The accuracy of the autofocus may be important when you have to take lots of small details - and want to know what the best camera for jewelry photography is. An autofocus which is correct and fast acts well particularly when you are working on hand or when you are changing the composition of the jewellery, according to Visuals Clipping, though autofocus is nice, most jewellery shots are better using manual focus (particularly in macro work) so that the smallest detail will be sharp. Their blog recommends the use of autofocus features with manual control in cases where details mattered.