Photoshop PPI question for enlarging pictures

Discussion in 'Photography Beginners' Forum' started by eric-holmes, Feb 17, 2010.

  1. eric-holmes

    eric-holmes No longer a newbie, moving up!

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    I have a project I am working on for a customer. She wants to use a series of three of my pictures. One 16x24 and two 8x10's. I am currently working on the composition of the 16x24. When I crop and resize in photoshop, it makes the ppi 87. That doesn't seem very well. What should it be for a 16x24? Is there a formula or do you just pick 300 or 400?
     
  2. KmH

    KmH Helping photographers learn to fish Supporting Member

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    Which Photoshop do you have?

    First click on Image > Duplicate. (always edit a duplicate, not the original)

    After putting in the inch dimensions you want,

    enter 300 in the Resolution box and make sure it is set to pixels/inch

    You need to put a check mark in the boxes for:
    • Constrain Proportions
    • Resample Image
    Select Bicubic Sharper as the algorithm in the box right under "Resample Image". (I know it says for reductions, but mine and other's tests show it works very good for enlargements too.)

    Then, click OK!

    Some labs have a minimum resolution. At Mpix, it is 100 ppi. If you upload an image that is 99 ppi, no dice, they won't print it.
     
    Last edited: Feb 17, 2010
  3. eric-holmes

    eric-holmes No longer a newbie, moving up!

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    I have Photoshop elements.
     
  4. rufus5150

    rufus5150 TPF Noob!

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    +1. And then some.
     
  5. KmH

    KmH Helping photographers learn to fish Supporting Member

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    Ok! You're probably all set then.

    You didn't mention if you have Elements 4, Elements 5, Elements 6, Elements 7, or Elements 8.
     
  6. eric-holmes

    eric-holmes No longer a newbie, moving up!

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    lol dang, I forget the important stuff... 8
     
  7. KmH

    KmH Helping photographers learn to fish Supporting Member

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    Not a good trait, for a photographer. :D
     
  8. burstintoflame81

    burstintoflame81 TPF Noob!

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    Not to get too off topic, but has anyone used any plug ins like OnOnes Genuine Fractals or Alien Skin's Blow Up for making super sized enlargements?
     

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