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09/06/2005 02:58:04 PM · #1 |
Hi i have this 4x6 Photograph, taken by 50mm lens. it is family photograph where lot of useless background.
Now i want create a 8x10 image from it so i decide to scan cropped version at 800dpi, What do i notice when i open the scanned image i find image bit pixelated i.e not sharp, as i mentioned Photograph has been taken by 50 mm lens hence lots of detail is lost( not that image is not sharp but things like eyes have shadows underneath them which if shot by Portrait lens would have got the subject alot closer and hence eveything would be bigger even the shadow area) i am just not getting the right technical words to write. i hope u get the picture
When i scan the image at 600 dpi i get sharper picture but problem is that
when i convert it into 8x10 it comes to 222 dpi or so and hence i have interpolate it to 300 dpi and i want avoid it
Message edited by author 2005-09-06 15:03:12. |
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09/07/2005 12:21:38 AM · #2 |
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09/07/2005 12:28:11 AM · #3 |
is this a print from a film camera that you are scanning? if so then depending on the original print quality will determine the quality of the scan. you can print an 8x10 at 150 dpi and still be good. but scanning at the lower resolution may be the best way to go. when you scan at a higher resolution you are enlarging the imperfections of the print. Sometimes some editing and a slight use of the Gausin blur tool will help take care of some of the imperfections.
If you get a magnafying glass and look real close at the print you will see what im talking about.
James |
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09/07/2005 01:22:16 AM · #4 |
If you get a sharper picture at 600 dpi than at 800, then it is possible that the optical resolution of the scanner is 600, and that when you scan at 800 it is the scanner software doing the interpolation.
I would suggest using only the highest physical resolution of the scanner, and then upsampling in Photoshop if necessary, where you can control and evaluate each step.
If you are making photographic prints (Fuji or Noritsu machines) you should get an acceptable result at 150 dpi. If you are printing to an inkjet printer, you probably need at least half the resolution of the printhead -- for example, if you have a 720 dpi inkjet (common), then you probably want your file at 360 dpi at final print size. |
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09/07/2005 04:46:56 AM · #5 |
Thanks for advice. I am not very good with scanning issues . I will print on Fuji Machine. I have scanned earlier at even 900 dpi but in those pictures image itself was quite big but in this Photograph image or subject is quite small.
I think i will scan them at 600dpi only
Thanks
Message edited by author 2005-09-07 04:50:20. |
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