:43 AM

Originally posted by photoptimist

This type of pattern can happen with resampling of images that have granular/speckled details with a subsequent adjustment of the tone curves. In some parts of the image, the pixels in the stack are nicely aligned and the details stay bright and sharp. In other parts of the image, the pixels in the stack are offset, get resampled, and are smoothed and dimmed.

You might try stacking a subset of the images to see if that helps or do any tone curve adjusts BEFORE stacking.

So I need to process the images before stacking them to avoid this pattern?

07-23-2018, 01:49 PM	#1
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722	Sequator users - has anyone saw this kind of pattern formed after stacking? Curious if maybe I'm missing some sort of option to fix it? I noticed it in few of my stacked images, especially in this one. Has anyone else noticed this, or knows how to fix it? Dunno if it's clearly visible, it looks like a "net" pattern, clearly caused by stacking because it's not there in the single raw file. Thanks! Attached Images

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Moire pattern in Astrotraced image after export in LR	aitrus3	Troubleshooting and Beginner Help	10	08-16-2016 06:10 AM
Nature A well formed Bud...........	eaglem	Post Your Photos!	16	02-15-2016 12:20 AM
Saw 3 Pentax users in One spot! (Disney, Magic Kingdom FL)	CEWren	Pentax DSLR Discussion	16	09-09-2012 06:43 PM
645D users: what kind of computer do you use?	Fontan	Pentax Medium Format	12	06-15-2011 01:42 AM
I saw "Fire(works) & I saw Rain" James Taylor Tanglewood (10 pictures)	vievetrick	Post Your Photos!	8	07-06-2008 09:49 PM

07-24-2018, 07:27 AM	#2
photoptimist Pentaxian Join Date: Jul 2016 Photos: Albums Posts: 5,126	This type of pattern can happen with resampling of images that have granular/speckled details with a subsequent adjustment of the tone curves. In some parts of the image, the pixels in the stack are nicely aligned and the details stay bright and sharp. In other parts of the image, the pixels in the stack are offset, get resampled, and are smoothed and dimmed. You might try stacking a subset of the images to see if that helps or do any tone curve adjusts BEFORE stacking.

07-24-2018, 07:43 AM	#3
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722 Original Poster	Originally posted by photoptimist This type of pattern can happen with resampling of images that have granular/speckled details with a subsequent adjustment of the tone curves. In some parts of the image, the pixels in the stack are nicely aligned and the details stay bright and sharp. In other parts of the image, the pixels in the stack are offset, get resampled, and are smoothed and dimmed. You might try stacking a subset of the images to see if that helps or do any tone curve adjusts BEFORE stacking. So I need to process the images before stacking them to avoid this pattern?