12 Replies Latest reply: Apr 23, 2011 2:31 PM by Scott Falkner RSS

    Increasing document size or resolution first?

    margieannejulie Community Member

      My typical native file comes  with resolution 240 and 10 X 16 inches size. I need to increase resolution to 300 and change size to a height of 14.

      Of course I uncheck resample image, then which one do I change first, resolution or height, and why?

      This is not a qustion about upsampling (yet).

        • 1. Re: Increasing document size or resolution first?
          MTSTUNER Community Member

          You won't be able to increase the height to 14

          and to a resolution of 300 without checking the resample image box.

           

           

           

           

          MTSTUNER

          • 2. Re: Increasing document size or resolution first?
            c.pfaffenbichler Community Member
            Of course I uncheck resample image, then which one do I change first, resolution or height, and why?

            If you don’t resample it is irrelevant anyway.

             

            Why do you need to increase resolution?

             

            Do you process your images with Camera RAW? If so you could set them to 300ppi right away.

            • 3. Re: Increasing document size or resolution first?
              margieannejulie Community Member

              Having to make a print of that size, the people who will display the pictures requested a resolution of 300 dpi.  If I change it in raw, I still have to resample when I open it in PS?

              • 4. Re: Increasing document size or resolution first?
                jveigel

                Yeah I don't think it matters which one you change first, if you're not resampling. But from what it sounds like you're doing you want to uncheck resample then change the document size. Then recheck resample and then change the DPI so it up reses it. Cause I mean you could change the DPI without resampling it, but thats just going to be the setting it thinks it's at and not really 300dpi, which I would think could cause issues later on. I guess I'm not an expert on this particular function but it seems like that should help.

                • 5. Re: Increasing document size or resolution first?
                  c.pfaffenbichler Community Member
                  If I change it in raw, I still have to resample when I open it in PS?

                  If you are determined to deliver them at 14inches with 300ppi you will still have to upsample, but you can put the resolution out of your mind when you start with 300ppi.

                  I think the  Camera RAW default resolution is 240ppi, but one can change that resolution and the setting should stick if I’m not mistaken.

                  • 6. Re: Increasing document size or resolution first?
                    MTSTUNER Community Member

                    Also if your working on a camera raw file, you can upsize in the camera

                    raw dialog, which may produce better results than resampling in photoshop.

                     

                    Click on the workflow options at the bottom of the camera raw dialog and set

                    the resolution and pick a bigger size, Then in photoshop check the size using

                    the image size dialog.

                     

                     

                    wfo 1.png

                     

                     

                    wfo 2.png

                     

                     

                    wfo 3.png

                     

                     

                     

                     

                     

                     

                     

                     

                    MTSTUNER

                    • 7. Re: Increasing document size or resolution first?
                      margieannejulie Community Member

                      Thanks everybody, just one more questions while I am here, my 5d MarkII is only giving me 8 bits in raw, of which I am surprised.

                      If I change it to 16 bits in raw, will it be a real 16 bits, or just typed in, and would it be worth it, considering that I am making prints, I mean,

                      would it be useful, like showing?

                      • 8. Re: Increasing document size or resolution first?
                        margieannejulie Community Member

                        Excuse my bad english but what do you mean by you can put the resolution out of your mind when you start with 300?


                        • 9. Re: Increasing document size or resolution first?
                          MTSTUNER Community Member

                          I don't think camera raw files have a set bits/channel as far as the setting in

                          adobe camera raw. Setting for 8 bits or 16 bits really depends on what you'll do with the

                          photo after camera raw. If you output to 16 bits/channel in

                          the camera raw dialog, you retain more data than 8 bits/channel, which may

                          give better results when doing other things to the photo in photoshop and one

                          can always change to 8 bits/channel in photoshop proper.

                           

                          Generally it's best to do as much processing in 16 bits/channel with camera raw files

                          and then switch the bit depth according to the output needs. I know that macs are able

                          to send 16 bits\channel data to the printer, but few home type printers are actually able

                          to use the extra data.

                           

                           

                          As far as being a true 16 bits/channel file, probably not, since most affordable slr

                          digital cameras output in the 12 to 14 bits/channel range, but still using 16 bits/channel

                          retains the most data possible.

                           

                           

                           

                           

                          MTSTUNER

                          • 10. Re: Increasing document size or resolution first?
                            margieannejulie Community Member

                            That actually makes a lot of sense, thanks again

                             

                            Anne

                            • 11. Re: Increasing document size or resolution first?
                              M Blackburn Community Member

                              I am trying to understand a bit about Camera Raw. I Hope you can answer a few questions for me bearing in mind that I am not referring to Raw files, but just JPEGs opened in Camera Raw.

                               

                              > upsize in camera raw may produce better results than resampling in photoshop

                               

                              I can see  how upsizing in Camera Raw may produce better results than Photoshop because Camera Raw limits its resizing to specific sizes based on camera formats. But does Camera Raw do a better job than Photoshop when the same image is changed to the same pixel dimensions?

                               

                              A corollary to this is that if none of the available sizes in  Camera Raw are what you need in the final output, would it not  always be better to resample in Photoshop?

                               

                              I thought changes in Camera Raw were generally non destructive, but is that the case for image size? Subsequent opening of files that have had their image size changed will show more size options, but will also show the new size as actual (i.e. the size without either a plus or minus sign). I also find that if the size is increased the original size can become unavailable later. This seems to indicate that changing the size resamples destructively each time.

                               

                              But I notice that images do not always open to the “actual” size. My point and shoot camera is 7.1 MP, and Camera Raw opens the images as 3.1 MP (–).  It seems unlikely that changing the size to 7.1 MP (which is not indicated by either + or –) resamples the image, especially in view of the fact that the image opens in Photoshop reflecting the pixel dimensions that correspond to the 7.1 MP size.

                              • 12. Re: Increasing document size or resolution first?
                                Scott Falkner Community Member

                                I will asume the height is 16 inches and you want that reduced to 14 inches. If you set Resample to none, then change the height to 14 inches your resolution will increase to 274 ppi. This should be acceptable. Whenever I hear people say they require 300 ppi I know I am talking to CSRs or salespeople who are just reading a sheet of paper they only pretend to understand. for high resolution printing 274 ppi will be acceptable. You will not increase the quality of your output by resampling to 300 ppi.