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Using the Color Wheel to manually adjust color 

To manually neutralize a color cast, such as a yellow scene caused by indoor lighting, use the loupe in the 
Review Window to sample a color that represents a neutral gray. Based on the RGB values in the loupe, 
drag the target ring in the color wheel to set the CMY values so that the RGB values will equalize. Since 
the sampled color was known to be neutral, this generally balances the overall color of the image. 
 
The value of the target ring is represented by units of cyan, magenta, and yellow recorded below the color 
wheel, displayed in “CC” (color correction filter units). The chart on the preceding page indicates the 
relationship between red, green, and blue, and cyan, magenta, and yellow. 
 
If you feel the image has an overall color cast, and do not have a neutral color to sample, drag the target 
ring in the opposite direction of the unwanted color to neutralize. For example, if the image appears too red, 
move the target ring towards cyan, on the opposite side of red in the Color Wheel. 
 

Using the Color Adjustment Eyedropper to adjust color 

 

Use the Color Adjustment Eyedropper to let SIGMA Photo Pro create neutral gray tones in 
your image. Locate a portion of your image in the current Review Window that includes a 
known neutral color that is not rendered as a neutral color. Click on the eyedropper button. 
The pointer turns to an eyedropper.  

 

 

 

Place the eyedropper over the color to be neutralized and click. The 
software will evaluate that sample and make adjustments to achieve a 
neutral tone.  You can also click and drag the color picker and the 
software will continue to sample and adjust until you release the mouse. 
 

Once you have clicked on the neutral tone, click the 
eyedropper button to return to the original loupe or 
pointer.  
 
Note in this example that the known neutral gray 
square was weak in Blue. Once balanced, the Blue 
value increased from 127 to 211, and the gray now 
appears neutral as in the original scene. 

Before  

After adjustment

 

 
 
 
If you are viewing the image in the Review Window using the loupe, notice that the RGB values in the 
neutral area are exactly equal to each other, or nearly exact, after the adjustment.  
 
If you wish to redo the gray balance using a different sample point, click on the eyedropper button and 
repeat the steps above. 
 
If you do not like the results of the color adjustment, click on the 

Reset 

button at the bottom of the panel to 

return to default (no color adjustment) setting. You can also use the eyedropper adjustment as a base, and 
then move the target ring in the color wheel to refine your adjustment. 
 

SIGMA Photo Pro User Guide 

 

31 

Содержание PHOTO PRO 2.5

Страница 1: ...S SI IG GM MA A P Ph ho ot to o P Pr ro o U Us se er r G Gu ui id de e Companion Processing Software for SIGMA Digital Cameras Version 2 5 For WINDOWS...

Страница 2: ...player can cause hearing loss Playing the included CD ROM on a music CD player could damage the speakers The images recorded with this camera are intended strictly for personal use and should never b...

Страница 3: ...ware 7 2 2 Setting up your monitor 8 Verifying monitor brightness gamma and color 8 Using a pre existing monitor profile 8 Choosing the best monitor resolution for your screen size 8 3 3 T TR RA AN NS...

Страница 4: ...Navigation Buttons to select images 19 Selecting specific images from the Main Window 19 5 3 Using the Magnification Loupe 19 Turning the loupe on and off 19 Changing the magnification of the loupe 19...

Страница 5: ...sure 29 Contrast 29 Shadow 29 Highlight 29 Saturation 29 Sharpness 29 X3 Fill Light 29 7 3 Making Color Adjustments 30 Using the Color Wheel 30 Using the Color Wheel to manually adjust color 31 Using...

Страница 6: ...E E O O F F C C O O N N T T E E N N T T S S Image information in the Thumbnail Pane 36 Image information in the Camera and Computer Panes 36 8 2 Accessing the Image Information Window 37 The Image In...

Страница 7: ...SIGMA Photo Pro User Guide 1 1 1 I I N N T T R R O O D D U U C C T T I I O O N N In this section you will learn The main features of SIGMA Photo Pro How this manual works...

Страница 8: ...ture information View file information View processing information Adjustment Controls Palette Adjust image Exposure Compensation Contrast Shadow Highlight Sharpness Saturation and Fill Light Adjust c...

Страница 9: ...in TIFF or JPEG formats SIGMA Photo Pro User Guide 3 Use Edit Buttons to rotate mark lock or delete selected images Click on the Info Button to open the Image Information Window Use Thumbnail Buttons...

Страница 10: ...image in TIFF or JPEG format Click on the Info Button to open the Image Information Window Use Edit Buttons to rotate mark lock or delete the currently displayed image Press the X3F Button to update...

Страница 11: ...enu Choice Keyboard Equivalents are shown as follows Ctrl Letter or Symbol Ctrl is an abbreviation for the Control Key on a Windows system Navigating the on screen version of the manual To view the SI...

Страница 12: ...SIGMA Photo Pro User Guide 6 2 2 C C O O M M P P U U T T E E R R S S E E T T U U P P In this section you will learn How to install SIGMA Photo Pro on your computer How to set up your monitor...

Страница 13: ...computer insert the installation disk that shipped with your SIGMA camera Double click on the CD icon on your desktop Then double click on the Set Up icon to install the program The wizard will take...

Страница 14: ...verification of color neutrality and gamma only Use your monitor s adjustment controls as specified in the manufacturer s documentation to make any adjustments Using a pre existing monitor profile For...

Страница 15: ...SIGMA Photo Pro User Guide 9 3 3 T T R R A A N N S S F F E E R R R R I I N N G G I I M M A A G G E E S S In this section you will learn How to connect your camera to your computer...

Страница 16: ...files from the camera to your computer 1 Click the SIGMA folder in the DCIM folder of the camera detected as a storage device to display the stored images in the camera s card to the Thumbnail Pane 2...

Страница 17: ...4 M M A A N N A A G G I I N N G G I I M M A A G G E E S S In this section you will learn How to display view and sort images How to select and move images How to rename images How to mark lock and rot...

Страница 18: ...mages Access the Image Information Window Open an image in a Review Window The Thumbnail Pane displays images directly from the camera when the Camera Pane is selected or images from folders when the...

Страница 19: ...yi in ng g i im ma ag ge es s i in n t th he e M Ma ai in n W Wi in nd do ow w View images stored on your computer Click on the Computer Pane to select the last folder viewed The Computer Pane title w...

Страница 20: ...s Click on the button or select View Large Thumbnails in the Main Window menu Small thumbnails with details Click on the button or select View Thumbnails with Details in the Main Window menu Sorting a...

Страница 21: ...must remain unchanged 4 4 5 5 S Se el le ec ct ti in ng g i im ma ag ge es s Selecting one image Click once on a thumbnail to select an image Double clicking selects and then displays the image in a...

Страница 22: ...marked and unmarked images all images will be marked If all selected images are marked clicking the Mark button will unmark the images Only X3F images can be marked Locking and unlocking images Lock...

Страница 23: ...s section you will learn How to open a Review Window How to view different images in the Review Window How to view details using the loupe How to check shadows and highlights with the warning mask How...

Страница 24: ...he following View individual images at a larger size and higher resolution Process and save images individually Review images with different adjustment settings Access Adjustment Controls for custom p...

Страница 25: ...in the folder Whenever you switch folders in the Main Window both Navigation buttons will be disabled until you replace the image in the Review Window with an image from the new folder Selecting spec...

Страница 26: ...r of the loupe which represent Red Green and Blue values in a 5 by 5 pixel sample in the center of the loupe For additional information on color refer to Section 7 3 Making Color Adjustments 5 5 4 4 V...

Страница 27: ...sted automatically for each image displayed Auto Mode remains selected until you choose another mode or manually adjust a setting using Adjustment Controls To see what adjustments Auto is making open...

Страница 28: ...eing applied to the image 5 5 6 6 M Mu ul lt ti ip pl le e R Re ev vi ie ew w W Wi in nd do ow ws s Opening Multiple Review Windows Having multiple Review Windows open lets you compare images or setti...

Страница 29: ...6 6 P P R R O O C C E E S S S S I I N N G G S S A A V V I I N N G G In this section you will learn How to process and save images How to apply adjustments How to choose resolution file type and color...

Страница 30: ...batch of images 1 Select the folder containing the X3F images you wish to process 2 You can process the entire folder selected images or marked images 3 Select or mark specific thumbnails if desired...

Страница 31: ...g dialog box appears Source The original capture resolution and filename are recorded here This data cannot be changed Adjustment Mode Reflects which Adjustment Mode is selected for image processing C...

Страница 32: ...is the same as the resolution you selected when capturing the image on your camera High Medium or Low You can also select one half or double the resolution one half or double the number of pixels in...

Страница 33: ...G G I I M M A A G G E E S S In this section you will learn How to use the Adjustment Controls palette How to make tonal adjustments How to make color adjustments How to use the Histogram How to set th...

Страница 34: ...djustment Controls Palette To open Adjustment Controls click on the Adjustment Controls button in the Review Window Adjustment Mode Use to set the adjustment mode and to save and delete specific adjus...

Страница 35: ...ckness of the blacks and the whiteness of the whites with a single control Increasing the constrast brightens the whites and darkens the blacks Decreasing the contrast grays both the whites and the bl...

Страница 36: ...pen and close the Color Adjustment panel The Color Adjustment Eyedropper Click the Reset button to restore color adjustments to default no adjustment settings The Cyan Magenta and Yellow values displa...

Страница 37: ...r image Locate a portion of your image in the current Review Window that includes a known neutral color that is not rendered as a neutral color Click on the eyedropper button The pointer turns to an e...

Страница 38: ...side of the graph The scale in which these values are measured is between 0 blackest shadow and 255 whitest highlight Enabling disabling and setting values for the Warning Masks To turn the warning ma...

Страница 39: ...ing Flash Select this setting when taking pictures with th Sigma EF 500 DG flash Auto Select this setting to allow the camera to automatically determine the appropriate white balance adjustments Monoc...

Страница 40: ...te Setting button located at the bottom of the Adjustment Mode Panel The Delete Setting dialog box will appear Click on the name of the setting you wish to delete and click Delete Replacing stored X3F...

Страница 41: ...Guide 35 8 8 G G E E T T T T I I N N G G I I M M A A G G E E I I N N F F O O In this section you will learn How to find image info in the Main and Review Windows How to open an Image Info Window for a...

Страница 42: ...In addition to text information single images will also display icons in the information field indicating marked status locked status and transfer status If the selected image is a TIFF or JPEG proces...

Страница 43: ...e button in the Title Bar or on the Close button at the bottom of the window There are three sections in the Information Window The top section contains general information about your file Next the ca...

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