crw CRW stands for the RAW image format.This format is gaining a lot of popularity nowadays since a lot of the cameras people utilise ( the single lens reflex cameras ) are using this format. The data coming from the image sensor, in the case of the RAW format, is by far the most basic and unprocessed of all. CRW is also known as digital negatives, the RAW image files have quiet the same use as the negatives used in film photography.
tga The .tga filename extension refers to the Truevision raster graphics file format. It is a graphics format that was developed by Truevision incorporated in 1984, a company which was later acquired by Avid Technology. The company was known for developing computer daughter boards designed for digital video authoring and editing. These boards used the Truevision TGA format natively for digital video editing and were supported by both PC and Macintosh at the time.