PDF Problems

The brief states that the final image must be exported as a high quality PDF file. Adobe Illustrator supports this. 


Once I exported the image as a high quality PDF, I noticed issues with the image. The stroke around the F was smaller, the colours changed, and there is a very annoying line on the splash at the fishes tail. 


PH


I was confused when I saw these, as Illustrator was not showing this in the program, and when opening the AI file, neither of these problems are there. I then saved the image out as a JPG, and in this version none of the problems were present either. I'm not sure why this is occuring, as I have tried to save it out as a PDF many times, using the highest quality options, and it is still happening.


PH