Originally posted by Brisboy Phone cameras have come a long way and can do some amazing things.
One thing he probably won't talk about is price. I just picked up a K-5 which is an incredibly capable imaging machine for AU$500. How many excellent lenses could I equip myself with for the difference between that and a new iphone? A quick search suggests another $700-1000 easily to spend in lenses. Meanwhile, my $150 phone is fine as a phone and portable internet device etc. and is cheap enough I don't have to worry about insuring it.
So the pics look great on a phone or a tablet: Cool. And that's important, because it means a great result has been achieved.
But!
The reality is photography is about capturing light at a moment(s) in time.
The bigger the capture surface (film/sensor) the more light per image can be captured per unit of time. It's just physics.
So the theory goes that a huge aperture lense can let more light through in the same period of time as a smaller aperture. More light means a better image.
This is why a pro sports photographer has a huge physical lens, with a massive front element, even though it might only be a 70-200mm lens. The more light they can get per unit of time the better the shot: And for sports shots to be clear, you need super fast shutters... so with a smaller aperture, the shot is dark, blurry, noisy. With a huge aperture lens the image is bright, clear, sharp, even though the shutter speed is super short.
That can't be done with an iPhone. It's just physics.
Do we see the pro photographers with iPhones??? Is the tour-de france filmed from a scooter with an iPhone? Do current wedding photographers use iPhones???
No of course not.
No doubt they CAN get good shots, but a proper, large sensor APS-C/Full Frame or medium format camera can achieve much better results much easier, without as much 'luck' being involved.
(and let's not even get started on the bokeh thing and why smart phones need 2 or more sensors to imitate bokeh with fancy processing: Only a large aperture can truly achieve that)
Perhaps, if your friend is interested in what we mean, get him to watch the Jarod Polin nikon p1000 video on YT. It's practically a phone sensor with a crazy lens, but he shows side by side, how even though the P1000 takes a great shot, it's never, ever going to match his pro setup in terms of pure image quality.