See The 8 Best Phone Camera Lenses on Ezvid Wiki ►►
Fact #1. Competition is fierce. In the last few years prices have plummeted. At the same time quality has skyrocketed. Some adapters that used to cost over $100 can now be bought for much less. Plus, there are more varied options. That's all great for consumers.
Fact #2. Optical zoom is better than digital zoom. When you pinch to zoom on cameras you get digital zoom. That means there is no change in what the camera sees. It just crops the image in real time. That's why the further you zoom in, the choppier it looks. Optical zoom refracts the light before it gets converted into an image. That allows you to zoom without losing any quality.
Fact #3. Lenses predate cameras by a millenia. Their first two uses are still common today. One was to magnify things. Back when all text was written by hand, this was pretty important. The monks doing the writing weren't going to have keen eyes forever. The second was for starting fires. Kids with a magnifying glass can tell you about that.
Fact #4. The three most common options will hold over most casual photographers. These are the wide-angle, the telephoto, and the macro lens. You use the first if you want to capture more area than the phone will normally. The second is a way to zoom in even farther. That will help with getting up close, or shooting from far away. The third is for focusing up close. If you want to take a picture with incredible detail, that's your best bet.
Fact #5. Quality cameras might have been the iPhone's most revolutionary achievement. Cell phones had been around for some time. There were even plenty of smartphones before it. Apple brought standardization to that market. But they also emphasized creativity.