Which file type is the best choice for digital camera captures? Both RAW and JPEG have distinct advantages. Take a closer look in the article below before you set up for your next shoot.
What is RAW?
RAW files are uncompressed and unprocessed captures of all the detail your digital camera sensor is capable of recording. In its purest form, it’s the raw sensor data. The term ‘digital negative’ expresses the idea of exposed analog film in a digital environment. However you refer to it, RAW is the superior file format when it comes to post-processing. This is especially true when you compare RAW and JPEG files.
Why is RAW important?
You get the highest possible quality and the most data. RAW has more zeros and ones per file than any other image type. This becomes important when you’re editing and printing. The more info the computer has to work with, the more you are able to tweak without degrading your image. This becomes especially important when working with shadows or highlights. With a RAW file, you can recover this information through edits.
With a JPEG file, some image information might not be written to your card. This is because JPEG is a lossy format, which means that, in order to reduce image size, data is compressed and “unimportant” information is discarded. Depending on the kinds of edits you want to make in your image, this discarded information could turn out to be important.
With JPEGs, the camera locks in all the settings that applied when the shot was taken. With a RAW file, you can adjust these settings (exposure, white balance, color, contrast, highlighting, etc.) in post.
What does RAW vs JPEG do for you?
Let’s consider brightness, which is measured in levels. A JPEG captures 8 bits, while RAW files capture 12 bits or more. Bits equate to levels of brightness. An 8-bit files give you 256 levels, or slices of information, per file. This means that each pixel has 256 notches between solid white and black (or of red, green, and blue). A 14-bit RAW file can have more than 16,000 levels. So, thinking in the tiny aggregate of a RAW image, transitions between tones in the shot will be smoother. And the image will hold up to more adjustments in post processing. So you can recover the face of someone in the background of the shot without them looking like a grainy mess. So when comparing RAW vs JPEG, RAW definitely contains more information, which gives the editing pipeline more data to work with.
JPEGs aren’t all bad
Lossy format images like JPEGs have some merits of their own. They are significantly smaller. This means you can fit more on your card, and that they won’t take up so much hard drive space. Processing these images is quicker because there is less information for your computer to deal with. So if you’re only editing pics with friends or family for Instagram, RAW could be overkill.
When photographing rapid motion, such as children playing, wildlife, or sports events, using JPEGs is often a wiser choice. If the scene is lit properly, you’ll have a better chance of capturing the perfect moment, since your camera can rapid fire these smaller JPEG images. On a high-quality camera, the visual quality will be still very good. Shooting RAW on the other hand will likely choke up the image buffer after a burst of shots, making you unable to shoot at all until the camera writes the images to the card.
JPEGs are already processed, so what you see is what you get. The camera has locked in all the settings that applied when the shot was taken. This is the instant film version in the digital world.
RAWs are commonly recorded in a proprietary format, meaning that you need specialized software to view the file. If you use Exposure, this isn’t an issue, since Exposure supports a wide variety of RAW image types. Exposure users also have the benefit of Exposure’s speed. If you have your RAW files saved to a fast internal drive, then Exposure is able to quickly load even large ones.
RAWs store more information, but are also more demanding than JPEGs in terms of shooting speed, storage space, and processing power. Most professionals and even many hobbyists depend on RAW for the freedom that it provides them when editing. JPEGs however have their place, especially if you need to shoot many images quickly.
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