today Natural light art study abroad Natural light for everyone to study in popular science photography "regional exposure method"? Doesn't it sound boring, with a feeling of unknowingly fierce? In fact, the so-called photography professional area exposure is a concept that we all know how to operate but do not understand the principle, and it is very, very, very high-end. After understanding it, the door of the photography world has opened at least one big crack. get ready Art study abroad to apply for photography And are preparing Collection of Photography Art Studied Abroad This article is very practical!

Sources of photography majors studying abroad

"The so-called area", Ansel Adams, the ancestor of photography, divided the hue and gray scale into 10 levels, like this:

　　 The study area of photography major is shown in the photos, roughly as follows:

Photography professional exposure area 18% Gray:

Please Art study abroad to apply for photography Pay attention to the fifth area, which is called "medium gray" or "18% gray". The perfect exposure area is the fifth area. To put it simply: the picture will not be too bright or too dark. The positive and good exposure area is the fifth area of 18% gray.

The image in or near the fifth area is the perfect exposure range and the reference brightness for the camera to measure light. Move left in Zone 5, and the picture is getting darker and darker. It is too close to Zone 0, and it is basically dark. Being invisible is commonly known as "underexposure"; As you move to the right in Zone 5, the picture becomes brighter and brighter. If you are too close to Zone 10, the titanium alloy dog's eyes will be blinded by natural light, which is commonly known as "overexposure".

Generally, the areas that can be presented by the camera are generally 2-8 areas. If they are too bright or too dark, they will lose details and become bare color blocks. The following figure shows the "exposure area/zone system" in detail.

Training for photography major overseas works collection:

Just now we have introduced 18% gray, which is the benchmark brightness for the camera to measure light. What does this mean? Everyone is preparing Photography professional art overseas works collection training Pay attention to the children's shoes. Next, the natural light will be demonstrated for you. This is Natural light art study abroad As you can see, there is a black book.

Now when the natural light focuses on the black and deeper notebook, the camera will automatically place the notebook in the fifth area, which is 18% gray.

You can also see that at this time, the desktop seems to have become a master, emitting strange light. Why? Roughly estimate that in the case of naked eye imaging, the black book should be in the second area, and the color of the desktop should be in the seventh area. The difference between the table and the book should be 5-6 areas. As shown in the figure:

When we focus on the notebook, the notebook is placed in the fifth area by the camera, and the table moves from the seventh area to the tenth area. As shown in the figure:

Because the color of the notebook was corrected to 18% gray area 5, and the desktop went to area 10, the desk that had been devastated by wind and frost in the world suddenly turned white to light and suddenly became immortal. In addition, the ability of human eyes and cameras to capture images is very different.

But if you want to focus on the notebook! What should we do if we want to highlight the book and not make the table perfect? First of all, natural light would like to ask if you are preparing Collection of Photography Studied Abroad Why is the table white and shiny? Is it because there is too much light and shade difference between the desk and the notebook?

In Scheme 1, the simplest is to change the gap so that even if the notebook is in Zone 5, the desktop will not be in Zone 10. The way to change it is to add light sources to the dark part (notebook) and physically change the area where the notebook is located.

So how to operate when the gap between the two remains the same? Since the difference remains the same, it is necessary to change other parameters. For digital, the overall brightness can be reduced. However, when the overall brightness decreases, the black book will be even darker, and the details will still be lost, like this:

At this time, we need to mention another concept, a very cool word: high dynamic range image/High Dynamic Range. Never heard of it? I don't know what it is? So, friends! HDR, are you familiar?

The iPhone has this function. The principle is to expose the same scene three times or even more, collect the light, dark and middle details respectively, and finally synthesize them to generate a picture covering all details. This is a sketch map found by natural light on the Internet. The top three pictures are exposed by referring to the light, middle and dark parts respectively, and the left side of the bottom row, It is HDR live shot; On the right, it was repaired later.

Now let's use the iPhone to demonstrate the natural light. First, turn on the HDR mode and focus on the black book. The preview image is still like this. The table is white and there is no detail:

However, the photos taken out witness the miraculous moment!! The details of the notebook and the desktop are finally presented at the same time! The charging cable can be seen!

Nowadays, there are many landscape photographers who can use HDR to get the most perfect pictures. In the early film era, without HDR technology, what was it? It is necessary to mention forced impact, that is, downshifting exposure, to improve tolerance to capture more details.

I won't talk about natural light today. If you are interested, you can send a private letter about natural light Foreign art colleges, art study application majors, art study collection Etc. Finally, some suggestions Photography major of art study abroad Better institutions: New York Institute of Visual Arts (Good commercial photography, scenery, documentary and fashion) Parsons School of Design 、 Central Saint Martin College of Art and Design wait.

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