|The exiftags utility parses a specified JPEG file or, by
default, its standard input, looking for a JPEG APP1 section containing
Exif (Exchangeable Image File) image metadata. The properties contained in
these data are then printed to the standard output. Digital cameras typically
add Exif data to the image files they produce, containing information about the
camera and digitized image.
The program supports a variety of cameras, and includes additional support for a portion of the maker notes for Asahi (Pentax), Canon, Casio, Fuji, Leica, Minolta, Nikon, Olympus, Panasonic, and Sanyo cameras. Currently this program runs under Windows and Unix-like operating systems.
Two included companion utilities, exifcom and exiftime, perform functions on specific tags. exifcom displays and writes the UserComment Exif tag that some cameras include in the image metadata they create. This program is useful for recording caption or location information in the image file itself.
exiftime displays and adjusts the image's Exif date and time tags. Additionally, the utility can list each file in ascending order by date and time, suitable for use in further image processing (e.g., production of a Web catalog) when filename ordering is not useful.
I originally wrote this package to support the photoweb script, available from my software page.
|The current version of exiftags is 1.01. It
carries a BSD license. The following distributions are available:
|Most of what you need to know is detailed in the man pages included with the distribution: exiftags, exifcom, and exiftime. You may also find the README or CHANGES documents useful.|
|E-mail questions, comments, patches, etc. to Eric Johnston. This software comes with no warranty or guaranteed support.|
|Following are software packages of which I am aware that
use exiftags. If you'd like something added to this list, just let me know.
|Following is a sample of the output from exiftags
using the default options:
Camera-Specific Properties: Equipment Make: Canon Camera Model: Canon PowerShot S200 Maximum Lens Aperture: f/2.8 Sensing Method: One-Chip Color Area Lens Size: 5.41 - 10.81 mm Firmware Version: Firmware Version 1.00 Image-Specific Properties: Image Orientation: Top, Left-Hand Horizontal Resolution: 180 dpi Vertical Resolution: 180 dpi Image Created: 2002:08:26 12:53:39 Exposure Time: 1/200 sec F-Number: f/2.8 Lens Aperture: f/2.8 Exposure Bias: 0 EV Flash: Flash, Auto Focal Length: 5.41 mm Color Space Information: sRGB Image Width: 1600 Image Height: 1200 Rendering: Normal Exposure Mode: Auto Scene Capture Type: Standard Exposure Mode: Easy Shooting Focus Type: Auto Metering Mode: Evaluative Sharpness: Normal Saturation: Normal Contrast: Normal Shooting Mode: Manual Image Size: Large Focus Mode: Single Drive Mode: Single Flash Mode: Auto Compression Setting: Superfine Macro Mode: Normal Sequence Number: 1 White Balance: Auto Image Number: 100-0032
|Following is a sample of the output from exifcom
using the verbose (-v) option:
Supported Length: 256 Type: ASCII Length: 34 Comment: Trip to Hong Kong, September 2002.
|Following is a sample of the output from exiftime
using default options:
Image Created: 2004:04:12 17:22:06 Image Generated: 2004:04:12 17:22:06 Image Digitized: 2004:04:12 17:22:06
Page last modified Sat Dec 15 23:07:24 PST 2007