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  • Enlarge image in indesign.

    I'm doing some A4 brochures and have a selection of .tif files to use for covers etc. When I import the images, some of the files are annoyingly a few millimetres short of filling the whole page. I have scaled them up and as an example the effective PPI on one of the images has gone from 240PPI to 229PPI after scaling. Is this OK for printing? I haven't got time to edit the images in photoshop to make up the extra space.

    Really appreciate any help, many thanks!

  • #2
    Welcome to the forum.
    Generally people like to have images somewhere around 300ppi for brochure printing.

    You don't have time to edit the images in Photoshop but will wait for an answer here? You probably could have been done in the time it took you to register and type your question.

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    • #3
      Hi townsend1706 and welcome to GDF!

      We ask that all new members take a few minutes to read through important threads here and here. These will explain our rules, answer frequently asked questions and explain some of the long running jokes you'll run into.

      Enjoy your stay.
      Sketching not only helps you work out good ideas, it helps you get past the bad ones.

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      • #4
        It will be a little pixellated when it prints. As to whether your client or your client's customers will notice it is a different matter. Are you being lazy or does your client's budget not allow for you to update the images?
        It is more fun to talk with someone who doesn't use long, difficult words but rather short, easy words like "What about lunch?" Winnie the Pooh

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        • #5
          Buda, can you see the pixel difference between a 300ppi image and a 240ppi image in a brochure? I see the rosette pattern or the dot gain before I notice that on the stuff we send out for offset.

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          • #6
            Enlarging it in photoshop and enlarging it in InDesign - same thing... won't make the slightest bit of difference.

            For a 150 LPI screen then 225 DPI for the images is the minimum

            For 175 LPI screen then 262.5 DPI is the minimum

            Check with your printer what LPI they are using and then mulitiply that by 1.5

            "May your hats fly as high as your dreams"Michael Scott

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            • #7
              Probably wouldn't notice the difference between 240PPI and 229PPI. But there would be a difference between 229ppi and 300.

              I have the luxury of getting a proof run out and letting the client decide if it's good or good enough.

              For colour jobs, we print 175lpi screen.
              It is more fun to talk with someone who doesn't use long, difficult words but rather short, easy words like "What about lunch?" Winnie the Pooh

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              • #8
                Enlarging in Photoshop gives you more options on fiddling with the resolution. Y
                ou gets what you gets if you enlarge in InDesign.
                Not saying fiddling with the resolution is a good idea. But you do have the option in Photoshop.

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                • #9
                  Also depends on the content of the images - images without a lot of detail, like foggy scenes, clouds, water etc. anything without sharp edges etc. you probably wouldn't be able to tell the difference.

                  Anything with lots of details, faces, corner edges, contrasting colours, sharp lines etc. you probably would notice the difference.


                  People think you have to upscale all the images to 300 PPI and in the end there is no need and you are doing irreparable damage to the image by upscaling it.

                  Even if it's short of 225 or 262.5 ppi then leave it at that - it's way better than upscaling a 225 or 262.5 ppi image to 300 ppi.

                  I think the tolerance (if I remember correctly) is that it can be 120% outside the target resolution.

                  That is, if it's 150 LPI then 225 ppi is preferred, but if it's between 180-270 ppi it will be fine - of course 300 ppi would be fine too.

                  To get an image @ 180 ppi to print on a 150 LPI I wouldn't want that image to have a lot of sharp details though - I'd be taking my life in my hands if the client was looking for a sharper representation of the image.

                  I'd have to recommend that they should reduce the physical size of the image and have it printed slightly smaller than they would like.

                  "May your hats fly as high as your dreams"Michael Scott

                  Comment


                  • #10
                    You don't always damage an image when scaling up the resolution in Photoshop.
                    It's only irreparable if you don't work on a copy of your original file.

                    We have to do it all the time. In my field, it's a fine line between the need for resolution and viewing distance.

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                    • #11
                      It's still best to leave it slightly under resolution than try to upscale it. And I see no need to upscale a 225 ppi image to 300 ppi for a 150 LPI linescreen.

                      Upscale to the 225 or the 262.5 if you have to - you get a more accurate idea of what it prints like.

                      Upscaling to 300 ppi and you have no control over what bits are discarded by the RIP.

                      "May your hats fly as high as your dreams"Michael Scott

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