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09/20/2004 05:01:47 PM · #1 |
| I'm wondering if someone could help me....I just got the Nikon D70. I have never had a camera that could do so much. My problem is resizing pictures because it is 6.3 meg pixels. What is the best way to resizing pictures to be placed in a challenge? I have tried to submit a picture but it says it bigger then 150K. If i make the picture any small to get the size down your not going to be able to see the picture. This was my problem with my last entry. Thanks if you can help me!!! |
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09/20/2004 05:02:55 PM · #2 |
| Which photo editing program do you use? |
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09/20/2004 05:04:00 PM · #3 |
What software are you using?
In Photoshop use 'save for web'. In other programs there is usually an option to make an image web ready or email ready. This will allow you to keep the dimensions as close to the max allowed for challenges but keeping the size down so the image can be submitted.
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09/20/2004 05:06:06 PM · #4 |
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09/20/2004 05:23:57 PM · #5 |
If using photoshop: First resize by selecting image ---> then image size. Put the dimentions in one of the fields and the other will self adjust. Then select save for web . Then select the quality on the right hand side of the screen and adjust it for the desired size.
dc |
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09/20/2004 06:00:16 PM · #6 |
The first thing to realize is that there are two variables that primarily affect the file size (in bytes/kilobytes/etc.) when submitting a challenge image:
1. Image size (dimensions). (This is what megapixels are measured by: 3000 x 2000 ~= 6.3 million)
2. JPEG quality setting.
First you need to resize the image to a valid dimension, with width and height both at most 640 pixels.
Then you save to a JPEG file, which intentionally loses quality but makes the files MUCH smaller and this is necessary for posting the images to DPC.
Read the tutorial for the steps, but I thought an understanding of the factors going into image size might be helpful. |
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09/21/2004 06:14:13 AM · #7 |
one thing i always do, is i use photoshop, and i use the "save for web" option, which opens your image up in Imageready. first i do my edits or whatever, then size the dimensions right, then do the save for web. it lets you try the different compression settings and shows you how large the file will be, so that you can get the maximum quality with your 150k :)
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09/21/2004 06:22:50 AM · #8 |
I agree with Gurilla. This is an excellent tutorial by EddyG. Pay attention to this passage under Save for Web:
"Next, click on the small right arrow to the right of the "Preset" menu and choose "Optimize to File Size..." from the menu.
In the "Optimize To File Size" dialog, enter "147" in the "Desired File Size" and click OK."
(Or you can change 147 to 150). This will give you a file size near 150k and will give your photos a little bit more quality. |
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09/21/2004 06:28:16 AM · #9 |
Originally posted by flip89:
(Or you can change 147 to 150). This will give you a file size near 150k and will give your photos a little bit more quality. |
I should explain why I use 147K: I will often copy the EXIF from the full-size image to the "web-sized" version so all of the shooting data is easily referenced from one file on my hard drive. This 3K of "buffer space" allows room for the EXIF data. Unfortunately, DPC strips all non-image data from challenge submissions, so this doesn't really help in general. I probably should update the tutorial to 150. =] |
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09/21/2004 07:07:18 AM · #10 |
I usually find bicubic is horrible for downsizing.
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09/21/2004 07:10:30 AM · #11 |
From what I've read bicubic does the best job of the choices presented. With Photoshop CS there are additional choices which do a better job. Bicubic Smoother for upsizing and Bicubic Sharper for downsizing.
If using Bicubic you'll most likely have to apply a small amount of sharpening after you've resized.
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09/21/2004 07:17:19 AM · #12 |
| I use Bicubic and apply Unsharp Mask. I have experimented with Bicubic Sharper and I wasn't happy with the sharpening it does, which is beyond my control. |
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