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White outline around my masked layers

New Here ,
Sep 07, 2017

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I'm getting a fine white line around my masked layers when place against a background in a multi-layered file.  I'm using the quick selection tool then checking the Select and Mask box...doing some edge refinement and Outputting as New Layer with Layer Mask.  I'm then dragging this layer into my background.  That's when I see the fine white lines around the whole unselected image (top green figure is the image I started with- the masked portion is on the below black background photo with the fine white lines around the original border).

I don't believe this is actually part of the image...I only say this because I exported the layered image with the fine white lines to a high res JPEG file and opened it- no white lines appear.

They are more annoying than anything else.  If my technique is the issue any recommendations would be appreciated.  if there is a way to remove them- even better.

Thanks for all comments...

As Chuck said, viewing at 100% can determine if lines are really there. What might be happening is that those white lines are really there--but when you export a hires JPEG--however you are viewing it--it might not be showing you a super detailed representation of what is actually there (this can also be how your monitor is configured versus how Photoshop is configured. In addition to this, I also know that Select and Mask can fail at times to really clear up some detail depending on the type of selection you are performing. Its a wonderful way of selecting--but not always the cleanest.  To clean up your lines--just Select Your Layer Mask that was created and try to use black (RGB,0,0,0) brush to brush out the white lines. If this works--you'll have your answer--the lines were a product of a bad selection. Please report back and tell us if any of this worked! Happy to help you out further!

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White outline around my masked layers

New Here ,
Sep 07, 2017

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I'm getting a fine white line around my masked layers when place against a background in a multi-layered file.  I'm using the quick selection tool then checking the Select and Mask box...doing some edge refinement and Outputting as New Layer with Layer Mask.  I'm then dragging this layer into my background.  That's when I see the fine white lines around the whole unselected image (top green figure is the image I started with- the masked portion is on the below black background photo with the fine white lines around the original border).

I don't believe this is actually part of the image...I only say this because I exported the layered image with the fine white lines to a high res JPEG file and opened it- no white lines appear.

They are more annoying than anything else.  If my technique is the issue any recommendations would be appreciated.  if there is a way to remove them- even better.

Thanks for all comments...

As Chuck said, viewing at 100% can determine if lines are really there. What might be happening is that those white lines are really there--but when you export a hires JPEG--however you are viewing it--it might not be showing you a super detailed representation of what is actually there (this can also be how your monitor is configured versus how Photoshop is configured. In addition to this, I also know that Select and Mask can fail at times to really clear up some detail depending on the type of selection you are performing. Its a wonderful way of selecting--but not always the cleanest.  To clean up your lines--just Select Your Layer Mask that was created and try to use black (RGB,0,0,0) brush to brush out the white lines. If this works--you'll have your answer--the lines were a product of a bad selection. Please report back and tell us if any of this worked! Happy to help you out further!

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Sep 07, 2017 0
Adobe Community Professional ,
Sep 07, 2017

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Do you see this at 100%. You will often see artifacts if your image isn't at 100%.

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Sep 07, 2017 0
New Here ,
Sep 08, 2017

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Chuck- yes...I do see the lines at 100% as well as other magnifications- both zoomed in or out...so I guess the lines are there

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Sep 08, 2017 0
Engaged ,
Sep 07, 2017

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As Chuck said, viewing at 100% can determine if lines are really there. What might be happening is that those white lines are really there--but when you export a hires JPEG--however you are viewing it--it might not be showing you a super detailed representation of what is actually there (this can also be how your monitor is configured versus how Photoshop is configured. In addition to this, I also know that Select and Mask can fail at times to really clear up some detail depending on the type of selection you are performing. Its a wonderful way of selecting--but not always the cleanest.  To clean up your lines--just Select Your Layer Mask that was created and try to use black (RGB,0,0,0) brush to brush out the white lines. If this works--you'll have your answer--the lines were a product of a bad selection. Please report back and tell us if any of this worked! Happy to help you out further!

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Sep 07, 2017 0
New Here ,
Sep 08, 2017

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Kristian- thanks...this was helpful and confirmed what I stumbled across on my own...The lines were "real".  I used the brush tool to get rid of them and everything looks great.

Thank you and Chuck for responding...I've been using Lightroom for years and over that past year just diving into Photoshop.  I love it but it can be overwhelming- especially when you think you are doing something correctly but things aren't happening the way you thought they should!

This was my first time asking a question in this forum and it was very successful.  Thanks again.

Jim

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Sep 08, 2017 0
New Here ,
Oct 04, 2020

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Hi Kristian, I know this thread is old, but I actually just wanted to pick it back up as I'm experiencing the same issue. Brushing away the white exterior outline of the mask (which shows up in exported tiffs/jpgs etc) isn't really a good enough work around for me, so I just need to solve the problem at the source. What causes this white outline? Is it a bug or a setting that I can change in order to solve it? Even something as basic as getting the mask to expand on the outward sides by 1px automatically would do it. Just the "paint it away" solution is a frustrating waste of time for something that shouldn't be there in the first place. Thanks a lot, Josh

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Oct 04, 2020 0