No announcement yet.

PS vs scanner; both/and? either/or?

  • Filter
  • Time
  • Show
Clear All
new posts

  • PS vs scanner; both/and? either/or?

    as i read the posts re scanning, tweaking scanner settings etc. ,i know i am way out of my depth. i think the most basic thing i don't understand is that many of the scanner settings mimic what is in photoshop. ( i have epson 740). i assumed photoshop tools would be more sophisticated and precise and have deferred using any custom settings on my scanner thinking i could do the same thing only better in ps. i know i did read somewhere, maybe katrin's book, not to use the unsharp mask in the scanner, which i didn't even know was there til i read that.

    so, i guess the basic question is, do i need to tinker, how and how much? doesn't ps do the same thing, only better?

    i am aware of the resource, scantips; i have copied it, i prob. should go ahead and print and thorouglly read, but maybe yall will help me cut to the chase.


  • #2
    Hi Kathleen,

    I'm pretty much a rookie, so I probably shouldn't say anything at all. But I will, just to see if anyone corrects me. This is what I *think*:
    Setting the black and white points in the scanner will give you a better scan to make corrections on. Again I *think* you will get an easier scan to make any tonal and color corrections on in Photoshop, and lessen the chances of getting posterization from making drastic changes in Photoshop. But I would like for somebody else to either tell me if I'm right in my thinking, or wrong. Some of the other settings might be used in the scanner *if* it has better software results than the image editing program has. Anyone??



    • #3
      Hi Kathleen,

      Ed is correct from all I have learned and experienced. You want to bring in the best photo you can from your scanner so you don't have to make such radical adjustments.

      When I scan and in some photos with darks vs lights I even scan twice, I try to do as much tweeking to bring out as much image detail as I possibly can. If that means scanning twice and tweeking for darks then scan again to get detail from the highlights that's what I do.

      I also try to adjust for the best color correction before I get to photoshop because I will always need to adjust there anyway but just not as much. Remember everytime you adjust in photoshop you loose image data.

      Just think of it as adjusting your scanner to see the photo in the best possible way to pick up as much detail as it can. Photoshop is better software but if your scanner didn't pick up the data from the image photoshop can't manufacture it.

      Since I started really playing with the image adjusts in the scanner my scans have improved ten fold which makes my photoshop results better too.

      Take a photo and play around and keep scanning it in different ways and see what's good and what's not and eventually you will become familiar with the controls and you will see the difference, I promise. Hope that helps.

      Oh- Yes don't use the unsharp mask in the scanner though. You were right on that one.



      • #4
        thanks deej, what you said made sense. i'll surely use it. k


        • #5
          DJ, what do you mean scan twice? Do you somehow merge the two images together somehow to get the best image? I read the multiple scanning thread, but I didn't understand what they meant. Could explain this a bit more.




          • #6
            Hi Doh,
            Sometimes to get the best details out of the shadows you have to blow the highlights and that's not good either. So I scan once to get the best overall scan keeping in mind the details in my highlights and then rescan to pick up details in the darks that are missing in my first scan. I then select the shadows in the second scan and superimpose them over the first.

            If you paste over your shadows, make a brightness/contrast adjustment layer above all layers and move the brightness slider to lighten everything real light. It's just a reference layer you will delete when you don't need it anymore. This way you will see any lines in your pasting that won't be visible on screen but will be seen by the printer. You don't want any tell tail darker lines from your shadows below showing on the edges of your pasted pieces or any abrupt edges. This reference layer will make everything real visible. Also use it to see if you adjusted your shadows to the correct levels to match the photo pretty well. I usually do my work and then make the layer visible to see what I have to fix then make it invisible again. When I'm done I trash the brightness/contrast layer.

            I don't usually worry about the general shadows unless there are details I want seen in them. I generally select only the dark subjects such as a black animal or a man's suit. Hope that helps clarify things a bit.


            • #7
              Hi Debbie,

              I read your technique on pasting the shadows onto the other image that has good highlights (I think that was dated the 4th, so I guess I'm a slow reader). Do you think that's easier than bringing the whole image in as a new layer, then by using a layer mask, bring out the highlights? And is there an advantage to bringing the shadows into the image, rather than the highlights? I haven't tried it yet, but just thought I'd ask. I have been playing around with the gamma, and it does make a difference. Thanks again for the tip.



              • #8
                You're right Ed, I missed this. I don't seem to get messages on alot of these posts and I should. I used to get e-mails on all the ones I answered.

                OK Here goes. I think it is fine to bring the whole image over and use layer masking to paint out the parts you don't need. The reason I didn't say that was because many people hear the word layer mask and a mental block goes up. I figured cutting and pasting they knew for sure. But yes that would be the way to do it. As for moving the shadows instead of the highlights, it is because you can capture highlight details alot easier while maintaining the overall image integrity than you can the darks. If the photo where overall dark, I might do the opposite but for most photos with an even balance I merge the darks to the scan. Hope that answers you. It is all based on my own discoveries but that book I bought on scanning had the same technique which made me pleased to know I was actually experimenting on the right track. I was also sorry to find out I didn't invent the technique.


                • #9
                  Alright! Gotchya. Thanks for the reply. I knew you didn't see it, and I was glad. It gave me a chance to get on you.



                  • #10
                    Always knew you were a wise guy.

                    Glad I could be of service.


                    Related Topics


                    • garfield
                      Buying for a scanner help
                      by garfield
                      Ok, i would like to buy a scanner now. Probably a scanner that will work with photoshop since its better. i have the software i dont need to nstall another software. I see corel mostly use to scan image with different resolutions. I dont know if PS can do this in scanning since i have no idea in scanners...
                      05-22-2003, 12:15 AM
                    • Jon Foster
                      Scanning Workflow
                      by Jon Foster
                      Sorry if this has been asked before but I did a quick search and only found threads that sent me off reading about other topics.

                      What is the suggested workflow for scanning pictures? I use a couple of flatbeds but can never seem to get images I'm happy with (I mean for like 12 years...
                      03-11-2006, 06:31 PM
                    • pavel123
                      How essential are scanner specs
                      by pavel123
                      I apologize if I am asking an obvious (to anybody else) question.

                      I have a relatively old scanner (going 5 years or so back HP ScanJet 3400, it wasn't a high end scanner at that time). Can say I am happy with the quality of scanned images. Colors are off, images seem darker (which is a...
                      11-01-2009, 05:47 PM
                    • G. Couch
                      Finding a scanner's "sweet spot"
                      by G. Couch
                      Most consumer grade scanners have what is known as a "sweet spot"- an area where the scans will be at their sharpest, and with the least amount of noise. For most scanners this a narrow area running down the middle of the bed, but it can vary greatly from scanner to scanner. Higher end scanners...
                      06-07-2002, 01:17 PM
                    • grahamjacks
                      Using film scanner
                      by grahamjacks
                      I have a K-M DiMAGE Dual IV scanner for film and slides. The software that comes with this scanner lets you make many kinds of adjustments to the image while it's in the scanner.

                      I use PSE2 for editing my scanned images and I have Hidden Power of PSE2, which I'm working my way through....
                      06-11-2007, 12:00 PM