Anyone who has searched online for photography tips has probably come across the work of Trey Ratcliff.
Trey pioneered the use of HDR (High Dynamic Range) photography, his hard work in the photographic medium has been recognized with his HDR photograph being the first on display at the Smithsonian. He shares his knowledge and passion of photography on his blog Stuck in Customs. If you need a dose of photographic inspiration, read my review, then head over to Stuck in Customs.
When Trey announced an iPhone photo app — 100 Cameras in 1 — I took notice.