i do my framing and composition in the dslr in the field when i shoot the image. this mean that the amount of cropping is at a minamum. try to frame and compose you shot the WAY YOU WILL USE IT LATER. if the file is too big then make it samller later. first you should always shoot at max size and image quality. i have printed an awful lot of my istd shot at 20x30inches with no problem at all. More compression means throwing away more information from your images. You should be saving with the /least/ amount of compression resulting in the highest quality file. By saving to the "highest compression" that means you are doing exactly the wrong thing to your images. What Andrew should have said is "highest quality" and left off the compression part. There's something that needs to be clarified here. You need to find a different workflow and probably new editing tools. Right now your images have too few pixels and are compressed far too much to be good for anything but 4圆 prints. You need to be worried about both the total number of pixels and the file size. It will still print the file, but the warning is there for their protection - trying to minimize the number of customers unhappy with their prints because their files were low res. So for example, if it wants 250 PPI files and you submit an 800x1200 file to print at 4圆, that's 200 PPI and it gives you a warning. The Wal Mart system is probably set up to warn you if your resolution is below a certain PPI. I shoot raw if I'm likely to do edits and only save JPGs as a final step. Any time you compress an image to JPG you introduce quality loss, so if you get JPG from your camera, edit, save as JPG, load it again later, edit, save as JPG, etc., you can start to really lose quality. Unless your software is doing something weird, like a save for web preset.įile size can be dealt with by making sure you use high quality compression settings when saving, and resaving as JPG as little as possible. Are you cropping or resizing the shots? There's no reason making them B&W or using blurring should decrease the resolution.
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