chapter
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Digital Photo Professional

Canon’s RAW conversion software was built for Canon files only. Because Canon does not share its architecture with other manufacturers, those companies can only create programs that generically do the

job. Consequently, those other manufacturers, whose goal is to create generic translators that work with any RAW code, cannot incorporate the subtleties and nuances available to the engineers at Canon. Of course, color and exposure can also be adjusted in other programs, but why would you want to take that extra time? Another, significant, benefit from working with Canon’s DPP software is the reduction of noise in a processed image. Noise is a natural by-product of signal amplification, how the camera defines ISO, a term that originally defined how sensitive film was to light. Camera manufacturers have programmed their sensors to mimic that same scale, so that at ISO 100 an exposure of 1/100th of a second under bright sun at f16 on film (the Sweet Sixteen rule) will yield the same results with digital media. To get higher ISO, film photographers had to switch film stock or “push process” the film at the lab. Digital cameras create higher ISO by amplifying the signal that reaches the sensor chip, but the higher the camera’s

ISO, the more noise it produces. Because Canon’s DPP software was built for its own chips, it has built-in noise reduction, engineered only for Canon, that generic RAW converters simply cannot target. Noise is typically most prominent in darker tones or shadows and with higher ISO speeds. DPP uses two windows for its operation. The Main window acts like a browser; you point it to the folder you wish to view, select it, and all of that folder’s contents show up in rows of thumbnails. Select one, some, or all of the images, then select Edit Image window from the button menu at the top. Doing so will call up a second window, the Edit window, and your selected images will appear in a vertical row on the left. The first image from the selected group will appear large in the main portion of the Edit window. You’ll note this image will look fuzzy for a few seconds, as DPP renders the file.