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05/09/2006 09:15:38 AM · #1 |
OK, I took picture, cropped, corrected exposure, contrast saturation etc. Then I decided that I needed to make sure that it met guidelines. Looked on sight and found requirements of file size less than 150 kb and size between 160 and 640. Wanted best dpi resolution (bigger is better right?)
Problem 1--Software, Microsoft Digital Image Suite 2006, shows dpi to be 72 and will not let me increase. Isn't this the lowest quality acceptable? Is there anyway to increase the dpi? Is this a camera flaw? I know when I scan photos into my computer they show dpi of 300.
Problem 2--When I decrease size, by proportion, to 640/576, my file size was only 63.7. Seems low for a 160 kb maximum. (Some of my adjusted photos showed a resized file size of 10 KB.)
I feel so ignorant and lost... |
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05/09/2006 09:24:42 AM · #2 |
72 dpi should be fine. 640 pixels on the longest side is right, too. If your image has a lot of plain spaces it might not be a very large file size.
What is the size of your original?
(Also, be sure you have saved the original and are working on a copy! May be "obvious" but it's worth saying...) |
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05/09/2006 09:26:58 AM · #3 |
I suggest you start with this tutorial (under the menu Learn > Tutorials) -- the one on resampling will probably help too.
As mentioned, DPI is irrelevant -- total pixel dimensions and compression ratio are what are important.
Message edited by author 2006-05-09 09:27:53. |
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05/09/2006 09:30:30 AM · #4 |
| Original was 1.3 MB file size and 2048/1536. And yes, I did save the original. I felt like this was the only part I got right. Thanks |
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05/09/2006 09:32:02 AM · #5 |
Ignore the dpi, it means nothing at all for screen display. Focus on the size in pixels, and make sure the longest side is 640px. If your file size is either too low or to high, you need to asjust the quality setting. There should be some way to adjust this setting when you save. I'm not sure how this works for your software.
Since you've already saved the resized version at a pretty small size, you'll want to go back to a full sized version, do the resizing again, and "save as" using a higher quality setting. It's not necessary to be extermely close to the 150k, if you're over 100k or so for most images, you will be fine. If there's a lot of fine detail in a shot, then try to get as close to 150k as you can.
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05/09/2006 09:34:00 AM · #6 |
| Thanks, I will spend time and go over the tutorial extensively. Does it matter which size I shoot in. Should I be using the 640/480 size? |
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05/09/2006 09:36:50 AM · #7 |
Originally posted by bgslaw:
Thanks, I will spend time and go over the tutorial extensively. Does it matter which size I shoot in. Should I be using the 640/480 size? |
Shoot in the largest size your camera can capture, and resize later. If you ever want a larger version of a shot for printing, you'll be glad you have the original, larger file.
Do remember to keep the unedited, out-of-camera originals in a safe location and work on copies.
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05/09/2006 09:37:54 AM · #8 |
| Most people recommend shooting in the largest size and reducing later -- that keeps your options open for cropping, making a print, etc. |
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05/09/2006 09:49:57 AM · #9 |
| What I do in DIS, is to adjust the size using Format>resize image, so that the biggest side is 640 (well, for a number of challenges I was doing 540, because my brain is old and feeble). Then, when you do a file save as, there is an options button on the dialog box that allows you to adjust the size between low and high quality. 100 is usually too big, but somewhere in the 90's usually works for me. |
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