High dynamic range (HDR) photos on iPhone 4
One of the big pluses of the iPhone 4 is its high dynamic range (HDR) camera, which can capture amazing images. However, the file size of these images tends to be quite large and e-mailing them as attachments can take a bite out of your data plan. Our advice: turn it on if you want high resolution; turn it off if you're going to e-mail a photo to a friend.
