曝光和对比度

曝光 / 局部调整 / 亮度 / 对比度 / 饱和度

使用 Capture One 曝光工具选项卡来调整曝光、对比度、亮度、饱和度、等级和清晰度。

管理曝光

  1. 按下 曝光警告 图标(请参见所圈内容,或查看>“显示曝光警告”),高光显示可能过度曝光的图像区域。
    (默认)红色将会填充可能曝光过度的任何区域。(了解如何 更改曝光警告设置)。
  2. 使用 高动态范围工具 ,有助于修复高光和阴影区域中损失的细节。
    高光和阴影 滑块还将对所有色彩和色度产生影响。
    首先尝试仔细修复高光中隐藏的信息(像素),然后逐渐调整阴影色调。“曝光”工具将会更改色彩外观。
  3. 如果图像的特定区域过度曝光,则使用 局部调整 更改曝光。

提示:“曝光”工具将会更改色彩外观。色调往往看似过度饱和,但可通过适当调低“饱和度滑块”值对其加以修复。

Press the Exposure Warning icon (see circled) to highlight areas of an image that may be overexpose

调整曝光

  1. 转到曝光工具选项卡中的曝光工具。
  2. 使用曝光滑块上下调整曝光值。

注意:此滑块经过校准后,可提供的范围为 +/- 4 个级数。其曝光调整方式类似于相机控制功能。

,Go to the Exposure tool in the Exposure Tool Tab, use the exposure slider to adjust the value up or down

调整对比度、亮度和饱和度

  1. 转到 曝光工具选项卡
  2. 在曝光工具中, 对比度 滑动条向右调整可增加整个图像的对比度,向左移动此滑动条可减小对比度。
  3. 曝光工具还具有 亮度 滑动条,它主要影响图像中间色调。向左移动滑动条可增加中间色调的对比度,向右移动则调亮阴影区并减少对比度。
  4. 调整 饱和度 滑动条可增加或减小图像的饱和度。

Adjust contrast, brightness and saturation

调整高动态范围图像

  1. 转到 曝光工具选项卡
  2. 高动态范围 工具中,使用 阴影 滑动条来调整暗区,使用 高光 滑动条来调整亮区和过度曝光区。
  3. 自动调整按钮 (A) 提供良好的起点。(按 A 图标)。

Adjust exposure with this tool

An overview of the levels tool

The histogram in the Levels Tool plots the brightness and RGB values of an image from the darkest/blackest pixels on the left to the brightest/whitest on the right. As a visual guide the plot can reveal a number of characteristics about the image, such as the range and distribution of shadow, mid-tones and highlights, or tonal range.

In the combined RGB Channel mode the Levels Tool may be used to adjust the contrast and brightness of an image, either manually or automatically using the Auto Levels option. Using the Auto option, Black and White points are mapped to the set output levels (0 and 255 respectively, if left as default). RGB values are re-distributed to avoid color shifts, regardless of manual or Auto point selection.

The color balance can be adjusted using the individual RGB channel mode, however there is no auto-option and care is required to prevent color shifts.

The histogram in the Levels Tool plots the brightness and RGB values of an image from the darkest/blackest pixels on the left to the brightest/whitest on the right

Adjust tonal range using input levels Pro

  1. Go to the Exposure Tool Tab.
  2. In the Levels tool, use the Auto (A) function or adjust by pulling the shadow and highlight point sliders until they’re just touching either ends of the histogram. 
  3. Check Highlight and Shadow warnings to identify any clipped pixels, and adjust as needed.
  4. Adjust the middle slider to lighten or darken mid-tones as desired. 
  5. Optionally, press Red, Green or Blue tabs to access and adjust separate R, G and B channels using the sliders.
  6. Levels settings may be saved as a preset and applied to multiple images.

Note: Output levels can be set manually by adjusting the sliders at the top of the histogram, or by entering values in the boxes directly above. The default levels of 0 and 255 may be permanently overridden in the Preferences section, see here for more details. Exposure preferences can be accessed from the Levels tool’s action menu icon. Press the […] icon and select Preferences.

In the Levels tool, use the Auto (A) function or adjust by pulling the low/mid/highlight point

Adjust tonal range using shadow and highlight picker (optional) Pro

  1. Go to the Exposure Tool Tab.
  2. In the Levels tool, select the Shadow Picker (see highlighted in orange) and click on a dark area of your image in the Viewer.
  3. Select the Highlight Picker and click on a bright area of your image in the Viewer.
  4. Adjust the middle slider to lighten or darken mid-tones, as desired.

Adjust input levels using shadow and highlight picker

An overview of the curve tool

The Curve adjustment tool is one of the most powerful tools in Capture One. It is used to remap the tonal range of the original image values (represented by the horizontal axis) to the new, modified values (represented by the vertical axis of the graph). The lower left and upper right zones of the graph denotes the shadow and highlight regions of the image respectively, while the area in the middle represents the mid-tones.

Adding control points to the diagonal line and modifying the shape of the curve in the shadow, mid-tone and highlight areas alters the tonality and applies contrast and exposure adjustments by either stretching or compressing tones in the image. Although the Curve tool can be used to set the black and white points, it is usually best to do so with the Levels tool using Curves to make further adjustments to the brightness and contrast. The Curve tool allows greater flexibility and control of shadows and highlights and it is particularly useful when adjusting mid-tones. Note the Curve tool palette can be undocked and expanded for greater precision and control.

Capture One’s Curve tool may also be used to adjust the Luma and color balance of the image. Images processed using earlier versions of Capture One Pro must be updated using at least the Capture One 9 engine, before being able to edit images using the Luma curve.

Select the Luma curve to adjust the brightness, or luminance component, and contrast of an image without affecting the color saturation. This tool improves accuracy when adjusting color balance using the individual (Red, Green and Blue) color channels. Use of the Luma tool also prevents banding and abnormal artifacts that are sometimes visible in transitions between colors, even when making more extreme adjustments.

Curves adjustment can be applied locally, see the local adjustment section for details.

The Curve adjustment tool is one of the most powerful tools in Capture One. It is used to remap the tonal range of the original image values (represented by the horizontal axis) to the new, modified values (represented by the vertical axis of the graph).

Adjust exposure and contrast, or color using curves Pro

  1. Go to the Exposure Tool Tab.
  2. In the Curve dialog, make sure the tool is set to RGB to adjust contrast and exposure (tonality). As an option, select individual Luma, Red, Green or Blue channels to adjust the luminance and color balance, respectively.
  3. Click directly on the diagonal line to add a control point in the tonal region that you want to adjust. (The upper-right of the diagonal line adjusts highlights, and the center adjusts mid-tones. The bottom or lower-left adjusts the shadows.)
  4. Drag a control point up or down to lighten or darken the selected region (RGB and Luma mode only). In channel mode, moving a control point up and to the left adds the chosen color, moving it down removes it.
  5. Click and drag the control point to left or right to lower or increase contrast in the chosen region.
  6. Add more points to the curve to adjust other areas. (To remove a control point, click and press delete/backspace or drag it off the graph.)
  7. As an option, you can also add points by selecting the Curve Point Picker and clicking on the area of your image that you want to adjust in the Viewer.

Note: Levels are used to control the overall tonal distribution of an image. Curves enables users to remap the area within the shadow and highlight limits that are set by the Levels tool.

Tips

  • Press the Manage Presets icon and use a Built-in Preset as a starting point.
  • When adjusting individual color channels, the Curve tool may be duplicated for each tab. Left click on the tool and select Add Tool > Curve. Repeat for each channel.

Adjust exposure and contrast, or color using curves

Set black and white points using curves (optional) Pro

The Curve tool has moveable anchor points located in the upper right and lower left corners of the diagonal line. This makes it easy to set black and white points (remap the darkest and lightest values in the tonal range). Note, it may not be necessary to make adjustments to the new anchor points, if the black and white points have previously been set using the Levels tool.

  1. Go to the Exposure Tool Tab.
  2. In the Curve Tool, position the cursor on one of the anchor points – a guideline will be displayed to help with the positioning.
  3. Click and hold the anchor point and then drag it to the desired position. For example, to remap the tonal range, move the anchor points horizontally so that the guidelines just touch the edge of the histogram.
  4. Repeat the procedure with the second anchor point.

The Curve tool has moveable anchor points, in the upper right and lower left corners of the diagonal line.

An overview of the clarity tool

The Clarity tool consists of two sliders that can be used to add or remove what is termed collectively as local contrast in images, and is particularly useful for making contrast corrections after using the High Dynamic Range tool. The tool can also be used to diminish the effect of lens diffraction.

Small scale contrast can be adjusted using the Clarity slider. It can be used to reduce the effects of haze in images, for example, but negative values can be selected to lower contrast and smooth out or soften unwanted detail that can be useful in portrait images.

The Structure slider is used to adjust micro-contrast and therefore has a particularly noticeable effect on images that feature complex or small structures, such as fine branches, foliage, grass and textiles.

The Clarity Tool has four styles or methods for applying local contrast: Natural, Punch, Neutral and Classic. The method selected affects both the Clarity and Structure sliders, however the difference on the latter can be particularly subtle depending on the subject content.

  • Natural: This method applies milder local contrast than either the Punch or Neutral options and avoids false colors and clipped highlights. Low negative values may be used for softening portraits.
  • Punch: Adds higher values of local contrast than Natural or Classic methods and increases saturation slightly, however if applied heavily some highlight clipping may occur. Positive values using this method work well with landscapes.
  • Neutral: This method adds the same level of local contrast as Punch, however saturation remains unaltered. When applying heavy contrast corrections the Neutral method usually works best, resulting in a more realistic and pleasing effect.
  • Classic: The Classic option introduced in Capture One Pro 6 applies the mildest local contrast without increasing saturation. This method preserves highlight detail better than the Punch and Neutral options. Positive values using the Classic setting work well with architecture and on images with a degree of haze. Low negative values of Clarity may be used for softening portraits.

Adjust local contrast using clarity

  1. Go to the Exposure Tool Tab.
  2. Select the Clarity tool, choose from the Natural, Punch, Neutral or Classic setting from the Method drop-down menu and adjust the Clarity slider as necessary. (Zoom the image to 100% in the Viewer or the Focus window to help in choosing the preferred Clarity method type and Structure.)
  3. Positive values increase mid-tone contrast whereas negative values lower it, producing a progressively softer look.
  4. The Structure slider is independent and enhances texture when positive values are applied. Edging the slider to the left into negative values has a more moderate softening effect than the Clarity slider.

Note: The Clarity tool can also be applied as a Local Adjustment.

Adjust clarity with this tool

调整渐晕

渐晕是一种受控的曝光调整,可以使图像的边缘和角落变暗或变亮。 边缘和边角将在添加EV值时显得更亮,而在减小时变暗。 请注意,渐晕将受到应用于图片的任何色调的影响,包括棕褐色和蓝色色调样式。

  1. 曝光工具选项卡中,选择 渐晕 工具。
  2. 调整 数量 滑块以使图像的边缘和角落改變,向右调以变亮,或向左调变暗。
  3. 作为裁剪时的选项,从方法 下拉菜单中选择所需的形状。
  4. 双击裁剪框内部以应用。/li>

Vignetting is a controlled exposure adjustment that will either darken or brighten the edges and corners of an image

调整饱和度

降低饱和度最终会使图像变成黑白。 这又将直方图从RGB改变为单色,尽管图像仍保持在输出色彩空间选择的RGB色彩空间中。 该工具使用“智能饱和”,因此它不仅仅影响正常的饱和度值。 正值(当滑块向右移动时获得)与第三方软件通常称为鲜艳的值相当。 鲜艳对皮肤色调更温和,并且能够增强例如蓝色天空,而不使图像的其余部分过饱和。 负值表示常规饱和度设置。

Decreasing the saturation will ultimately turn an image black and white