RAW Images are this thing that confuses and bewilders many people, it has immense advantages over standard image types such as JPEG or TIFF. RAW is also something that took me a very long time to comprehend, due to the fact that anything you read about RAW images were pages of numbers and charts and lengthy explanations of its properties and uses. My goal is to write a piece on RAW Images, explaining its uses and properties, without all that intensive language and numbers on RAW statistics.
The first thing is to explain why you should be using RAW over a JPEG or other image format. The secret of RAW's power is in the format it saves images. RAW's are known for their detail, in both colors and in blacks and whites. This is because a RAW image saves every single pixel of the image as its own color, a JPEG bunches colors together, in JPEG this gives you loss in detail on objects that are similar colors and in blacks and whites resulting in an overall lower detailed image. Because of these styles of image capturing RAW is a much larger file than JPEG, because of this you will have to compensate with a larger memory card or more memory cards, a RAW image for example on my Canon 7D depending on image factor will sit anywhere between 20-30mb. Shooting JPEG image files sit around the 7-9mb size (It also fills computers hardrives very quickly)
The list of RAW's possibilities don't just end with its superior image quality. When a raw image is processed in a post processing program such as Abode Lightroom or Photoshop, You will have the opportunity to do a wide range of editing before you do the normal editing that you would do with a JPEG image for example. In Photoshop it looks like this:
In the above image you see a RAW image being opened in Adobe Photoshop (CS5) The panel with all the sliders is what gives RAW its power over JPEG. You will get this window every time you open a RAW image in Photoshop, as seen you can change many factors of the image, doing this you can correct small technical errors in the image without losing major detail in the image. In Adobe Lightroom it looks slightly different:
Adobe Lightroom does not have a special window for opening RAW images because the nature of Lightroom, it stores all of your images as well as being a powerful editing program, its editing panel is on the right and has everything the Photoshop editing panel has and much more.
Advantages of image quality and editing properties give RAW a huge advantage over other image formats, the problem of image size is easily outweighed by the other factors of this format. If your camera is not currently switched to RAW shooting i strongly suggest you do this, the only time you should be shooting JPEG is when you have very little card space left, no spare cards and need to keep taking images. If you haven't used this format before you will very quickly be won over it when you are sitting at your computer, sometimes at ungodly hours of the morning if you are someone like myself and you will be forever grateful for shooting in RAW.
The Final Image for the Day |
I hope this little piece have filled in some vague areas of RAW for you and has giving you new knowledge,
Till next time,
Nick
For more of my photos see Here