The ultimate camera bag?

According to Lowepro's latest tweet most photographers have 5 bags for different uses!

So is there such thing as the perfect photography bag?

For anyone out there who thinks they know what would make the 'ultimate photography bag' - Kata is running a competition called Dream Bag Challenge where you can do exactly that and the winner has their bag hand built by Kata plus wins a professional photo kit worth $5000

www.dreambagchallenge.com