I want to submit pictures to Pop Photo's Your Best Shot contest, but you require a 3MP or higher (9MB) image size if accepted for publication. I shoot with a Canon EOS Digital Rebel XT and, even with the largest format at 8 megapixels, I can't get a 9-megabyte file size. Does that mean I can't participate? --Arjun Saha
No, it doesn't. Please send your photos. Most digital images have two file sizes. The first is the size of the file that's written to a memory card, usually as a compressed JPEG. This is what camera makers use when they state how many images fit on a card of a given capacity. But when an image is imported into an image editor such as Adobe Photoshop, it assumes a second, uncompressed file size. So, your 8-million-pixel Digital Rebel files will triple to 24 megabytes once they're opened and viewed easily large enough to be published full-page if you triumph in Your Best Shot. Just don't send us RAW files, which take up more space than JPEGs and need post-processing that's your job.