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Posted

 

I stumbled upon an odd quality problem. Since affinity constantly freezing on me, I have to save the project frequently, since sometimes it doesn't offer the backup after restarting it. After doing a few masks and working with an actual image and not its live projection I have a significant quality drop (I am editing 360 pictures, so sometimes I have to do masks inside the live projection, but the example below is a regular picture edit).
I am almost sure it is because of the number of saves I have during my work, but I was saving a project and not resaving the image itself. The format I was working with was TIFF
 
In a photo below is the quality I started with (zoomed) on the left and the quality I ended up with after all the edits are done to the right.
I would appreciate any advice on how to avoid such drop in the future. 

image.png.9c79e4641be9fde44ae145f9aa400f4c.png

Posted

Hi and welcome to the forum.

A quality drop is possible, depending on the actual edit steps. 
You can normally avoid most quality issues by adjusting the workflow, e.g. by using live adjustments and live filters.

All edits directly on a layer (filters from Menu, merge down, repeatedly enter/leave live projection) may degrade quality, depending additional factors.

Could you share what exactly you did? 

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Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.

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Posted
1 minute ago, NotMyFault said:


You can normally avoid most quality issues by adjusting the workflow, e.g. by using live adjustments and live filters.

All edits directly on a layer (filters from Menu, merge down, repeatedly enter/leave live projection) may degrade quality, depending additional factors.

 

Hey, thank you for the welcome!

I am not familiar with live adjustments and not sure how they would work in case of live projections, but I will research it. I usually use a marquee tool to create a mask and then merge it down. Sometimes I have to use multiple masks, so if merging down lowers the quality, that's my problem. I just don't know how to avoid it. 

Posted
6 minutes ago, NotMyFault said:

repeatedly enter/leave live projection)

I just realized, that I do this a lot too. Leaving and restarting the live projection. But I had the feeling that when I edit things inside the projection it lovers the quality. Now I really don't know what the west workflow for live projections would be. 

 

Posted

When using merge down, it is important that all layers have absolute identical DPI, and the positions are starting at whole integers. If not, the result gets blurry.

In most cases you can use merge visible as replacement, or do one single merge instead of multiple / repeated merge.

 

Mac mini M1 A2348 | Windows 10 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5

iPad Air Gen 5 (2022) A2589

Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.

My posts focus on technical aspects and leave out most of social grease like „maybe“, „in my opinion“, „I might be wrong“ etc. just add copy/paste all these softeners from this signature to make reading more comfortable for you. Otherwise I’m a fine person which respects you and everyone and wants to be respected.

 

Posted
4 minutes ago, Mad Kraken said:

I just realized, that I do this a lot too. Leaving and restarting the live projection. But I had the feeling that when I edit things inside the projection it lovers the quality. Now I really don't know what the west workflow for live projections would be. 

 

Can you explain what types of edits you are doing? We might identify alternative methods reducing or eliminating the quality loss. 
Live projection resamples image data, this is unavoidably lossy.  
 

Mac mini M1 A2348 | Windows 10 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5

iPad Air Gen 5 (2022) A2589

Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.

My posts focus on technical aspects and leave out most of social grease like „maybe“, „in my opinion“, „I might be wrong“ etc. just add copy/paste all these softeners from this signature to make reading more comfortable for you. Otherwise I’m a fine person which respects you and everyone and wants to be respected.

 

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