From 35mm Negative to 8 x 10 print!

CS
Posted By
CJ_Schaaf
Dec 10, 2003
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638
Replies
6
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Closed
I had a series of 35mm negatives scanned by a service (@ Walmart) to jpg files and placed on a CD. One of the files is 1818 x 1228 pixels (18.94 x 12.79 inches), and displays at 96 pixels/inch on the screen. How do I crop this to be a 8 x 10 when it is printed. (Note: I attempted to crop and print and the image printed out with poor quality.)

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BillJ
Dec 10, 2003
That 18.94 x 12.79 size is only true if you are viewing at 96 pixels per inch resolution. This is fine for seeing the picture on a computer screen or a TV screen. But if you are printing an image on an inkjet printer, you need to send that image file to the printer with a resolution of around 225 to 300 pixels per inch. Anything much more than that is overkill, and if it’s much less than 225, you may see actual pixels in your printout.

You’re trying to apply 1228 pixels across 8 inches. 1228/8 = 153 ppi resolution. No wonder you regard the print as poor quality.
GH
Gary_Hummell
Dec 10, 2003
My understanding is that the Fuji downsamples to about 250 ppi. So you have enough pixels for about 7"x5" (1818/250=~7).

Gary
HS
Henry_Skinner
Dec 10, 2003
Instead of cropping you might want to change the image size with resampling unchecked. Of course then the full image will be printed but the resolution will be increased.
DC
Don_Coon
Dec 10, 2003
I had a series of 35mm negatives scanned by a service (@ Walmart) to jpg files and placed on a CD. One of the files is 1818 x 1228 pixels (18.94 x 12.79 inches), and displays at 96 pixels/inch on the screen. How do I crop this to be a 8 x 10 when it is printed. (Note: I attempted to crop and print and the image printed out with poor quality.)

Unless you change the resolution to something other than 96ppi, you will get a poor image. Your printer expects a 300ppi image.

Unless you up-sample, your file is going be at best 182ppi after the crop so don’t expect a great picture. 300ppi is generally considered what’s needed for an excellent shot; 240ppi for very good; 200ppi for good; 160ppi for OK.

To print it on your home inkjet, simply click on the Crop tool and set the width and length values to 8 and 10. Set the Resolution to 300 pixels per inch and do the crop. Click on Image | Resize Image to confirm that you got the correct settings.

Upsampling won’t improve the image. All it does is provide the pixels your printer expects through interpolation.
KP
Ken_Pratt
Dec 10, 2003
You have not said which version of Photoshop you have but in version 7 go to help and click on resize image and it will guide you through the process.

You said the image was poor quality but did not say what was wrong with it. The more information you give the better the answer you will receive.

Ken

ps. The above post is a more complete answer than mine but was posted while I was typing this response.
FC
fc_callahan
Dec 12, 2003
CJ_Schaaf wrote:

I had a series of 35mm negatives scanned by a service (@ Walmart) to jpg files and placed on a CD. . . . Note: I attempted to crop and print and the image printed out with poor quality.

As others have noted, you need to upsample your image to something in the range of 240-360 ppi in order to get a decent print on a desktop printer. Basically, you do this by changing the resolution in the Image Size dialogue (to 240 pixels/inch, for example) and then adjusting the print size as desired (leaving room for the margins your printer
requires)–be sure that both the Constrain Proportions and Resample Image boxes are checked. (Note: I’m still using PS 5.5, so the details of the Image Size dialogue may be different for you).

Beyond that, though, your image quality is inherently limited by the fact that it’s a jpeg. In the best of cases, you *might* be able to get a passable print of maybe 3×5 inches–anything larger is bound to look bad. For decent prints of photographs, especially at sizes of 8×10 or larger, you really need to be working from .tifs or some other
lossless format, scanned at a fairly high resolution–2400 ppi or better (roughly 20MB in 8-bit mode). You may need to go to a proper camera shop or pro lab for that type of scan if you’re not doing it yourself.

(Note 2: What constitutes acceptible print quality varies from individual to individual, so you may be able to get prints larger than 3×5 that are acceptable to you even someone else might consider them unacceptable.)

Craig

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