http://www.thelagoodtimes.com/black-white/
Changing Color Digital Images To Black And White
Earlier during the time of film photography taking black and white photos was a complicated process which involved lot of processing in the dark room. This technique was used for many years since the was the basic of types photography, the black and while photos were created from the negatives anfd then they were converted to color which inturn was color transparencies.
Now through the digital photography process photographers can enhance their color images, turning them into brilliant black and white images in one tenth the time while obtaining image quality that exceeds the black and white filtration and darkroom process.
The RGB component of the photos were converted in the ratio of 30:60:10. The values corresponding to the equation will be 10 percent of the value in blue, 60 percent in green, and 30 percent in red. This breaks down to the black & white conversion being assimilated into different weightings to the RGB channels. Because there is so many variables, experience combined with a good “eye” dictates creative difference that relates directly to the image.
Keep in mind that in black & white the green colors appear the brightest, while the blue end of the spectrum appear darker. Also that conversion to the grayscale is not the same as desaturation, which reduces all colors to gray.
You cannot expect that the ratio given above will meet all kinds of conversion but this can be sufficient in most cases The red component of the image can be brightened to obtain higher contrast in black and white images with a background composition using the green channel.
A software component called Channel Mixer is available for easy conversion of color by adjusting the ratio of the RGB components or changing the weight of the pixel component. Most of the photo process software available in the market has facilities for this conversion alternatively you can download free software that equals the quality. Although, it also can generate output to monochrome images by maximizing the adjustment to one end of its scale.
This will alter the overall exposure of the image as well, bringing the image into appropriate contrast and brightness ratios without further adjustment. With some conversion tools it is also possible to alter the balance of yellow, magenta, and cyan conversions (photo darkroom basics) for an even greater range of effects in black and white.
There is another method for conversion called toning which process the black and white images to a single tone color. This conversion is done on the cyan blue, yellow green, or gold toned images or the sepia tones. Other colors are available for toning in digital and the creative spirit the only limitation to what those may be.
Toning an image is converting from color to black & white within the RGB mode, and must be completed before toning.Reducing contrast while you brighten the shadow detail will effectively build the image into an acceptable tone gradation while obtaining better quality. Black most often remains dark and even blacker when a digital image is toned. If there is detail within the darker or black portion of the image then a brightener tool adjustment made to bring the detail out is done, before the tone process.
If you are one of the passionate photographers who are into providing wedding photo albums and some other guidance on photography business and techniques related to digital photography and digital cameras, it’s advisable to start writing your own blog or create a website of your own to deliver your message to the mob.
G.NA – ‘Black & White’ MV
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