I think it all depends on you: Where do you want to take your photography?
Note on the term “image quality”. This tends to be a quantitative term that reflect sensor signal-to-noise ratio, dynamic range (how many stops can a sensor cover at base ISO), etc. It doesn’t tend to refer to the subjective “do I personally like the picture” sorts of statements
🙂.
iPhones, etc: There are lots of people who make great images on their iPhone or similar (
@akash.nu in this forum, for example). If you operate in the 13-50mm range a lot, post to social media or are otherwise web-based, don’t specifically want to carry a phone and a separate camera, these work great. All cameras do “computational photography” at different stages - they’re digital, after all. Phones have very small sensors and plastic lenses so there’s a lot of algorithmic work to handle noise reduction at capture or other small sensor challenges, lens challenges such as adding bokeh, shallow depth-of-field, and the like. They tend to do a very good job. Depending on the camera app, as has been pointed out, you can control some of the exposure settings. Obviously video is a strong part of a phone offering as well. Decent weather sealing.
Point-and-shoots: Examples are the Sony cameras mentioned above and plenty of others. You tend to get larger sensors, nicer lenses with actual glass, a wider range of focal lengths, more straight-forward controls over exposure settings if you choose. Things like bokeh and depth-of-field tend to be more a function of the glass and sensor relationship rather than algorithmic. You might be able to do more in the realm of long exposures, depending on the camera. For example, I rate my Fuji x100f as point-and-shoot, and it has ND filter capabilities for certain kinds of motion blur effects and long-ish exposure. Decent video. Depending on manufacturer, can have decent weather sealing.
DSLR/Mirrorless interchangeable lens cameras. Often the best sensors and best glass. Best measurable IQ. More expensive (although top line iPhones are nothing to sneeze at cost-wise), but much more control. From decent to fantastic video, if that’s your thing. Weather sealing.
So the answer is, it depends
🙂.