Join Ben Long for an in-depth discussion in this video What is a digital photo?, part of Exploring Photography: Shooting in Raw Mode.
- The raw data that comes off of an image sensor…is a collection of numbers representing…how much light struck each pixel on the sensor.…Some of those numbers represent red pixels,…some green, and some blue.…In this last movie, I said that this raw data does not…actually represent a finished image as we expected.…So, what do we expect in a finished image?…A colored digital image is composed of a grid…of colored dots called pixels or picture elements.…Each pixel is composed of three different numbers.…One representing the amount of red in the pixel.…
Another representing the amount of green,…and of course, the third representing the amount of blue.…This data is stored in three different channels…in the image.…One channels contains all of the red information,…another, all of the green, and the third, all of the blue.…When those channels are combined, we see a full color image.…The problem with a RAW file is that each pixel…only represents a single channel.…A red filtered pixel, for instance, is missing…the other two channels of color information.…
In this course, photographer and educator Ben Long shines a light on what it means to shoot in raw—and what it doesn't. Learn the benefits of shooting in raw, learn when your camera's RAW+JPEG mode makes more sense, and get insights into why some people prefer certain raw conversion software over others.
- Does your camera support raw?
- Understanding how a sensor works
- Correcting and compressing JPEGs in camera
- Customizing JPEG compression
- Understanding raw conversion
- Working with raw files in popular photo-editing software
- Shooting raw, JPEG, or both
- Reprocessing old raw images
- Choosing a camera