Most of photographers save images in DSLR cameras as JPEGs, but these files are the product of hefty in-camera processing of the sensor data. While such processing usually works well, it sometimes makes for problems in the images as it discards some information and compresses the remaining data.
To save the complete, unadulterated picture data, opt instead for RAW files. A computer application called a RAW files converter (included with most DSLR cameras) opens a RAW file and converts the file’s data into an image. The important part: The converter lets you (not the DSLR camera) set the parameters of the image processing. Here are four ways this control can help you.
DIG DETAIL OUT OF THE SHADOWS.
RAW files images capture about two more stops of dynamic range than JPEGs, meaning shadow detail that might be pure black in a JPEG can retain detail in a RAW file.
SHOOT FIRST, BALANCE LATER.
You don’t have to worry about setting the DSLR camera white balance when shooting RAW file. You can adjust it to your taste later on when converting the RAW file. You can choose to click on a preset (like Daylight, Tungsten, etc.) or custom-tune it to your heart’s content.
OPEN MULTIPLE TIMES.
RAW file converters create images without altering the original RAW files, so you can open a RAW file repeatedly to try new things. It’s like a film negative: Endless interpretations are possible from one original. Notice the difference in felling from a bright, oversaturated color version and a monochrome rendition from the same RAW file.
WHO NEEDS PHOTOSHOP?
RAW file converters control exposure, contrast, color balance, and saturation; many also sharpen, reduce noise, and remove lens aberrations. This might be all the image control you want.