EXIF/ISP/JPEG/TWAIN

EXIF (Exchangeable Image File)

Some cameras include extra information in each photo. Thanks to that feature, information like:

• Date and time photo was taken
• Camera make and model
• Focal length
• f-Number
• Exposure
• Aperture
• Flash was used among other items are included in the camera files. Files that contain such information are called Exif files.

ISP

Internet Service Provider: the company that provides you with access to the Internet

JPEG

JPEG stands for Joint Photographic Experts Group, the original name of the committee that wrote the standardized JPEG image compression mechanism. JPEG achieves great compression of images by discarding information that the human eye cannot see; thus it is a lossy compression method.

JPEG compression can be adjusted so that the images take up more or less space in their storage; however, the smaller the space they take, the lower the quality of the images. Photozig Albums uses 90% quality JPEG images to achieve optimum balance between quality and space savings.

TWAIN

There are a few methods offered by digital camera manufacturers to make the camera contents available to applications:

• Simulate a disk drive
• TWAIN drivers
• Other methods

Photozig Albums support the two first methods, which are supported by virtually all cameras. However, if your camera's software package offers options, we strongly recommend that you opt for exposing the camera as a simulated disk drive, since the movie clips and EXIF information cannot be transferred using TWAIN drivers.

If you are capturing images from scanners, the TWAIN driver is the only option available.

When capturing photos using a TWAIN driver, an extra screen will be displayed for selection of images to transfer. Those screens are designed by the camera manufacturer's team, and not by Photozig.