Competition in the mobile phone industry is white hot now. As more and more manufacturers have entered the market, simply having an excellent configuration, good benchmarking results, and extremely high price-performance ratios are no longer enough to make a phone stand out.
So, what can still be added to high-end smartphones? To me, camera technology is a very important thing. And, one-by-one, in the past two years, manufacturers have begun making dual-lens phones. So, what's so special about dual-lens phones? Isn't it just putting two lenses beside each other? Today, I will be discussing dual-lens blur effects and the wide aperture function.
Readers who've done some research into SLR cameras probably already know that they can detect distances between objects seen through the lens and can make different changes to the depth of field by controlling the aperture size.
It's commonly said that the aperture is like a window. The wider you open the window, the more light can come in and the photos you take will be brighter.
A wide aperture refers to adjusting the aperture to a very small number. As the number gets smaller, the aperture grows wider! And on mobile phones, wide aperture is the most important way to make the subject in focus to stand out from the background. It is often used to take photos in environments that have a shallow depth of field like portrait and scenic photography.
The image below shows the results when there is a wide aperture and shallow depth of field. The objects in the background are blurred and the little flower in the center of focus stands out. The image on the right shows the results when there is a small aperture and a deeper depth of field. The subject in the center of focus and the background are both clear.
The multi-level effect seen with a clear focal point and a blurred background is achieved by putting what you want to focus on in the focal point and letting what is at other distances in the scene be out of the center of focus.
Look at the next image. The focal point of the picture is on the red book bag in the lower right corner. The scene in the distance and to the sides is blurred accordingly.
I shall continue later regarding this topic
So, what can still be added to high-end smartphones? To me, camera technology is a very important thing. And, one-by-one, in the past two years, manufacturers have begun making dual-lens phones. So, what's so special about dual-lens phones? Isn't it just putting two lenses beside each other? Today, I will be discussing dual-lens blur effects and the wide aperture function.
Readers who've done some research into SLR cameras probably already know that they can detect distances between objects seen through the lens and can make different changes to the depth of field by controlling the aperture size.
It's commonly said that the aperture is like a window. The wider you open the window, the more light can come in and the photos you take will be brighter.
A wide aperture refers to adjusting the aperture to a very small number. As the number gets smaller, the aperture grows wider! And on mobile phones, wide aperture is the most important way to make the subject in focus to stand out from the background. It is often used to take photos in environments that have a shallow depth of field like portrait and scenic photography.
The image below shows the results when there is a wide aperture and shallow depth of field. The objects in the background are blurred and the little flower in the center of focus stands out. The image on the right shows the results when there is a small aperture and a deeper depth of field. The subject in the center of focus and the background are both clear.
The multi-level effect seen with a clear focal point and a blurred background is achieved by putting what you want to focus on in the focal point and letting what is at other distances in the scene be out of the center of focus.
Look at the next image. The focal point of the picture is on the red book bag in the lower right corner. The scene in the distance and to the sides is blurred accordingly.
I shall continue later regarding this topic
