Modern DSLRs can do everything for you in automatic modes but letting your camera take control makes for average photos and means you will never learn how to improve. One piece of knowledge that's been lost since cameras took over choosing the settings is that on a sunny day the general rule is to use f16 and a matching iso and shutter speed. I.e. 100 iso and 1/100 shutter speed. Give it a try in manual mode oin a bright day!
Dan Idoine Photography