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(R)evolution

Friday, June 29, 2007

Local Correction

Strategies for selectively lightening and darkening an image

Local Correction

This is the first iteration of a new Digital Photo Pro column from John Paul Caponigro, a master photographer and artist who teaches workshops, writes books and lectures on Photoshop technique. In each installment of (R)evolution, we'll examine a technique for improving your photographs. By focusing on a single problem in each column, we hope to show you the depth and power of some of the tools at your disposal in Photoshop.

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Friday, June 29, 2007

Gradients

Mastering this tool will help to ensure that you have continuous tones in your images

Gradients

Smooth transitions. They're the essence of continuous-tone images. In most cases, you want to preserve them. On occasion, you want to modify them. Sometimes, you want to create them. While gradients can be extremely complex and yield highly sophisticated results, once the basic principle behind them is firmly grasped, they're simple to create and use. Using the Gradient tool, a gradient is created between the start (where you click first) and end points (where you drag to). The start and end points may be placed anywhere on the canvas. Gradients can be drawn for any length at any angle.

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Friday, June 29, 2007

Contrast Masks

Take control of the contrast in your images with precision using these Photoshop controls

Contrast Masks

The relationship between highlights and shadows is a critical aspect of any image. Photographers have been trained to become highly sensitized to these relationships. Today, we have more control and greater precision than ever before over these key visual elements using the digital darkroom. In Photoshop, the type of adjustment chosen will provide very specific control. The specificity of an adjustment can be further refined by using a mask. One type of mask yields extreme precision and is derived directly from the light and dark relationships within an image—a luminance or contrast mask.

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Thursday, June 28, 2007

Contour Masks

Use this powerful tool to affect precise areas of your image smoothly

Contour Masks

Digital imaging offers the ability to define complex contours efficiently and precisely, enabling users to affect an image in very specific areas. What was once tedious and challenging is now quick and easy. Once you learn a few essential selection and masking techniques, few contours will elude your grasp. Before I continue, let me caution you against defining contours too precisely. Remember, contours in continuous-tone images are often quite soft. What's more, many times photographers simply need to define broad areas to work smooth transitions into surrounding areas. Just because you can define contours precisely doesn't mean you should, but it's advantageous to have the option when you need to.

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Thursday, June 28, 2007

Masking Essentials I

Mastering the art of the mask will empower you to control your images with precision

Masking Essentials I

The ability to work in specific areas of an image with unparalleled precision and repeatable results, along with the ability to combine multiple exposures seamlessly and flexibly, are two key advances that are propelling the current revolution in photographic practice. Still, selection and masking are topics that plague many longtime Photoshop users. This whirlwind tour will demystify the process and set you well on your way to mastering these essential skills.

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Wednesday, June 27, 2007

Masking Essentials II

A number of key concepts and strategies make selection and masking more efficient and precise

Masking Essentials II

The ability to work in specific areas of an image with unparalleled precision and repeatable results, along with the ability to combine multiple exposures seamlessly and flexibly, are two key advances that are propelling the current (R)evolution in photographic practice.

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Wednesday, June 27, 2007

Double-Processing White Balance

Whether your goal is perfect neutrality or creating an effect, you can use this technique to refine the colors in your images

Double-Processing White Balance

Not all white lights are the same. Differences in white light are commonly described by their color temperatures (rated in Kelvin). The lower the number, the warmer the light; the higher the number, the cooler the light. Light temperature has a significant effect on exposure, calibration, printing and display.

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Tuesday, June 26, 2007

Extending Depth Of Field

Using multiple exposures and sound camera and software technique, you can defy the laws of physics

Extending Depth Of Field

The ability to reproduce detail is one of the essential characteristics that defines the photographic medium. While there are many similarities between the camera eye and the human eye, there are also significant differences between the two. One of the most significant differences is that the camera eye can achieve a much greater area of focus than the human eye can at one time. This has never been more true than today.

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