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01/30/2006 10:47:53 AM · #1 |
| does resizing(with adobe photoshop 6.0) my pics taken with a 4 mega pixel camera from 2272x1704=1.85 mb to 640x480=49.9 kb decrease picture quality? |
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01/30/2006 10:50:53 AM · #2 |
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01/30/2006 10:50:59 AM · #3 |
| Well, you have far, far fewer pixels in the end, but if you do it right, it should look fine on screen (which is the intent of resizing something that small). |
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01/30/2006 10:52:14 AM · #4 |
| In the process you discard 3,564,288 pixels and all the information they carry. Certainly, some detail goes for good. On the other hand, that doesn't mean the image will be visually less pleasing. Downsizing is usually rather harmless. |
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01/30/2006 10:56:03 AM · #5 |
Originally posted by Didymus:
On the other hand, that doesn't mean the image will be visually less pleasing. Downsizing is usually rather harmless. |
Yes, but if you look at the file size at 640x480 of 50k, that indicates to me that the 'quality' setting for jpeg compression is very low. Typically when I save for DPC 640xWhatever @ 150k works out to about 75-85% depending on how much fine detail is in the picture. Resizing in itself does little damage if done correctly, but the compression to reach 50k likely will have a big impact.
Message edited by author 2006-01-30 10:57:34.
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01/31/2006 12:50:07 AM · #6 |
| thanks for all the answers-my problem is:i have dialup(cause i live in the boonies),i am lazy, i like to send my pics via email to walmart.com-they fix them up and send them to my mailbox in front of my house. if i try to send the untouched photos via this email method-it would take 2 to 3 hrs-when i resize them it should only take 5 to 10 min.thanks to all once again. |
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01/31/2006 01:06:48 AM · #7 |
Convenience costs money. Get ADSL or Cable.
It all comes down to how much you value your pictures. If they are just family snapshots at 4x6, taken for the memory, why not.
If you want to take something that looks amazing at 8x10, you might want to consider something a little higher quality.
It might even work out cheaper for you to buy a whack of CD's and when you have pics you want to print, mail them a CD instead.
Your call. |
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01/31/2006 01:14:51 AM · #8 |
Originally posted by melodee:
thanks for all the answers-my problem is:i have dialup(cause i live in the boonies),i am lazy, i like to send my pics via email to walmart.com-they fix them up and send them to my mailbox in front of my house. if i try to send the untouched photos via this email method-it would take 2 to 3 hrs-when i resize them it should only take 5 to 10 min.thanks to all once again. |
Downsizing to around 640 px will usually be fine for web viewing. If the file is to be printed, however, then 640 will usually not suffice. When printing, the more pixels you have to work with the better, allowing you larger print sizes at better quality (higher DPI). It would be better for you to send in a slightly compressed jpg (70-80%) that has more pixels than for you to downsize a lot and save at 100% quality.
Message edited by author 2006-01-31 01:15:38.
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01/31/2006 01:51:06 AM · #9 |
Originally posted by justin_hewlett:
Downsizing to around 640 px will usually be fine for web viewing. If the file is to be printed, however, then 640 will usually not suffice. When printing, the more pixels you have to work with the better, allowing you larger print sizes at better quality (higher DPI). It would be better for you to send in a slightly compressed jpg (70-80%) that has more pixels than for you to downsize a lot and save at 100% quality. |
I've done 4x6 @ 640x?480? from a camera phone that didn't come out too bad, but it was the only good one of 20-25. |
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02/01/2006 01:50:26 AM · #10 |
Originally posted by _eug:
Originally posted by justin_hewlett:
Downsizing to around 640 px will usually be fine for web viewing. If the file is to be printed, however, then 640 will usually not suffice. When printing, the more pixels you have to work with the better, allowing you larger print sizes at better quality (higher DPI). It would be better for you to send in a slightly compressed jpg (70-80%) that has more pixels than for you to downsize a lot and save at 100% quality. |
I've done 4x6 @ 640x?480? from a camera phone that didn't come out too bad, but it was the only good one of 20-25. |
It might be "acceptable" quality but certainly not exceptional by any means.
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