Copyright 2006 Peter Horner
Laptop Battery Most images were produced in black and white for nearly a
hundred years after the invention of photography, but now colour
images have become commonplace. Creating strong three dimensional
images on a piece of paper is one of the best attributes of black
and white photography, as the effect can be more striking than with
a colour photograph. Without the colour to distract us we become
more aware of the subtle tones which can be found within a black
and white image. In this article I will share the technique I use
that will help you create beautiful, striking and moody black and
white images from your colour photographs.
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- Conversion to black and white
- Conversion to sepia
- Sort the Filmstrip by timeline, roll, location, rating, folder
Thinkpad Digital cameras have a black and white mode but more information
and detail will be recorded in colour, which will also create a
higher quality printed image. This is why I always shoot in colour
then convert images later. There are several ways of converting an
image to black and white using Photoshop and many other image
editing programs. You could simply desaturate the colours, but
creating a black and white image with real tone and definition goes
beyond this. Levels, curves and the Unsharp Mask can be used
creatively with black and white conversion to provide further
control over tones and contrast to create a stunning image.
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Microsoft Channel Mixer - I have found that using the Photoshop Channel
Mixer is the easiest way to convert an image to black and white and
produces the best results. The Channel Mixer allows you to control
how much red, green and blue contribute to the final monochrome
image.
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Laptop Computers The Channel Mixer can be selected from the adjustment layer
popup menu in the layers palette or you can also access it from
under the image menu.
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Laptop Computer Clicking on the left tick box entitled Monochrome will convert
your photograph into a greyscale image, and gives you the ability
to blend the red, green and blue channels. Adjust each of the
sliders to produce an image to your liking. As a rule make sure
that the total values for each channel adds up to 100%. This
creates monochrome images that are the equivalent of ones shot on
black and white film through red, green or blue filters. For
example if you wanted to maximize cloud contrast in a blue sky,
then a red filter would achieve this. I usually set the red channel
to 0 and the green channel to 100 to cut down on the amount of
noise, or sometimes a combination of red and green depending on the
image.
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Desktop Computer Curves and Levels - Brightness and contrast can be adjusted in
Photoshop by using the curves and levels tools, which can be found
under Image> Adjustments Curves/Levels. Both curves and levels
allow you to adjust the tonal range of an image. When using the
levels command you can make adjustments to just three variables,
highlights, shadows and midtones. I prefer to use curves as it
gives you more precision. With curves you can adjust any point
along a scale while keeping up to 15 other values constant. By
adjusting the black point and white point in curves you can give
your image more contrast. At opposite ends of the diagonal line you
will find a small dot. When you grab hold one of the dots with your
mouse and drag it around you will see the image change. To create
more contrast drag the black point lower and the white point
higher, so that either end of the diagonal line is curved. Practice
using curves and levels and explore the different effects you can
achieve with your images.
Notebooks Unsharp Mask - The Unsharp Mask is my preferred tool for
sharpening images, which can be found under Filter> Sharpen>
Unsharp Mask. It is a traditional film compositing technique used
to sharpen edges in an image and corrects blurring. The Unsharp
Mask locates pixels that differ from surrounding pixels by the
threshold you specify and increases the pixels' contrast by the
amount you specify. In order to get the look which I desire in my
images I use the Unsharp Mask twice. I begin by using a high radius
and lower amount, such as a radius of 50 pixels and an amount of
30%. This gives the image a much more intense look and details will
stand out. The second time I use a lower radius of 1 pixel with a
higher amount of 30%, which will correct any blurring and sharpen
the image.
Lenovo Visit this page to view examples of images created using a
combination of these techniques -
http://www.designerprint.co.uk/articles/black-and-white-photography-conversion.htm
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Travelstar Peter Horner has years of experience in photography and digital
printing technologies and also co-created the large format printing
company DesignerPrint. Using large format printing technology
DesignerPrint create canvas prints, block mounts, and poster
prints.
http://www.designerprint.co.uk/services/canvas.htm
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