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DPChallenge Forums >> Tips, Tricks, and Q&A >> a size matter (yes, size does matter;-))
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Showing posts 1 - 5 of 5, (reverse)
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 05/27/2005 08:07:32 PM · #1
Please forgive me my total ignorence.

In post processing all my pics I follow the DPC Tutorial.The obvious result is that all my processed pics are 'small' 150's with a max side of 640.

My question, what numbers do I have to change in the 'Tutorial' to have some bigger pictures saved?

I don't even know if my question make sense, but if it does, can someone please help me.

The reason I want bigger photos saved is to make some prints. Is there a tutorial on preparing pics for printing big sizes somewhere?

As you see I am BC... before computers.
Peter
 05/27/2005 08:10:49 PM · #2
read this it's perfect...

//www.dpchallenge.com/tutorial.php?TUTORIAL_ID=26[url]
05/27/2005 08:18:17 PM · #3
I'm not sure what tutorial you are following or why you want to "post process" your photos.

The simple rule is to take photos in the highest resolution setting your camera offers with as little compression as possible. In other words your camera should have two image size options: The largest dimensional size which would be around 2500 for the 300D and if the camera has a jpg file saving option use "Fine" or a similar command for least amount of compression.

When you transfer your images to your computer, keep them at these sizes in a separate file. Any changes you make to the image's size or post processing as you put it, should be saved as a separate file in another folder so the originals will not be harmed.

If you really need to find out about image size and compression there is a free lesson on this subject at //www.schoolofphotography.com/if/infocus26.html

Also if you really don't know where to begin, try a digital photography course which School of Photography runs. Check out //www.schoolofphotography.com/digital_photography_course.html
 05/27/2005 08:27:28 PM · #4
If you're working from the DPC tutorial, it's a very good guide for web display. For non-DPC use, I sometimes use 800 in place of the 640 figure when resizing. When selecting a file size for web display, 150k is again a good size if the longest side is 640. Maybe go a litle bigger, 200k or 250k, if your longest side is 800.
For printing, you want the highest resolution you can get (the resolution it was shot at in most cases) and so you do no resizing at all. you also want to minimize compression, so use a lossless format like TIFF, or save at very high JPEG quality. Your print files willbe quite large, JPEGs can easily go over 2.5 MB, but this is required to keep all the detail without introducing compression artifacts.
 05/27/2005 08:31:24 PM · #5
I shoot in RAW.... and I only go for highest Quality. Thanks for the info, I like the idea of setting for 800.

Is there a DPC tutorialon Preparing pics for print for Dpc?
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