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PS Tutorials|2007.06.20.

Correction of white balance errors in Photoshop

level: advanced


White isn’t white? Your photos are full of unrealistic colors? Don’t throw them away! Read the following article instead!


 
   

Free Photoshop Tutorials: Phase One Capture One 4.0: Quick picture conversion

Version: Phase One Capture One 4.0


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Phase One Capture One 4.0: Quick picture conversion


 

Phase One
Capture One 4.0:
quick conversion

The time has come for us to get in action. We have loaded our RAW pictures that we wish to convert into the Browser section of Capture One. Now we should choose the first photo and convert it into a JPEG. You can start it by double-clicking any of the photos in the broweser.

This time we will show a quick conversion method, a hasty setting of explosion and colors, which will be made easier by the use of Capture One. How? This software has a Quick tools palette. This is located in the Tool dialog introduced in our previous article, where Library is. There is the Quick panel icon with all the major setting options needed for picture conversion next to Library icon.

Phase One Capture One 4.0: Quick picture conversion

Histog…what?!

The first dialog to greet us is a histogram showing the hue arrangement of the photo. It is capable of displaying not just luminance channel but also all three color channels of RGB color space. I’m sure I don’t have to explain that the blue line stands for the blue channel, while the red one shows the red color proportion. Under histogram, some information on exposition has been given room such as sensitivity, exposure time and shutter value. The arrow on the left side of the headline will close or open the given window section, while the arrow on the right will open its settings or default settings. With the help of the right arrow in Histogram, or by hitting Ctrl+E, you can have the burnt-out or blackened picture areas displayed. The former is a red, the latter is a blue patch on the screen. Unless we set them another color in the options mentioned above or at Preferences menu.

Phase One Capture One 4.0: Quick picture conversion

The basic characteristics of the picture

Base Characteristics under histogram is a very important and unique part of Capture One. You can load various camera types’ ICC color profiles here (ICC Profile) and you can also give the shades curve (Curve) of the picture. You will find all the cameras supported by the software among the color profiles, and some even have several setting options, and so pictures taken in sunlight or with a flash can also be rendered an appropriate profile. Apart from cameras, different color effects can be chosen. With a single click, change to black-and-white or sepia shade in Effects menu, and if you don’t need special color settings, then simply turn off this function with No Color Correction in the Other section.

Phase One Capture One 4.0: Quick picture conversion

Curve menu has four shade curves for the users. Film Standard means the basic setting. This provides the result that resembles normal contrast in the picture the most. If a photo is originally too full of contrasts, it’s better to use Film Extra Shadow setting, which will make the shadows lighter, revealing more details in these areas. But if its opposite is the problem, then Film High Contrast could mean the solution, which makes the picture more lively. Like Film Extra Shadow, Linear Response also yields a dull, contrast-poor result with a straightened curve, and so the mid-tones also become a bit darker. Settings in Curves provide ground for further work, just like the optimally selected ICC profile. You will find on the right side of the headlines of Base Characteristics an arrow pointing downwards, and one pointing to the left. The latter appears in several other palettes as well and it clears the settings used, or in other words, it returns the original state of the photo.

Phase One Capture One 4.0: Quick picture conversion

Phase One Capture One 4.0: Quick picture conversion

White should be white

White Balance part is surely familiar to every digital cameraman, since they know this setting on their camera. This option is essential for a good color balance in the photo, since a camera — in contrast with the human eye — is unable to compensate for the discoloring effect of the different waves of light. Therefore a camera will always have to know what the light source was and adjust colors accordingly. If this did not happen either because of the camera or the photographer, we are talking about a wrong white balance, and we can only post-edit the setting. It’s quite a nuisance with a JPEG, as there are fewer hues, but is much less of a problem with a RAW. You can post-edit color balance practically with no harm. If you don’t want to spend much time with this, use the little A-icon in the headline of the panel, which stands for automatic white balance. It’ not always perfect, so you may well have to resort to the settings in White Balance.

The simplest way is to use Presets also known from the cameras' settings, use of factory settings that is. You can choose them in Mode menu. Shot is the original state, but you’ll find Daylight, Tungsten or Cloudy options adjusted to time as well.

Phase One Capture One 4.0: Quick picture conversion

If the result is still not perfect, there are two things to choose from (third is total despair, but that’s no way to walk for RAW). One is to click with the eye drop icon next to Mode on a point of the photo that does not contain color information, which means it is mid-grey or white perhaps. It will be a piece of cake if you first take a photo of a grey or color card, which will serve as a reference for the eye-drop sample. Well, this would work in a studio photographing situation, but not during action photos. So we are left with Marvin and Tint sliders. The upper one regulates color temperature, at 1 Kelvin grades, while the bottom one shifts amends the colors of the picture by shifting them to the green (left) or purple (right) direction.

Phase One Capture One 4.0: Quick picture conversion

A little trick for the use of these sliders: if you drag the mouse pointer over any of them and then turn the scroll wheel of the mouse, their value will change step by step. This method works with all the sliders of the software.

Basic Exposures

Factory settings of Exposure might be quite familiar to anyone who has ever seen a photo editing software. In case you under- or overexpose the photo, Exposure settings can still improve it, with +/- 2.5 exposure value (EV), with 0.5 EV steps. Contrast setting is just below it. It turns a picture more vivid, or more dull if you wish. Brightness will influence the lights in +/- 50 steps. If you are lucky, you won’t even need it after setting Curve profile and the appropriate Exposure + Contrast settings. Finally, there is Saturation, which changes saturation of colors. If you drag it to the left completely, the picture becomes black-and-white, shift it to the right to strengthen colors.

Phase One Capture One 4.0: Quick picture conversion

Another trick Before setting white balance with the eye drop tool, that is when you define the mid-grey reference point of the picture, set Saturation to the maximum. Color will be more distinct and so it will be easier for you to define mid-grey reference point.

High Dynamic Range

High Dynamic panel is a big help with digital cameras, as their contrast range is usually quite small. Definitely smaller than our eyes. As a result, it may well be that the areas where our eyes can still see will be too dark or bright in a digital photo. A solution is RAW, which has the potential to display such parts correctly. Shadow and Highlight sliders here are of help. By increasing Shadow, you’ll brighten the shady parts, while Highlights will help darken too bright areas without modifying other hues in the photo. Usually, it is better to play with these sliders after setting exposure.

Phase One Capture One 4.0: Quick picture conversion

Phase One Capture One 4.0: Quick picture conversion

Phase One Capture One 4.0: Quick picture conversion

Conversion

If the edited image is to your liking, conversion is the next step, which can be started with the Process button at the bottom of the panel. Before you start, it’s worth to take a look at the summary info above. You can see here in what file format and quality the image converted from RAW will be saved, what color profile the photo will have. If you would like to change the settings, click on Output panel a few steps away, where all these can be modified. Now is the time to push the Process button. The result of the action can be a compressed 8-bit JPEG, or an 8-16 bit TIFF file, or another RAW file in DNG format.

Phase One Capture One 4.0: Quick picture conversion

It’s advisable to follow the conversion steps as the Quick Panel sections were put in order by the writers of the software. So a Quick RAW conversion looks like this:

• Load the RAW file
• Switch to Q (Quick) panel
• Information on Exposition, tone distribution check in histogram
• Choosing ICC color profile according to the camera type
• Choosing the curve profile according to the contrasts of the photo
• Setting white balance
• Setting Exposition (brightness, contrast, saturation)
• Dynamics correction, if necassary
• Checking conversion settings, and correction if necessary in Process panel
• Launching JPEG (TIFF, DNG) conversion

If you feel irresistible desire to try the software even after this dry lecture, you can find the 30-day trial version here (new version: Capture One 6).

 

More Phase One CaptureOne Tutorials

 

 

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