Bulked-up body

The A550 is heavier and bulkier than its lower-end brethren are--though it's lighter than the competition are--but oddly doesn't make as good use of space and is less streamlined for shooting. Like many dSLRs that have to remain backwardly compatible with older lenses, the A550 has a Manual/autofocus switch on the body that you confusingly have to remember to match with the switch on the lens.