imacken Posted September 11, 2015 Posted September 11, 2015 I have a Designer file that is 2440x610mm @ 300dpi. Whenever I export it to pdf, and reopen it in either Designer or Photo, it comes in at 2440x610mm @ 101dpi. Opening it in Photoshop or Illustrator gives the correct 300dpi. I thought that this issue had been resolved in previous builds, or is this something different? Additionally, if I export as a jpg, the file also shows 101dpi, but in Photoshop and Illustrator as well!
Staff Callum Posted September 11, 2015 Staff Posted September 11, 2015 Hi imacken, Could you please attach the file to this thread so I may investigate this further? Any files will be deleted once they have been looked at :) C Please tag me using @ in your reply so I can be sure to respond ASAP.
imacken Posted September 11, 2015 Author Posted September 11, 2015 Hi Callum. Here you go! Hayle Football Club hoarding 2440x640.afdesign
Dave Harris Posted September 11, 2015 Posted September 11, 2015 PDF does not have a DPI setting, so we deduce one from any embedded bitmaps we find. Obviously it doesn't make much difference to the vector content, but doing this does mean that any areas rasterised on export will get similar quality to the images already there. I tried exporting at 72dpi and 192dpi and then imported into PhotoShop. It used 300dpi for both, so I think it is just lucky its default happened to match what your document originally was. I'm not sure where you are seeing DPI in Illustrator, but when I exported to PNG it wanted to use 72dpi for both, so again I don't think it is doing anything clever.
imacken Posted September 11, 2015 Author Posted September 11, 2015 Guys, you are right about PS and opening pdf files. It was a coincidence about the 300dpi! Also, I cannot reproduce the 101dpi issue I had when exporting jpg from the Designer file. Every time I try now, it exports to whatever dpi I had set in the document. However, I'm confused, as I didn't just make it up earlier, the jpg exports were being saved @ 101dpi when set to 300 in document. but, I can't replicate it at the moment. I think I need a drink!
Staff Leigh Posted September 11, 2015 Staff Posted September 11, 2015 I think I need a drink! Sounds good. I'll join you ;)
Dave Harris Posted September 11, 2015 Posted September 11, 2015 If you've done any work in the document, you may have done something that needed to be rasterised for PDF, and the rasterisation will happen at the document's DPI by default. Then when we import the PDF, we'll deduce the DPI from those rasterised bitmaps, and get back the number you first thought of.
imacken Posted September 11, 2015 Author Posted September 11, 2015 Another thing that happens is when I open the pdf (of the file posted above) in Photoshop, it spends quite some time 'rasterising' the image before it fully loads it. Never seen that before. What is different about that pdf?
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