The current generation of smart phones come with cameras powerful enough to take quality product photography in good lighting conditions. Camera phones offer limited user controls and may not depict color accurately in low light. This is a perfectly functional and cost effective option for new sellers.
Digital single-lens reflex (DSLR) cameras represent a step up from the camera phone. DSLR cameras are effective in a wider range of lighting conditions and offer advanced controls for settings like focus, aperture, and white balance.
Basic functions can be used with little instruction. Plenty of free online video tutorials are available to help users build confidence with advanced camera functions.
Brand new DSLR cameras will cost $500 and up. A wide range of affordable used models are available to suit smaller budgets.