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enlargement
Old 09-30-2004, 02:11 PM   #1 (permalink)
jefferies
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What is the best way to enlarge a image for printing. I need a 16x20 or slightly larger print size. In photoshop (I use photoshop 7) you have a choice of checking the "resample image" box which will lock your DPI and increase your pixel size from about 2400x3000 to 4760x6000. If left unchecked the dpi will lower and pixel stays the same? Should it be done all at one time or in two smaller size increments with unmask sharp at each size.

Would it be better to have a smaller image scanned at a very high resolution and then have it enlarged. I know it would be a second generation but I have seen this done for poster size images that came out nice.
 
 
Re: enlargement
Old 09-30-2004, 05:21 PM   #2 (permalink)
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What I usually do, it may not be the best way, and I have never done one to that size, goes something like this. I increase the height and width to the desired size, and increase the dpi. For something this size, I would take your current number adn mulitply it by a factor of 2 - 3 times. Good luck.

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Re: enlargement
Old 09-30-2004, 08:10 PM   #3 (permalink)
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This is one of those times the book helps and that book is The Photoshop CS Book by Scott Kelby.
He recommends in increments of about 10% to avoid a blur or softening of the image. Go to Image>Image Size. Make sure Resample Image is turned on & change Resample Image Interpolation Method to Bicubic Smoother. Change untis of measurement from Inches to Percent and type in 110% which will increase the image by 10% increments.
Since going to a poster size requies repeating this a number of times, he outlines how to create an action. It is all so simple. Try it and you will see a photo is worth a thousand....

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Re: enlargement
Old 10-01-2004, 10:25 AM   #4 (permalink)
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Thank You
The 10% increment looks great going to 16x20 in my sample print! I have to find that book for more pointers.
 
 
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