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ILock
Joined: 22 Apr 2006
Posts: 2
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 Posted: Sun Apr 30, 2006 8:46 am Post subject: enlarging photos, resolution |
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What resolution do I use to enlarge a 3”x4” photo into one that is one that is 3 ‘x4’? I am using S-Spline (PhotoZoom) which is similar to Genuine Fractal to enlarge pictures. I am also using Photoshop 6. Obviously, a photo enlarged to 3’x4’ at 300 dpi would probably crashed my computer. Is there a mathematically way to determine resolution when enlarging photos?
Thanks
Ian |
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swanseamale47
Joined: 23 Nov 2004
Posts: 1478
Location: Swansea UK
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| Posted: Sun Apr 30, 2006 2:38 pm Post subject: |
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That is a pretty big enlargment! Are you working from a scanned image? because your enlargment is only going to be as good as the printed one your working from. You can get away with about 180dpi for most prints, but thats quite a big one, you might be better off taking the photo in and having it done proffesionally somewhere. Wayne |
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ILock
Joined: 22 Apr 2006
Posts: 2
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| Posted: Sun Apr 30, 2006 6:19 pm Post subject: |
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I am making ceramic tile murals using the dye-sublimation process to be installed in kitchens, bathrooms, walls, etc. Therefore, these pictures need to have the finess details and sharpness.
Ian |
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qubert
Joined: 24 Jul 2004
Posts: 253
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| Posted: Mon May 01, 2006 1:54 pm Post subject: |
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The more DPI you have the bigger the computer (Photoshop) can shrink it down. A normal print, no matter how big the orrginal print is, it would be 300 DPI, and say you have a 4X6 orrginal photo at 300 dpi and you want the output of it to be a 5X7, you dubble the scanned image DPI on the scanners setting when you scan it in to 600 DPI to get the 5X7 print. Note: You will have to do some cropping to your photo - it's unavoidable. Set the cropping tool to 300 DPI for a 5X7, or if you want the output of it to be an 8X10 when you scan the 4X6 photo in, set the DPI on your photo scanner bewteen 800 and 1200 DPI (I forget the actual settng because I have not done a 8X10 from a 4X6 in a while). Then when you go to crop it, set the crop tool for 8X10 at 300 DPI. Follow???? MAKE SURE YOU HAVE AT LEAST 512 MB of DDR RAM memory in your computer when doing this methos and at least 1 GB or more of hard drive storage too if you are doing a lot of photos.
Good luck, and I hope I helped. :-)
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Qubert |
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