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Need help regarding an image I posted
Old 04-11-2005, 11:53 PM   #1 (permalink)
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I posted the image below yesterday in the main forum. I'm getting some loss of smooth outline on the left shoe (the lower one), and some stairstep jaggies on the slight diagonals of her legs. I'm guessing this is from the resizing I did. I used PS7, from 3264 x 2448 native (Oly E-300 evolt @ 8mp) cropped to 2963 x 2321, and then bicubic resized down to 700 x 548 in one shot. Applied unsharp masking at that point.

Any advice on how to resize properly for web use?



David
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Re: Need help regarding an image I posted
Old 04-12-2005, 12:55 AM   #2 (permalink)
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try resizing the image in half or quarters. So if you have 2000 pixel across go down to 1000 or 500. Hopefully this helps.

I saw your picture earlier today. I Just signed up on GG today. The photo looks great shadows, midtones, highlights, plus a beatiful model.

just wondering how difficult it was to find models for TFP ?
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500x700 pixels doesn\'t
Old 04-12-2005, 01:13 AM   #3 (permalink)
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allow for much of any kind of interpolation. At 72 ppi it looks just fine on a monitor and for web work expect this. (besides looking at Sarah who's going to notice jaggies on her shoe!) If you wanted to do more that that don't chop out so many pixels in you resize. Once gone no amount of interpolation will get them back.
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Re: Need help regarding an image I posted
Old 04-12-2005, 09:55 AM   #4 (permalink)
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Hey Shooter, Nice photo of Sarah! She very nice. =) Did you by chance edit the background for cleanup? I might be wrong but they look like uncrisp edges you can get by useing the selection tool in PS. Anyway, just a thought.

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Nope...
Old 04-12-2005, 10:24 AM   #5 (permalink)
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Just metered right I guess (using an old Sekonic 256D flash meter - nothing fancy, just a needle and a dial). The cropped tif made in the step before resizing is smooth as silk. Actually, I tried the "Save for Web" function in PS7 at someone's suggestion and it is indeed smoother, as was staying with a 1/4 step, rather than some odd percentage of reduction.

I have much to learn on so many levels, and I've only been shooting for almost 30 years!

David
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Re: Need help regarding an image I posted
Old 04-12-2005, 10:26 AM   #6 (permalink)
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Was is shot in JPG with in camera sharpening? USM can create this effect. Also in PS drop the DPI to 72 and set the pixel size you want it to be.
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Re: Need help regarding an image I posted
Old 04-12-2005, 10:01 PM   #7 (permalink)
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This is what I was going to say before fully testing out my theory
================================================== ===========

[ QUOTE ]
... and then bicubic resized down to 700 x 548 in one shot.

[/ QUOTE ]

At that point, the web software took over and again resized your image down to something below 600 pixels, and that's most likely where the problem occurred.

For GG, 600 pixels across is the maximum size allowed. Everything larger gets dynamically reformatted. So, try sizing your image to 500 pixels across and see if that works out better for you once you've posted it.

FWIW, the vertical size of the image doesn't seem to matter to the forum software, just the horiztonal size.

Here's an example of what I'm talking about with four images that I use when teaching Photoshop and the web:










================================================== ================

But when I looked at the post, the software did NOT resize the images like I had been led to believe would be happening. Hmmmmmmm
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have you tried.....
Old 04-13-2005, 01:10 AM   #8 (permalink)
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have you tried just using the SAVE FOR WEB option. I was having probs similar to yours, but started using the SAVE for web optiong in Photoshop and setting my dimensions there instead of slowly making smaller sizes....so far I have been really happy and not jaggies like you are having with your shoe.

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Re: have you tried.....
Old 04-13-2005, 01:32 AM   #9 (permalink)
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I have had the same results. Save for web seems to work very well for resizing the photos. This assumes the photo is in sRGB at the time you start the Save for Web process - otherwise the photo will appear different after being saved from the way it looks in Photoshop.
Cheers,
rfs
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Re: Need help regarding an image I posted
Old 04-13-2005, 02:36 PM   #10 (permalink)
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[ QUOTE ]

But when I looked at the post, the software did NOT resize the images like I had been led to believe would be happening. Hmmmmmmm

[/ QUOTE ]

That is because you are hosting the image somewhere besides GG. If you added these images to your portfolio they would be resized.

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