What does the photo recoil mean in the photo? Why did you flinch?

There are two kinds of film developing processes, namely negative film developing process and negative film developing process.

Of course, film can also be divided into negative film and reverse film. However, some photographers only develop the negative according to the reverse film. For example, there is a female photographer in America who specializes in rewinding films by road. She filmed a swimming pool project. This development will lead to color cast (blue to green), which is a legitimate benefit.

As for the positive development of negative film, some black-and-white negative films can be developed and exposed twice, and finally the positive film can be obtained (reversed). On the one hand, the quality will be better, on the other hand, black and white slides will be obtained directly.

Positive and negative photograph

It is to take photos with positive film, but when developing negative film, the normal negative film is developed with C-4 1 instead of normal E-6 developer, which makes the original normal positive film become negative film, and this color film base can not get normal color, but becomes extremely gorgeous color expression. Its biggest feature is that the picture will produce extremely bright colors, with great contrast between black and white and extremely narrow exposure latitude. It is the most difficult shooting type to control exposure among all professional wedding photography and artistic photography techniques.

Reaction and discussion of photography market

It is difficult to control the exposure of such photos, but if they are taken successfully, the pictures will be unique and eye-catching. Therefore, both the response of consumers and the evaluation of general professional photographers are quite high. It's just that there are not many photographers who can take such photos well at present. After all, unlike the 160-degree negative used in general professional portrait photography, the exposure latitude is large and the contrast is low, so it is easy to shoot soft portraits. Moreover, in order to avoid the complexity of exposure and light ratio and prevent failure, general photographers usually stay in close-up photos of portrait formula composition types that are easier to shoot. Therefore, at present, most of these photos owned by consumers are close-up compositions, and it is difficult to have high-level works beyond this composition.

In fact, if we can use the portrait composition of landscape art type and master the skills of scene, light ratio and color planning to shoot such photos, then the color and saturation of the works can surpass the level of portrait formula composition type photos and reach the peak of portrait photography art.

Key points of shooting, technical description

1. There are two key techniques in shooting. One is the proper choice of negative film (actually positive film).

In the light environment with sufficient light source, or hope to achieve the effect of strong contrast and perfect portrait texture.

When shooting, you can use positive films with medium and low sensitivity, such as 64-degree and 100-degree, and you can

So as to obtain quite saturated and gorgeous timbre. It's just the positive exposure latitude pole of this sensitivity

Narrow, light ratio control is not careful, it will fail to expose, showing underexposed dark brown or overexposed.

Dead white.

To avoid exposure failure, or to obtain a soft contrast tone, 200 can be used.

At present, the most widely used slide on the market is the 200-degree slide, because

Its exposure latitude is wide, and it is a kind of film with good shooting effect and soft contrast. It should also be noted that,

Some brands of positive films will be biased towards extreme yellow tones or foreign colors after this abnormal treatment.

Red, bright green and other colors, of course, this is also related to the color temperature when taking pictures. In short, photographers should follow their own

Adjust according to your own preferences to get the ideal color.

2. The second is the control of light ratio. When taking this type of photo, it is necessary to calculate the light ratio of the whole picture perfectly, that is, the contrast between the bright part and the dark part should not exceed three levels, otherwise it will form the extremely black or white Gao Fancha phenomenon and make the picture lose its halftone color. Especially when shooting a white dress in wedding photography, if the light is not properly controlled, only dead white will appear, and there is no intermediate tone. It is best to open one more file for the overall negative exposure, so that the most saturated color can be obtained when developing photos. The most taboo is underexposure, which will make the photos form ugly deep earthy tones.

3. In the post-processing, use printing soft focus as little as possible, otherwise it is easy to form black hair on the face of the portrait and penetrate into the white part, which becomes a very strange phenomenon. This is an inherent soft focus phenomenon in general post-processing, but it is more prominent in the photos of negative film development.

This effect is actually obtained by mistake, because the operator or user mistakenly developed the positive film into a negative film, which led to this effect. Later it became a common way to pursue special effects.

Because the positive film can also become negative in the process of negative film, the color saturation is high and the contrast is high. The positive film has no negative film with color mask for color correction, so it can't be restored to normal color photos after printing, but its exaggerated color is a good artistic style. So now many photographers deliberately create this effect.

In the field of digital cameras, it is impossible to get the negative effect of positive film in this way, but another tool-Photoshop can also achieve this effect. It was first modulated by netizens in Taiwan Province Province. This paper mainly uses PHOTOSHOP to adjust the color and contrast to simulate the positive development effect of film camera. Positive films are mostly used for landscape photos with particularly bright colors, many kinds of colors or large boundaries.

The effect of positive film lies in bright colors and high contrast, which often gives people a strong visual impact.

In fact, the secret of this modulation is to adjust the color levels of red, green and blue channels respectively. After copying the original image to the layer, adjust the color levels of the three-color channels of the new layer respectively. After that, just adjust the contrast and brightness.

Treatment process:

1. Open a picture. On the channel control panel, select the blue channel, drop down the image menu, use the application image command, select reverse, and overlay the mixed mode with positive film. The opacity is 50%, and confirm.

2. Select the green channel and repeat the above operation, but set the opacity to 20% and confirm.

3. Select the red channel, or use the Apply Image command to set the blending mode to color deepening, and confirm without setting anything else.

4。 Adjust the levels of the light and dark parts of the changed blue, green, and red channels using the color scale indicator.

Blue-210.76151

Green -46 1.37 22 1

Red -5 1 1.28 255

5. After closing the channel, adjust-brightness contrast brightness -3 and contrast+16.

Select Image-Adjust-Tone/Saturation-Adjust the saturation to+17 and confirm.