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Thin Black Outline!

Engaged ,
Apr 17, 2023 Apr 17, 2023

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Why Ai adds a thin black outline to the shape (with a solid fill colour) after adding a gradient fill (Appearance Panel) to it!

I have a shape with a fill (solid) colour (img 1), adding a gradient fill (blending mode: softlight) to it (img 2), then it adds a thin black outline to the shape!

I add a gradient (black and white, softlight) to change only the fill colour not the gradient attributes (if I decide to change the shape's colour, the shade is fixed, the fill colour changes). 

 

ss.png

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Adobe
Community Expert ,
Apr 17, 2023 Apr 17, 2023

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Does that stay when you go to View > Preview on CPU?

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Engaged ,
Apr 17, 2023 Apr 17, 2023

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Yes. At first I thought it's the GPU glitch (as always in Ai), but no! The problem is when you bring it in Ps and make it larger (as Smart Object) it gets worse.

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Community Expert ,
Apr 17, 2023 Apr 17, 2023

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Probably an antialiasing problem. If you turn off antialiasing, does it go away?

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Engaged ,
Apr 17, 2023 Apr 17, 2023

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No. What's that?!

 

ss.png

s.png

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Community Expert ,
Apr 17, 2023 Apr 17, 2023

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Please upload a demo file to Dropbox or the like.

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Engaged ,
Apr 17, 2023 Apr 17, 2023

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I hate DP (DropBox), instead upload file to Mega which is faster! (If you don't mind). The link and file are safe!

https://mega.nz/file/phAWQRJY#ZOKFWivvfg_fkM7vxf03xzdQBFBspzuhxaG7Umfomy4

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Mentor ,
Apr 17, 2023 Apr 17, 2023

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I don't get a line when placing into PS at 300ppi or 72ppi.

Why scale it in PS when you can change the size in Illy and import at 100%...

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Engaged ,
Apr 18, 2023 Apr 18, 2023

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"I don't get a line when placing into PS at 300ppi or 72ppi."

But I get! 

ss.png

 

"Why scale it in PS when you can change the size in Illy and import at 100%..."

Because I work on a project as small as I can (about 1 inch in Illy), then import it in Ps (sometimes for mockups or a raster effect). This thin line appears in Illy (that's my main problem, I don't have any problem with Ps). I think the engineers invented (!) SO (Smart Object) for such an easy solution (every time working on a project in Ps, you don't need to open Ai to change the size).

 

I found something more interesting! Ai export as PNG doesn't have this thin line, but export as JPG has!!! Thanks for such masterpiece and epic software engineering 👏🏻🥴

sj.png

sp.png

 

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Community Expert ,
Apr 18, 2023 Apr 18, 2023

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Probably because PNG supports transparency and JPEG doesn't.

But why create a simple gradient in such a complicated way?

A simple gradient and changing the Hue in Recolor Artwork will keep your shade and change the color.

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Engaged ,
Apr 18, 2023 Apr 18, 2023

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"Probably because PNG supports transparency and JPEG doesn't."

Why does "enable transparency" hide the line, then?!! What does it mean?

My question is why Ai has to have such a problem. Why can't Ai add a gradient layer (in the appearance panel) to a solid colour layer without any artefacts/glitches?!

 

"But why create a simple gradient in such a complicated way?

A simple gradient and changing the Hue in Recolor Artwork will keep your shade and change the color."

It's not complicated! Every time I want to change the colour, no need to change the gradient, I just change the colour. The gradient isn't always a shade or in Multiply/... blend mode. The important thing here is to fix the gradient (attribute) and just change the base colour. I also do this method in Ps. I create artwork in black and white and add "Solid Color" or "Gradient" Adjustment Layer ("Clipping Mask" to the artwork). Because this makes it easy to change colour (or base colours).

 

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Community Expert ,
Apr 18, 2023 Apr 18, 2023

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Because anti-aliasing artefacts may become less visible when transparency is used.

I think a single gradient is less complicated than your method, but that's just me.

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Community Expert ,
Apr 18, 2023 Apr 18, 2023

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TenTin,

 

I for one am silly enough to (almost) always recommend PNG rather than JPEG for such artwork made as clearcut vector art for clarity/crispness, losslessness, and often smaller file size, whenever applicable; to get the colours right, you may wish/need to finalize by opening the PNG in PS (Photoshop) and attach the (missing) colour profile (such as sRGB) there.

 

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Engaged ,
Apr 18, 2023 Apr 18, 2023

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Thanks. I always export as PNG (from Ai to Ps, when I finalise the work). I embed the sRGB (or any colour profile I need), and "Compress" to make it smaller. I am wondering such industry-standard software (in vector drawing) has such a ridiculous problem! Ai can't blend a gradient layer (attribute in Appearance Panel) with a solid colour layer!

I think Denying the Problem doesn't help to solve the issue! It has to be mathematically solved because Ai is all mathematic and has a solution! I bet!

 

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