I tried a new function of 'port trade mode' of 'iPhone XS' and 'iPhone XS Max' that can easily adjust background blur even after taking a picture

At Apple's new model release event held on September 13, 2018, "Enhancement of camera function" is mentioned as a big sale of " iPhone XS / XS Max " released on September 21, 2018 It was. In particular, in the portrait mode of iPhone XS / XS Max, it is said that the function which can freely adjust "blur" of the background of the photograph is added freely. I tried to see what the function of actually adjusting the background blur in the portrait mode of iPhone XS / XS Max actually is.

iPhone XS - Camera - Apple (Japan)
https://www.apple.com/jp/iphone-xs/cameras/

iPhone X · iPhone XS · iPhone XS Max available. iPhone XS Max is one size larger, but there is almost no difference in appearance other than that.

First of all, in order to ascertain the performance of the camera itself, the flowers that were blooming in the flower bed in the neighborhood are blurred from the "photo" mode with the iPhone X camera.

Then shoot the same flower with the same composition on iPhone XS. Impression that coloring improves slightly compared with iPhone X, contrast between red and green is softer and more natural than iPhone X.

What I took with iPhone XS Max is almost the same as iPhone XS. The iPhone XS and iPhone XS Max are nearly identical in specifications other than the display size, and the performance of the camera is also the same, so I am convinced of this result.

I took another flower blooming near the flower bed by iPhone X.

And with the same composition, same thing shot with iPhone XS is below. The green color of the leaves is bright, the pink color is bright, it has become more natural and soft feeling. I actually shot and I felt that the speed of focusing and brightness adjustment was slightly faster than iPhone X.

In iPhone with dual camera such as iPhone X · iPhone 8 Plus · iPhone 7 Plus, the portrait mode is installed in the camera, shoot a picture emphasizing the person or thing in front while blurring the background feeling good can do. For example, the portrait photograph taken with iPhone X is below.

Pictures taken in portrait mode can be adjusted in addition to the same image editing as ordinary pictures, even after taking a picture.

iPhone XS / iPhone XS Max is equipped with the latest generation chip "A12 Bionic". "A12 Bionic" is much faster than "A11 Bionic" mounted on iPhone X which is the previous model, and it has 8 core neural engine which can do 5 trillion machine learning processing per second. Therefore, more complicated image processing became possible, and it became possible to change not only lighting but also aperture value after shooting.

The following image shows iPhone XS Max shooting using portrait mode.

First, select a portrait photo from the "Photos" application and tap "Edit".

A slide that can change the aperture value (f) has been added under the portrait edit screen.

The smaller the numerical value of f, the shallower the " depth of field " which is the range of the focusing distance, the more the background and the one in front will blur. The following image is blurred to the extent that letters written in the background calendar can not be read at all when adjusting the aperture value to the minimum 1.4.

Increasing it up to f = 4.5 makes the background a little sharper.

Up to f = 16, it is clear that it is possible to read the characters of the calendar in the background without problems.

Changing the aperture value with the actual camera greatly affects "brightness of the picture", but in the portrait mode of iPhone XS / iPhone XS Max, it is a parameter that affects "background blur" to the last. By setting blur freely, wider photo expression is possible.

The iPhone XS / iPhone XS Max does not change significantly from the iPhone X to the appearance, but it can be said that the camera function has been strengthened certainly. Especially even for beginners of photographs, it is possible to capture an impressive portrait picture by the aperture value adjustment function of portrait mode, and feeling that anyone can more easily photograph full-fledged photographs It was.