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.
jp2 The JP2 file extension, also known as JPEG2000, was created by the JPEG Committee in the year 2000. The JP2 succeeded the first JPEG Standard in 1992 which was cosine transform based. It features the use of a "wavelet-base", unlike its predecessor JPEG standards. This file format uses a different image compression method. The compression method involves altering certain sections of the image, in terms of quality reduction. This method of compression ensures smaller file sizes and optimal storage. The JP2 file format has made several improvements over the JPEG Standard since 1992. The JP2 files can make use of both the lossless and lossy compression techniques.