Yes of course. There are different sensor sizes in cameras, roughly speaking you have 2 different sizes that are popular (there are others): Full-frame and Cro

Yes of course. There are different sensor sizes in cameras, roughly speaking you have 2 different sizes that are popular (there are others): Full-frame and Cropped sensor. Full frame cameras (like the ones in the video) will let in much more light than cropped sensors. A smartphone sensor is smaller than even the cropped sensor size. The more light the sensor can capture the faster it can take a photograph, the better the bokeh it produces will be. Mega-pixels are not necessarily related to sensor size but to sensor density. A bigger sensor will still capture significantly more light and so images will come out much sharper in the same amount of time. Also, with cameras you can modify all the parameters required to take a picture (mainly aperture and shutter time) so you have more flexibility to take good pictures. There are two ways of letting more light into the sensor one is to simply open up the lens more (lower the `f` value) and the other is to let the sensor be exposed to light for longer (increase shutter time). Also 55mm f2.8 means is the lens, lenses have a length, a short focal length (like 11mm for example) will take very wide photos and a large focal length (85mm) will take close ups or "zoomed in" pictures. For wild life photography it's not unusual to see lenses that are like 300mm. The `f` factor is how wide the lens will open and the lower the number the more light it will let in. So for example an 11mm f1.8 will let in much more light in than an 11mm f3.5. The more light the lens lets in the faster you can take a picture and still have it be sharp. Phone cameras are extremely limited in what they can do with optics, there are many optical tricks you can implement to have different focal lengths on a phone, for example, having 3 lenses: a "zoom" one, a "wide" one and the "regular" one. But ultimately a 11mm f1.8 on a camera will be incredibly better quality than whatever a phone can accomplish in such reduce size. I hope that explains things a little better :)