Mobile phone shooting: Sunny day (yotei beetle flower bud)
Some film friends sent it the other day (talking about photography, some film friends left a message saying that mobile phone shooting is really difficult to blur the background, is this so?). The message in the article said: Use the large aperture of the mobile phone to blur the background.
I replied: (Mobile phone) large aperture mode, in close-up shooting, it is easy to appear between the sharp surface and the blurred surface of the obvious edge line, which is different from in the non-large aperture mode, by controlling the shooting distance to achieve the effect of blurred bokeh. This problem was noticed a long time ago, and I wanted to find an opportunity to talk about it.
Mobile phone shooting, cannon fighting flowers
Below, we will take the legend of the real shot to see what is the difference between the shooting of the mobile phone's large aperture mode and the regular mode, in the blurred bokeh effect and the shape of the depth of field.
Shoot phones: Honor 10.
Rear lens regular mode with a maximum aperture of f/1.8.
Rear lens large aperture mode with a maximum aperture of f/0.95
In large-aperture mode, there is a hint: it is recommended that the camera and the subject do not exceed 2 meters
1, under the normal shooting distance, the blur bokeh effect and depth of field of the large aperture are characterized by: the blur bokeh effect is good, but it has a softening effect on the subject (focus). As shown in the following legend. The legend was taken in February 2019, and the shooting distance is close to the close-up (above the waist, bust) scene.
From the above legend, we can clearly see that the picture on the left, shooting in large aperture (f/0.95) mode, the background of the picture is blurred and bokeh, the bokeh effect is still good. It can play the effect of detaching the subject from the background. However, if the subject imaging under the large aperture (f/0.95) and the general mode (f/1.8), the subject imaging is compared (red circle part), it can be easily seen that compared to the conventional mode shooting, the subject is "softened" in the shooting of the large aperture mode.
Cell phone shooting, Persian Mother-in-Law
Let's look at the large aperture of the mobile phone, in the shooting distance of the medium and close-up scenes, with digital zoom for 2X shooting. As shown in the legend below (taken in recent days). At the top of the guardrail column in the original drawing, because of the influence of high light illumination, the details are not too good, so the small stones in the red box are taken as the legend. From the screenshot, it can also be easily seen that in the large aperture mode, the subject is "softened" processed.
This section of the review: the mobile phone in the large aperture mode shooting, the depth of field characteristics are obvious. While the background is blurred and blurred, it also has a certain "softening" effect on the subject. This seems to be more suitable for outdoor portrait (or life photos) shooting. Just like when we shoot outdoor portraits with a camera, sometimes in order not to make the character (face) too sharp, we deliberately use a (larger) aperture to shoot. In addition to outdoor portrait shooting, I think that most other subject matter shooting is not suitable for shooting with the large aperture mode of the mobile phone. No one wants to let the subject be "softened" easily.
Mobile phone shooting, autumn
2, in the mobile phone macro (close-range) shooting, large aperture mode and regular mode, blur bokeh effect and depth of field shape comparison. As shown in the legend below, the image on the left is shot in large aperture mode. The picture on the right is shot in regular mode. Shooting distance: approx. 10cm, digital zoom: 2X.
One is the blurred bokeh effect of the distant background. From the shape of the blurred bokeh spot in the red circle in the legend, the shape and effect of the spot shot in the two modes are extremely similar. That is to say, for the background that is far away from the subject, in the bokeh effect of blurring, the difference between the two modes of shooting is not large.
Cell phone shooting, Spiny Mountain Ant
The second is the blurred bokeh effect and depth of field shape of the scene objects around the subject. We can easily see that in the film shot in regular mode (right), 5 sharp points are blurred in the film shot in large aperture mode (left). That is to say, the shooting of the two modes is different in the bokeh effect and depth of field shape of the blur bokeh.
Mobile phone shooting, through the spring grass
One thing to mention is that macro (close-range) shooting in large aperture mode does not "soften" the sharpness of the subject. This is different from shooting in the large aperture mode (which can be compared from the schematic diagram 006 above). This may also be the reason for the use of small scenes as a sample in the instruction window of the mobile phone's large aperture mode.
2-1, macro (close-range) shooting in the large aperture mode of the mobile phone, the shape characteristics of the clear part of the depth of field in the picture. As shown in the following legend.
From the above legend, you can see that the subject is surrounded by blurred scene objects. The clear part and the blurred bokeh part are easy to form a more obvious "boundary line". In this film, the depth of field is clear and the range is similar to an oval (perhaps the AI algorithm of the mobile phone can be "motorized" according to the shape of the subject being photographed).
Cell phone shooting, tristillary cicada
I wonder if you have such a feeling. In the large aperture mode of the mobile phone, the blurred bokeh effect of macro shooting, and the "bokeh" effect of the post-production with the mobile phone picture (Snapseed) software, through the "lens blur" tool, have a sense of déjà vu in the presentation of the blurred bokeh of the picture. As shown in the following illustration,
2-2, macro (close-range) shooting in regular mode of the mobile phone, the shape characteristics of the clear part of the depth of field in the picture. As shown below and in the legend.
From the legend above, you can see that there is a (wider) clear band of faces that coincide with the subject's focal plane and run horizontally through the entire frame (between the red lines). This is the shape characteristic of macro photography in the regular mode of the mobile phone, and the clear part of the depth of field. This depth of field is not also very familiar, very camera macro lens, depth of field in macro shooting "style". As in the illustration below, the depth of field under a macro lens.
Canon 100 micro lens, depth of field for macro shooting
This section of the review: In the macro (close-range) photography of mobile phones, the mobile phone's large aperture mode and regular mode, there is no obvious difference in the background blur bokeh processing effect, and the effect is approximate. However, there is a clear difference between the blurred bokeh effect and the depth of field shape of the scene objects around the subject. In the large aperture mode of the mobile phone, the depth of field (lens) sense of macro shooting, the traces of the AI algorithm are obvious, and the picture perception is unnatural. In the regular mode of the mobile phone, the depth of field (lens) sense of macro shooting has a similar effect to that of the camera macro lens shooting, and the picture looks natural and does not violate the harmony. This is also the reason why I use the regular mode of the mobile phone in the macro (close range) shooting, in the way of "close range + digital zoom", macro shooting.
Mobile phone shooting, a curtain of dreams
(Original photography graphics, share the real photography feelings, if you have any doubts, please leave a message.) Thank you for your viewing appreciation and encouragement) Respect the original, please do not carry plagiarism.