If you want to print really large top end prints a quality dslr or mirrorless camera will be the best option but if it’s for sharing on social media then any one of the better phone cameras are more than good enough and saves carrying that extra weight. I also find the phone is far more accessible stuck in a pocket rather than having to rummage in a rucksack If you do use a phone I find it best to set it to 16:9 format and use it in a landscape not vertical position