I think cellphone cameras can be good when couple conditions are met: - mid range focus length - normal, good lighting conditions (for example, no huge dynami

I think cellphone cameras can be good when couple conditions are met: - mid range focus length - normal, good lighting conditions (for example, no huge dynamic range where you have to be able to choose part of dynamic range you are working with) - fast exposures in good lighting - static targets or slowly moving humans - conditions where you can't or won't take large camera I use my full frame for things that can't be reliably or at all captured with smartphone: - dramatic, wide shots, or super sharp telephoto. It is not possible to replicate extreme wide shots or super sharp telephoto (mine is 70-200 f2.8 VR), - isolate specific targets with shallow focus depth (cellphones are only good at isolating human faces because that's what algorithms are trained) - smartphones are useless in dark conditions -- and not just because bad image quality but also because they can't focus and because you have to stare at the screen which blinds you - I can work with extreme dynamic range (think dark church with one ray of sunlight lighting couple people). Smartphones can try to guess what you are doing but what if their guess isn't what you want? - framing lots of photos in short succession -- I use full manual mode and can reliably frame lots of interesting photos in short succession (think a wedding) which the smartphone isn't really built for. With DSLR I can spot interesting target, fix focus point, frame and shoot every second or two. - I can track moving targets and not just humans - I can shoot wide open in good light to get shallow depth of field, using ND filters - I can use polarizing filters to get dramatic sky or crystal clear water - I can trigger additional fill lights to get nice pictures in adverse conditions like shooting into sun I will say one more thing. People are drowning in smartphone-made photos. By choosing full frame camera I can make photos that instantly pop up and are interesting to the viewer exactly because they have some uncommon aspect (like extremely wide shot). I don't think DSLRs are anywhere close to death. There are some aspects of photos that are not possible to replicate due to physics and geometry that will always be tempting for photographers to use to make their photos interesting.