Digicam file formatsWritten by Jakob Jelling
Continued from page 1
The next digital camera file format is TIFF (Tagged Image File Format). This file format has greater advantage that it does not lose any image file information during compression process and moreover as a consequence it does take up a lot of space from a memory card in comparison to a JPEG image. Due to this detailed storage it also takes additional time to retrieve information to card. Basically TIFF compression reduces images to about one-third their original size as per convention. Coming to next digital camera file format. It is defined as RAW file! It is also sometimes referred to as an appropriate digital negative. Most advanced digital cameras allow or permit ability to shoot RAW in professional standards. The interesting portion is that in a RAW image no alterations are made by camera (such as sharpening or white balance). And this gives entire control to photographer when he or she processes an image later. However this RAW file format is not used extensive due to fact that most image editors cannot open it and computer-processing time is also more. However fact still remains that a RAW image has a smaller file size than a TIFF. With all these discussions regarding different digital camera file formats, it is clear that three most widely accepted file formats have their own advantages and disadvantages, yet they are unique in some way or other that makes them special in their own manner. The knowledge about these digital camera file formats of storage not only yields greater understanding of camera; it also opens eyes towards fantastic results of technological advancements in our daily lives.

Jakob Jelling is the founder of http://www.snapjunky.com. Visit his digital camera guide and learn how to take better pictures with your digicam.
| | Digital zoom versus optical zoomWritten by Jakob Jelling
Continued from page 1
It is a common intuition that optical lenses are far better than digital zooms. The reason is that digital camera zooms are more prone towards computer applications in them rather than mostly human interactions and expertise. Yet, it also remains a fact that beginner photographers find it more useful to handle a digital zoom and also its computer friendly nature. There computer does intricate tasks of finding some levelheaded approximation of colors that pixel might take up as it had captured images or photographs. Many algorithms are existent in this area, but perhaps most abundantly used algorithm involves looking at pixels that are quite nearly like neighbors and come up with a kind of an average. Anyways process remains too complicated and its end result is what digital zoom users are interested in. Thus ultimate truth remains that it is useless to compare digital zooms with optical zooms. Perhaps it is more logical to compare optical zoom with optical zoom and digital zoom with digital zoom. Both these two types of zooms, optical as well as digital, have some good and bad qualities. Both of them have some extra features and preferences over other. And thus it is not wise to compare them, even though a comparison may exist. The efforts would then perhaps look like comparing oranges with apples!

Jakob Jelling is the founder of http://www.snapjunky.com. Visit his digital camera guide and learn how to take better pictures with your digicam.
|