What do you mean by fake photos of girls?

First, whether it is a fake photo depends on the purpose:

If it is a news documentary photo, the principle of Photoshop processing is that pixels cannot move, and the adjustment of saturation and hue is limited, which will be introduced in detail later.

If it is a creative photo, such as a creative business photo of vision china and a photo of 500PX, the above principles don't matter, and it doesn't matter how to synthesize and adjust it later. For example, this photo, Sydney Opera House, Oriental Pearl and so on. Appear in a harbor, which is obviously contrary to reality. But as a bank card advertisement, the wonderful bays all over the world have dried up, which accords with the meaning of the problem. Only a fool would accuse the author:

There is an inappropriate metaphor. If a person takes a photo of his ID card, he must not show his ears with heavy makeup. But if a girl takes a selfie in a circle of friends, snake face and giraffe eyes are not illegal, and no one will accuse her. Of course, if you overdo it, some people will scoff.

The following discussion focuses on news documentary photos:

"PS" is a general term for various adjustments to Photoshop software on the network, which mainly includes two directions:

Second, adjust the color:

Adjust the white balance, color, brightness, contrast, saturation and hue to restore or exaggerate the original color.

For example. The picture below shows an example of Lightroom matching colors for photos. On the right is the original in RAW format after color adjustment, and on the left is the original before color adjustment. The photo is dark and the details of the trunk are missing. I can see the details of the trunk at the scene. The whole photo is lightened 1.35, the highlight is lightened -83, the white level is lightened -64, the dark details are lightened 97 (this is the advantage of Nikon D850 and Sony A series), and the black level is lightened 23. Saturation slightly increased 17%.

The adjusted photos are in line with the scene feelings of blue sky, white clouds and pink peach blossoms under my optimistic attitude:

Of course, the popularity of photography circle is cold now, and many young photographers will evaluate my bright and saturated style as "old mage"

Let's not quarrel about this. Think about it when you are my age.

But I believe that a charming and saturated photo can attract more tourists and photographers to see peach blossoms here. This is the purpose of my color matching.

It is hooliganism to put aside the purpose and stand on your own position and say that others are correct in the later period.

I quite agree with Teacher Sui Xiaolong's point of view in the following discussion:

To put it simply, in landscape photography, I accept Ps, but there is a bottom line for its use. Why do I support Ps? In fact, it is very simple, just like people choose different brands and models of movies in the movie era. At that time, it was to pursue the unique "taste" of different movies. This is actually a Ps provided by the manufacturer, but there are not so many choices now, so I support Ps in most cases. Where is the bottom line? Ps is not accepted in scientific research, survey, construction and other fields. However, the landscape photography discussed in this topic will have the direction of artistic shooting, so there is no problem from this perspective.

20 13 Many photographers and photography theorists have discussed these issues.

Planning if Adams didn't shoot the moon-"PS in Landscape Photography"-China shoots official website-powered by Supreme.

Pick out a few paragraphs:

Teacher Liu Kuanxin, as the technical judge of major film competitions in China, has a special discussion on "fake photos" in the book "Core Concepts and Key Technologies of Digital Images". News photography and documentary competition, the following operations may be sentenced to "fake photos":

Definition of original objective photo: A photo taken with a camera, which does not design, direct or interfere with the shooting scene and shooting object by actions, language, props, etc., and does not change the normal optical imaging of photography, and has photographic imaging texture and perspective characteristics.

Definition of real photos: photos are displayed through normal development, negative and positive films and digital technology, and the contrast, tone and color are restored and adjusted for the purpose of improving image quality. Pixels and photo elements shall not be changed or moved by adding, deleting, covering, deforming, etc., so as to maintain the true transmission of the content and information of the original photo, and any modification that leads to vague understanding, misleading and distortion of the photo content shall not be made.

There are three types of using digital technology to make fake photos.

First, fraud before filming. This kind of fraud is to design stories, manipulate and set props, shoot nonexistent original scenes or fabricate facts, or even completely fabricate facts to create photos with deceptive plots and behaviors. There are also physical instruments to change the normal imaging of the lens and take pictures of scenes that cannot be seen at the scene. In order to prove that there is no cheating, the original image is provided for identification without any post-processing of the photo. If anyone questions it, they insist that there is no fraud, and the photo was taken at one time, which is proved by the "original photo". The photo of the South China Tiger is a typical pre-fraud.

This photo is not a fake photo in the late PS sense.

Remarks: In the lecture given by teacher Liu Kuanxin at the 20 10 Pingyao Photography Festival, an elder sister asked, "I took the second exposure, first the sun in the west, and then the scenery in the north. Some people say that I am a fake photo. Is Teacher Liu Kuanxin right? " Teacher Liu Kuanxin said that you didn't cheat in the late stage, but cheated in the early stage.

Second, post-production fraud. In post-production, moving pixels, digging east and filling west, making and synthesizing elements that appear on the spot, and transmitting false information. For example, the photos of Tibetan antelopes crossing railway bridges and pigeons in the square on the Qinghai-Tibet Plateau belong to this kind of fraud.

Third, the post-production of fixed pixels is fraudulent. It's real in the early stage, and it doesn't move pixels in the later stage. It only changes the local color and lightness, which makes the information expression of the photo very different from the factual content. It's also a fake photo. This kind of photo is very concealed, and it is quite difficult to judge and identify it.

In view of the above three kinds of fraud, it is necessary to establish and quantify the standards for the post-adjustment and production of documentary photography digital, so that the author can have standards to follow when improving his works, and also make the evaluation and appraisal scientific, quantitative and fair, with clear rules to follow.

Specific quantitative criteria:

When using image software to retouch news documentary photos, the following seven adjustments will not affect the real information conveyed by the original photos, so they are not considered as changing the original images. No other changes are allowed. The specific content of quantification is as follows.

1. Crops the picture and cuts a part of it.

2. Color pictures are changed into black-and-white pictures, and color information is changed into lightness information, which is similar to using black-and-white film photography.

3. Use software repair tools to remove dust spots on photosensitive elements, similar to trimming spots on traditional photos with a brush. 4. Brighten or darken the whole image, similar to full exposure and underexposure in traditional darkroom technology. 5. Lighten or darken the image locally, similar to the local exposure, underexposure or thinning process in the traditional darkroom negative film technology. The amplitude of light or dark can't reach the effect of reverse processing. For example, turn black into white, and vice versa.

6. Slight color adjustment of the restore attribute. On the premise of correctly restoring the balance of black, white and gray, the hue adjustment should not exceed 20. Like changing someone's yellow clothes into blue ones.

7. Software splicing is allowed, but supporting certificates of the original film should be provided, and the content of the original film has not been deleted or added.

Third, move pixels:

Delete, add, stretch, deform, combine more than two photo elements, etc. , referred to as "moving pixels". The modern photo of "Tibetan antelope crossing the Qinghai-Tibet Railway" is a case of composite photos.

Because of this fake photo of Zhang Hecheng, the author was punished.

For details, please refer to the discussion post:

Liu Weiqiang Award-winning Tibetan Antelope Photos Suspected of Fake Archive Theme

For example, ansel adams's The Moon and the Half Dome, in which the moon plays a vital role in composition:

If this photo is the winning work of a domestic photo contest, then I will doubt the authenticity of the moon 99.999%. In recent years, because Photoshop has entered ordinary people's computers, a common trick used by domestic photographers is to add the moon, eagle, bird and plane to the blank space.

To tell the truth, if Adams really faked it, it would be really difficult to solve the case!

However, with the rapid development of modern science and technology, I really admire Adams more!

Because Joe, the inventor of 20 17 professional Planit app, planned the same perspective in advance with mobile phone software, and also proved the authenticity and specific shooting date of Adams photos:

Three years ago, when I first started designing the sun and moon search function in PlanIt, I realized the power of this function. So I took this photo of Adams as an example to infer the time and place of shooting. Fortunately, 1960 didn't stick to the moon in fashion. I can at least make sure that the position of the moon is accurate, so I can judge that this photo was taken at about 4 o'clock on February 28th, 960/kloc-0. Then I searched for a hundred years after 1960, and found that on February 29, 20 17, the position and size of the moon were almost the same as 1960. In other words, I have been waiting for this day for three years. The following is a comparison of the moon. The following values are the elevation angle of the moon, the azimuth angle of the moon, the percentage of the moon and the elevation angle of the sun. These values are very close, the closest is 100 year.

After a lapse of 57 years, Mr. Qiao Wenjie perfectly recreated the scene taken by Adams.

Similarly, my favorite photo is the moon, which was taken on the basis of a very accidental meeting in Nangarbawa:

Similarly, I cherish the photos I took of the old stone man at sunrise. Such photos are now foggy every day, and it is already difficult to take them:

If it's post-synthesis, it's like combining your photos with Maggie Cheung. Cheap and fake.

It's a completely different experience to shoot with Maggie Cheung.

If it is not true, it is a matter of minutes to synthesize a moon. Therefore, in the photos taken by Teacher Liu Weiqiang in Tibet, a large number of moons were added:

Teacher Liu Weiqiang took photos. If we can catch the divergence of fire, the moon must be burnt.

Liu Weiqiang's works, we can personally experience.

At the beginning of 20 18, when the yellow moon arrived, a large number of unusually large moon photos were synthesized/exposed twice:

As a astrophotography fan, I quite agree with several articles compiled by Pang:

CCTV news, it doesn't matter if you don't know the moon, but it's wrong for you to teach everyone to fake.

How many careless media editors and ugly pretenders did a total lunar eclipse blow up?

Some people will argue that the second exposure is not a "fake photo". In fact, in news photography and documentary competitions, the second exposure is a "fake photo" because it changes the reality.

Common fake photos from the perspective of news documentaries include:

1, Shan:

The original picture is such a mountain peak:

Nowadays, it is popular to shorten the left-right ratio in the later period and turn the mountain peak into a steep one:

Such a mountain peak is steep and unusual, but it is unrealistic. Of course, if it is not a documentary news photo, it is an artistic creation, and there is nothing wrong with it. If you can show photos and make a statement online, it will be more cordial.

2, chaotic P galaxy:

Of course, some photos of the masters were exposed to the chaos of the Milky Way, and the Milky Way in late summer was synthesized on the wrong landscape. Cheat if you can. This is not very kind.

In this regard, Weibo's "Star Whisperer" is a fighter for counterfeiting.

Star Whisperer Always in the Sky —— Galaxy Fraud and Popular Science in Star Field Photography —— The Altar of Great Photographers

For example, this photo won a prize of 80,000 yuan:

In fact, sometimes when I deal with the photos taken under the Milky Way, I will replace the photos taken in the same place with meteors or bright Milky Way, but these photos are all taken by myself or friends. No problem.