The iPhone 4 is now the most popular camera on Flickr, with a caveat. More on that in a minute. The smartphone's 5-megapixel shooter has finally surpassed the Nikon D90 as the top camera on the photo hosting and sharing service. It's been a slow and steady rise for the iPhone 4 since its debut in June 2010. The cameraphone now sits above the powerhouse D90, the Canon EOS 5D Mark II, Canon EOS Digital Rebel XSi and the EOS Rebel T1i.
Not surprisingly, the iPhone 4 also dominates in the cameraphone category with its closest competitor, the iPhone 3G, a distant second. The only non-Apple product in the top five cameraphones is the Android-powered HTC Evo 4G which sits at the bottom along with the iPod touch.
This isn't the first time an iPhone has topped the Flickr popularity c
