A DSLR will usually give you higher-quality photos with more detail and control, while a good phone camera can still do the job if you have the right lighting and angle. Many authors and designers actually use smartphone shots because they are quick and convenient, then enhance them during editing.

When it comes to book cover graphic design, the real difference comes after the photo is taken. Editing, color balance, and how the image is placed on the cover matter more than the camera itself. If the design is done well, readers won’t notice whether the photo was taken with a DSLR or a phone.