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Pattie McNab
Participating Frequently
February 12, 2022
Question

Printing large banner from Photoshop file

  • February 12, 2022
  • 2 replies
  • 7795 views

I'm Printing 400dpi 8 ft x 10 ft. banner from a file created in Photoshop. Printer specs say"Depending on the resolution and pixel base, images in formats such as PDF, PSD, JPG, TIFF may become blurry when enlarged and are therefore not ideal for large prints like banners. If your artwork is in one of these formats, please make sure that the file(s) you upload meet these requirements:  100% scale at 125ppi 50% scale at 250ppi 25% scale at 500ppi"

 

Uploading a tiff should be fine right? I'm thrown by the "TIFF may become blurry when enlarged and are therefore not ideal for large prints like banners." 

Thanks for any advice.

 

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    2 replies

    Derek Cross
    Community Expert
    Derek CrossCommunity Expert
    Community Expert
    February 12, 2022

    For a large poster that's viewed from a distance you can have a low resolution, say 50 PPI.

    So that's 50 x 96"=  4800 and 50 x 100" = 5000.

    So create your artwork to 4800px x 5000px and save it as an compressed or to 10 JPG.

    (Assuming you have a high res image to start with)

      P
      Pattie McNabAuthor
      Participating Frequently
      February 12, 2022

       Thank you but it's not a photo. 

      Derek Cross
      Community Expert
      Derek CrossCommunity Expert
      Community Expert
      February 12, 2022

      Thanks. I here you but I'm working from a file given to me that is a layered psd and pulled parts out to layout for a diffent shape and size banner. Not able to just save as a psd just a psb which the printer isn't listing as an option for printing. Thanks for your help and advice. 


      It's a PSB because the file size is so big. Make a copy of it and reduce the dimensions and you will be then able to save it as a PSD and also as a Photoshop PDF document.

        T
        Test Screen Name
        Legend
        February 12, 2022

        What image size do you have now, in pixels? 

        P
        Pattie McNabAuthor
        Participating Frequently
        February 12, 2022

        400dpi, 48000 x 38400 pixles

        6.87G file

        D Fosse
        Community Expert
        D FosseCommunity Expert
        Community Expert
        February 12, 2022

        Derek is right.

         

        Since we get this a lot, I've made an illustration that hopefully puts this into perspective:

         

        Question: which one of these two images needs to be upsampled? Answer: none of them. They both have exactly the same optical resolution on the retina. The very same file can be used in both instances.

         

        Printers have one overriding concern: they don't want the blame when people bring them phone photos and ask to have them blown up to wall size. But 125 ppi is massive overkill for this, and certainly 400. Derek's suggestion of 50 is much more realistic.

         

        It's much more important that the image is of good quality such as it is: sharp, in focus, no motion blur or camera shake, good contrast with no clipping or blown out highlights, credible/accurate color. If it is, any file from a good current camera can be used as is. You don't need 48 000 pixels, you need 6000-8000.

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