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Well, you know, Full Frame sensor, high quality optics, tripod, filters, post-production.. that's all makes sense and gives impact for a higher quality. But the cameras in modern smartphones are getting better and better. Personally my opinion - it is better to take a photo with a smartphone, than to take nothing :) And it is really possible to end with pretty cool quality photo as a result (I don't hesitate to use iphone if camera is not with me)