if your photoshop level is god skill, using RM 1000 phone camera will beat dslr.

this is because photo manipulation plays an important role in the END RESULT.

Images below are taken with sub RM 1,000 smartphone which is the ASUS Zenfone 3 Max. Yes, a phone, not a camera.

And these photos (of course with some post-processing) were submitted to Shutterstock, well known stock photo site with strict QC.

Only images with sufficient image quality and commercial value (composition most) will be accepted.

Manual exposure? Nope, all these images were taken on AUTO (camera default).

Will I use smartphone camera for professional purpose? No, I won't BUT the above just tells you that IF you know your gear and work within its limitations and IF you know your craft - you can produce good stuff even with your smartphone camera.

No need to argue so much, if you think a DSLR alone or a big sensor camera alone is enough to get the job done - go ahead, try submitting your photos to Shutterstock.

Also if you think smartphones are so good - you're dreaming, no way can it match DSLR. You put on Facebook sure looks nice, everything small and whatever but smartphones are VERY limited. Even with the best of my skill and ability I wouldn't bank on smartphone to get the job done unless there's really no other option.

Focus and noise can be countered by making picture smaller. Some also rejected if the shots are way too common like flowers (unless outstanding). But other than that it is not a good indicator to tell good from bad. Heard that if you submit the failed shot at another time, it will get accespted by different reviewers.