Having problems with pdf export

Question

I never got an issue with AI, and I do not think it is a bug, but there is something I have done wrong. So I am actually doing an illustration of a Porsche 919 and there are some parts in which I used the fusion tool in order to make gradients based on a shape. So the problem is that when I use that tool, after saving it as a .pdf there is something wrong with it. As you can see in the images, the image has clearly changed giving it a look I did not wanted to. If this can help, I tried also expanding the shapes in order to make something happen, but the image was still different. What I want is to look the .pdf the same as the vectorised one in the AI. (Sorry if there is some misunderstanding, I am not a native english speaker) I have marked with an arrow the problem in the images:This last one is exported to PDF

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barbara_a7746676 · Accepted Answer

I originally made the blurred part on the right of the first photo you sent with blend tool, and the shade which is in the bottom part of the car it is made with blend tool too. I do not know why yours looks as the vectorized one when exporting to pdf and mine not. Can it be a bug?

Anyway here you are the pdf, I hope you can see the parts that have been changed automatically when exporting to pdf:

WeTransfer

Wish I was fluent in Spanish -- I'm working on it. I hope the explanation below is understandable.

Before converting your AI file to PDF, select Effects > Document Raster Effects Settings, and make sure that the Resolution setting is high enough. Even though your artwork is vector, it has a blur effect and that is treated as raster.

Otherwise, the PDF looks okay to me at 100% view, which is the most accurate zoom level. If I zoom in closely on the artwork the display looks somewhat pixelated. Maybe that is the problem you are referring to. It is normal for raster images to look pixelated if you zoom in closely.

Your PDF is quite large and takes a long time to refresh the screen. So it is possible that your screen is not displaying properly because there isn't enough memory to refresh the screen properly. Just a guess.

At the same zoom level, this is what your PDF and Illustrator files look like on my computer -- the pdf is on the left and the Illustrator file is on the right.

Could you describe what you are seeing on your computer that is objectionable?

barbara_a7746676 · Answer

Which colors are you using in the fusion? (In English there is no "fusion" tool, so I'm not sure if you are using the Blend tool or the Gradient tool.)

It looks to me like the colors might be red and black. If black is one of your colors, define back as 100% of all colors, not just 100%K.

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