Marco Arment on the big drawback of only taking photos with “the camera you have with you”:
The Rebel photos look decent. The 5D Mark II photos look great. But photos from the iPhone 4, and even from the 4S, don’t hold up. They look fine on a 3.5-inch screen, but they look terrible on my big desktop monitor and abysmal on the Retina MacBook Pro.
Most of my favorite photos from the last two years only look good on small screens.
This is a wake-up call to me. I’ve almost exclusively been taking photos with the iPhone 4S since I got one in October. I’ll have to consider taking the Canon out with me more often.