Here's the annoying thing, and what is no doubt tripping up Sue: A dpi value is usually stored as metadata with your digital photo. That's really misleading, especially when a program resets the dpi value for some mysterious reason. As a general rule, you should ignore the dpi value and pay attention to the photo's resolution in pixels. That's the real indication of a photo's size.
Hot Pic of the Week
Get published, get famous! Each week, we select our favorite reader-submitted photo based on creativity, originality, and technique.
Here's how to enter: Send us your photograph in JPEG format, at a resolution no higher than 800 by 600 pixels. Entries at higher resolutions will be immediately disqualified. If necessary, use an image editing program to reduce the file size of your image before e-mailing it to us. Include the title of your photo along with a short description and how you photographed it. Don't forget to send your name, e-mail address, and postal address. Before entering, please read the full description of the contest rules and regulations.
This week's Hot Pic: "Sentinel" by Philip Gentili, Overland Park, Kansas
Philip says that he created this image by combining a shot of the moon, taken in his front yard with a Canon SX10 IS, with a photo of a dead tree that he shot with an EOS Rebel T2I. He merged the images using Photoshop CS5.
This week's runner-up: "Quince Blossom in Sunlight" by Constance Renda, Little Falls, New York
Constance says: "I took this photo with a Kodak EasyShare C190. Since I was shooting into the sun, with the quince blossom backlit, I used the camera's flash to fill and brighten the front of the flower."