​Basic knowledge of post-processing

An excellent photographic work is the perfect combination of early and late. So today I'm going to tell you a little bit about post processing.

I. basic knowledge of post processing

What is anaphase?

Photography post-production is a photography auxiliary technology that can subvert the early shooting. It can also be said that since the development of digital photography, canvas prints it has been gradually recognized by the majority of photographers. From the initial confusion about the post-production to the current operation to achieve a variety of operations beyond the scope of traditional photography.

What photos are easy to adjust?

Photos with low contrast, sharpness, and saturation are easier to adjust. After the camera is finished, the photo is all high, we have no room to adjust, and fine tuning is too much. And don't set the camera too high. Like camera sharpness, canvas pictures australia saturation and so on, as far as possible to adjust to the "0" stage, for post-production. Canon users often find that photos tend to be "grey", but this grey is not a bad thing. Pictures taken with Canon series cameras have the characteristics of "low contrast, low saturation and low sharpness", which on the contrary is convenient for later adjustment without excessive movement.

There is also the RAW format file, which is the original uncompressed file, beach prints australia which retains all the light information, and can be adjusted for color temperature, exposure adjustment, sharpness and other adjustments in the later stage. It is a very good image file. The important point is that it means we spend less money on high-quality lenses. For example, the Canon DPP software can correct the "peripheral light, color aberration and distortion" of lenses, so that the errors and adverse effects of lens imaging can be modified before photo adjustment. This is equivalent to buying a higher quality lens.

Second, PHOTOSHOP CS5 photo adjustment basic steps

1. Basic operation

Open image:

(a) press Ctrl+O key at the same time to pop up the browsing window from which you can select and adjust the image.

(b) find the image, click the main button of the mouse and drag it to the ps icon below the display screen. After the interface pops up automatically, move the image to the interface where the plus sign appears, and then release the left button of the mouse. Open multiple photos, and select multiple photos at the same time, such as method a and method b.

2. Close the image: press Ctrl+W or click x at the top of the image at the same time. Close multiple Ctrl+Alt+W close all documents.

3. Image clipping: when the C key is pressed, the image can be clipped. The four edges can be adjusted arbitrarily during the clipping process, and the clipping proportion can be determined by pressing the enter key. If the clipping is in accordance with the current frame proportion, hold down the Shift key and use the mouse to draw the clipping area. When the selection is completed, release the Shift key. If you are not satisfied with the clipping during the operation and need to re-clipping, press the Esc key to cancel the current operation.

4. Return to the previous step: if you are dissatisfied with the previous step, you can use the shortcut key Ctrl+Z to return. If you need to return multiple steps, use Ctrl+Alt+Z to return. Click the Z key several times to return several steps.

5. Zooming in and zooming out picture display: simultaneously press Ctrl++ to zoom in. The more times the + number is pressed, the larger the zooming will be. At the same time, press Ctrl+- to reduce. The more times the - sign is pressed, the smaller the reduction will be.

6. Moving image: space + drag the movable image. After zooming in the image, hold down the space bar and click the left mouse button to move the image to select the display area.

Three, image adjustment

1. Define black and white color of the image

In most images, the black-and-white relationship is not clear or accurate, so the image tends to be gray and the color response is not true. Therefore, the first step in image adjustment is to define the black-and-white relationship of the image. Use Ctrl+L key to open the level control interface, and the image light quantity information display control interface (similar to histogram display) will appear. There are three triangles below the light quantity information in the interface, from left to right, to adjust the image brightness relationship. The left side is adjusted by black selection button, the middle is gray, the left side is white. When defining black and white, hold Alt while mousing over the left triangle to move to the right and the image will turn white. In the process of moving, black pixels will appear in the screen, which can be seen sporadically. In the same way you would define white, hold Alt and use the right triangle of your mouse to move to the left when a few black pixels appear.

2. Image contrast adjustment

When the image is defined in black and white, the image contrast needs to be adjusted. The contrast makes the image brighter. Press Ctrl+M key at the same time, the adjustment curve interface will appear. A curve is a straight line from the bottom left to the top right. Similarly, the left side is the dark area, the right side is the light area, and the middle gray area is the middle position of the line. With the mouse point line under the area to pull down, the image will deepen the dark color. Use the mouse to pull up the middle and upper areas of the line to lighten the image, and middle up or down to lighten or darken the image evenly.

3. Image color control

General image adjustment only adjusts the saturation option. When the saturation is not adjusted, it is displayed as 0; when the left limit is adjusted as -100, the image is displayed as black and white. Too much saturation can also cause the loss of screen level information.

4. Image sharpening

Click the filter option on the PS navigation bar, click sharpen in the drop-down menu, and click sharpen with USM in the drop-down menu. The USM sharpen window pops up, and adjust the three options to: quantity 50, radius 1.0, and threshold 0. Click ok.

Iv. Image storage

1. Image saving: when the image is adjusted, Ctrl+S can be used to save it.

2. Save as image: since most images do not want to destroy the original data after adjustment, save as is a better method. Simultaneously press Ctrl+Shift+S copy store.

3. Network format storage: printing panoramic photos press Ctrl+Alt+Shift+S+Web copy storage key at the same time to pop up the network format compression interface. Sometimes because the file is too large in advance prompt image can not display window, at this time select ok to enter. When compressing, just change the pixel of W or H (width and height) on the bottom right of the interface to 1600. Click the enter key to preview the image on the left side, and the compressed file size will be prompted. This option does not affect the quality of the image being compressed, and the amount of files will be smaller.