RAW format to handle the perfect blue sky

Step1

In camera raw, you can use the hsl/grayscale panel, click the label in camera Raw to select it (red above). First of all, we adjust the "hue" according to the display effect of the sky in the photograph. Hue can be understood as the appearance of color, is the color of each other to distinguish between the signs. Any color other than black, white or gray has hue attribute, such as purple, silver, orange, etc. Adjust the blue Hue slider to "+13" to make the sky blue more thick.

Step 2

This step we will adjust the blue saturation, so that the color of the blue sky more thick. Saturation refers to the color of the bright degree, also known as the purity of color, adjusted after the blue sky will be reduced levels, but the color will be more gorgeous. Click the Saturation tab to adjust the Blue slider to "+38".

Step 3

Because the sky is brighter than the ground, so in the ground housing exposure is moderate, the sky will have a slight exposure over the phenomenon, where the exposure is not to refer to the details of the picture is seriously lost, but refers to the color of the sky and the overall picture effect performance. To make the sky blue more prominent, click on the "Brightness" tab, slide the Blue slider to "-52", so that the blue dim, the sky color and the clouds have a clear contrast. Through this series of adjustments, the color of the sky in the picture is perfectly reproduced.

LENS correction function

As a result of the lens of the optical design problem, will lead to photographs of the four corners of the dark phenomenon, we call this situation as "dark angle" or "loss of light", but also in contrast to the edge of the scene to produce color, commonly known as "purple Edge." To eliminate these phenomena, you can use camera Raw for correction.

Step 1

To the brightness uniformity of the scene when shooting photos of the four corners have darkened phenomenon, commonly known as "dark angle." This is due to the angle of the imaging light and the lens optical axis has a larger angles, along the edge of the field of sight of light to see the aperture, because the light and aperture in the plane has an angle, see the aperture is elliptical, so the light area is reduced.

Step 2

Dark Corners are present on any lens, especially in cheap lenses. Professional zoom lens Many lenses, distance from the lens in order to allow the corners of the light to pass, must be done very much. Cheap lenses reduced the diameter of these lenses to reduce costs, causing the image of the corners to not be fully passed, thus reducing the brightness at the corners. Use of camera Raw "lens halo" function can quickly correct the problem of dark corners.

Step 3

When photographing buildings and other objects, purple edges often appear at the edge of the building and on the edges of the small branches in the background of the sky. Purple Edge refers to the phenomenon of color spots appearing at the junction of high light and low light because of the contrast between the photographed body and the background. The reason of the purple Edge is related to the dispersion of camera lens, the small imaging area of the photosensitive element and the signal processing algorithm in the camera. The purple edge phenomenon can be repaired by the "Color difference" feature in the "Lens correction" tab.

Classification:

• ps Picture processing