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DPChallenge Forums >> Tips, Tricks, and Q&A >> ?? about cropping/resizing
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03/10/2002 01:24:09 AM · #1
I was working tonight on some photos that I took to submit for the current challenge, and in the cropping of them, then resizing, I had some problems.

How do I resize the picture after cropping to exactly 640x480 without distorting the picture?
03/10/2002 01:32:06 AM · #2
There is usually no good way of enlarging a picture without degrading quality. There is a piece of software out there called Genuine Fractals that will allow you to enlarge an image infinitely (at least they claim), and that seems to be the only way to enlarge a picture.

Next time, work with a copy. That is the safest, and best, way to do editing. :)
03/10/2002 02:33:55 AM · #3
I assumed ohsmom was asking how to crop a picture and still have it resizable to 640x480. I struggle with this all the time.

If you're using Photoshop, you're very lucky. When you select the marquee tool, you can "[x] Contrain To Ratio" -- and then type in 640 for the height and 480 for the width. (or 4, 3, or whatever).

I often use ACDSee to prepare my images for the web -- and there's just no easy way to do it. While you're cropping, it'll say Width: X, Height: Y. If you're a genious you can figure out how to resize to exactly a 4:3 ratio. Otherwise just keep trimming off a little at a time. =/

I try to do the cropping while taking the photograph, it usually makes things easier on me post production time.
03/10/2002 09:43:50 AM · #4
"I try to do the cropping while taking the photograph, it usually makes things easier on me post production time."

That's how it should be! Damn the bloody crop!
03/10/2002 10:21:29 AM · #5
Next time, try renaming your cropped pictures before you save them. That way, you will always have an original to go back to if your cropped results do not come out right.
03/10/2002 12:42:31 PM · #6
Thanks Langdon, that was what I was asking. Normally I do try and "crop" to a finished picture while taking the pic,and with my 35mm film camera that is what I almost always do. But the beauty of digital is that you are allowed to "crop" out unwanted elements after the fact. I just have never had to worry about the size of the finished "crop" until now.

I had taken a picture and after I cropped around the outside edge, and resized it to the 640x480, because of the subject, it was very obvious that the pic was distorted. I was just wondering if there was any secret to it that I was missing.

It is a challenge I welcome and for me this is where the real challege comes in!

Thanks for all the responses!
03/10/2002 02:26:09 PM · #7
If you use Photoshop and your photo is originally in a 3:4 ratio and you want to crop it, this is what i do:

using Photoshop 5.5
1) select -> select all
2) select -> transform selection
3) hold down the shift key and resize the selection, this will keep the ratio, if you need 4:3 ratio then rotate the selection 90 deg
4) then, after applying the selection you can, move the selection around and frame your photo
5) Edit -> copy, then file -> new, accept the defaults then edit->paste and save
6) then, resize your image to 640x480 or 480x640 using %s and keeping proportions

save the new image and submit to dpChallenge and don't save changes to your original.
03/10/2002 06:33:52 PM · #8
'When you select the marquee tool, you can "[x] Contrain To Ratio" -- and then type in 640 for the height and 480 for the width.'

Cheers langdon, I forgot about that one.. this is a much easier way of keeping ratio than the 'shift' key method...
03/11/2002 01:08:01 AM · #9
(FYI: I work in Photoshop & I usually shoot higher than 640x480 shots.)

Easiest way I've found is to crop the original (larger hopefully) image down to the borders you want, then resize it to whichever dimension it will fit in (so if it's a bit too long, resize it to 480 height, for example). Then do Select All. Go to File|New and create an image which is 640x480 (or 480x640, as the case may be). Then paste the image into this new file. Use the Move Tool (Keyboard: V) to move the image around so that you have as much of the area you want visibile, visible. You can use the keyboard arrows to move it, btw.

Unfortunately, this requires Photoshop....
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