How can I focus a picture that I made bigger?

I
Posted By
Ibelith
Apr 30, 2005
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488
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I used my "PhotoImpression" program to enlarge a picture, but I’m wondering how can I focus that picture now. If you can’t help me with the "PhotoImpression" program, tell me about any program that helps focus pics after been enlarged. Thanks for your time and help.
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J
jscheimpflug
Apr 30, 2005
"Ibelith" wrote in message
I used my "PhotoImpression" program to enlarge a picture, but I’m wondering how can I focus that picture now.

You can’t.
GV
Gerard Verhoef
Apr 30, 2005
You can’t is a true answer of course, but you can use Photoshop on the original photo and perhaps get a better result than you got with photoimpression.

Suppose original Photo has some 800 x 600 pixels and you enlarge it with a factor 2, then there are two ways of doing that

Photoshop can replace every pixel with (2×2=) 4 pixels that equal the original pixel.
The photo looks like it is built with small squares.

Photoshop can however use some kind of interpolation to resample the photo. Now every pixel is replaced by 4 other pixels, but these 4 pixels are kind of in between the old neighbour pixels.
If you look at the new enlarged photo, you won’t see these small squares. This might be a better way of enlarging. But it very much depends of the picture you started with whether this looks any good. You cannot get more detail than you had in the original photo.

There is one more trick I know off: Photoshop has a sharpen filter. Wat is does is looking for "borders" in the original picture and tries to sharpen these.Again: it very much depends on the original phote whether this is any good.

Gerard
T
Tacit
May 1, 2005
In article ,
"Ibelith" wrote:

I used my "PhotoImpression" program to enlarge a picture, but I’m wondering how can I focus that picture now. If you can’t help me with the "PhotoImpression" program, tell me about any program that helps focus pics after been enlarged. Thanks for your time and help.

The first ting you have to understand is that nothing and nobody can enlarge a picture made out of pixels without losing quality. An enlarged picture will always look blurred or pixellated, and no program and no technique can do anything about that–it is not even theoretically possible.

There are things you can do in Photoshop, such as using "Bicubic Smoother" to enlarge the picture and then sharpening it afterward–that will look a little better, but nothing will enlarge a picture and give you great results.

Sorry…

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