TTNview - a simple EXIF information viewer

November 18, 2004 - Version 0.8.35 Alpha

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What is TTNview?

TTNview is a simple viewer of EXIF information recorded by digital cameras in image files. This normally includes various information about image and shooting conditions, as well as data about the camera and settings.

FEATURES Shows EXIF data for JPEG and TIFF images; Supports most digital cameras; Reads all standard EXIF tags and several proprietary formats; Smart data recognition; Keyboard support for quick work; Just 88KB! Very fast. FREE! Download now!

TTNview recognizes all standard EXIF tags and some proprietary formats of digital camera manufacturers. Here's the list of fields shown by this version:

Column Title	Description	Comments
Shooting conditions
Speed	Shutter speed, aka exposure time, seconds	Either a fraction of a second (like 1/250) or a number of seconds (like 2")
F-Stop	Aperture value, aka F-Stop	The value is the fraction of the Focus Length, e.g. value of 11 means the aperture was F/11
ISO	Camera sensor sensivity, in ISO units, similar to film sensivity	Some Nikon and Canon cameras use proprietary format for this setting. In files from those cameras, the value may be missing if they were processed by a software that only preserves standard tags
WB	White Balance setting aka Color Mode, aka Light Source Type, aka Color Temperature; Similar to kind of film (daylight, incandescent, etc).	Some cameras use proprietary format for this setting. In addition to standard format, proprietary formats of this setting are currently analyzed for Canon, Nikon and Olympus cameras. The actual value depends on how the manufacturer calls the respective setting
Focal Length	Focal Length of the camera lens; For zoom lenses - the Focal Length used for this picture	The value is in millimeters. In this version, the value is not converted to 35mm equivalence
Flash	Flash - just "Fired" or "Not fired"	This does not depend on flash setting on camera (Auto/On/Off/Red-eye/Slow Sync, etc). For example, if the flash was set to ON, but was not fired because it was not fully charged, the value will be "Not fired".
AutoFocus	AutoFocus enabled/disabled and AutoFocus mode: single shot or continous.	Currently, this setting is only shown for certain Nikon D-SLR cameras. AF-S - single shot autofocus; AF-C - continous autofocus.
Camera/Software information
Maker	Camera maker
Model	Camera model
Lens	Lens used for this shot (for interchangeable lens cameras)	In this version, this setting is only supported for certain Nikon DSLRs. The column shows two pairs of values: minimum and maximum focal length in millimeters and maximum apertures at the wide end and at the tele end of the range, such as 18-70 mm F/3.5-4.5
Software	Name and/or version of the software that recorded this image	For unmodified digital camera files, this should be a version of camera's firmware (important when checking for upgrade availability)
EXIF Version	EXIF version
Camera settings for the shot
EV +/-	Automatic Exposure (AE) compensation, aka Exposure Bias. The value is a correction applied by the user to the exposure selected by the camera. The value is measured in photographic "steps" aka EV.	For example, +0.25 means a quarter of the step brighter, -1 means one step darker. "none" - no correction applied
AE Program	Automatic Exposure (AE) program. Some cameras just call it "Mode". Determines how the camera chooses the exposure (Program, Aperture Priority, Shutter Priority, Manual and the like)
Metering	Metering mode. Which part of the frame is used to measure the exposure. Average, Center-Weighted, Spot and the like
Information about the image
Date/Time	Date and time the image was recorded
Time Shot	Time when the picture was shot	This field is expected to be always preserved by processing software
Time Digitized	Time when the picture was digitized
Description	Image description
User Comment	Comment recorded by the user	EXIF supports user comments in many character sets; TTNview will only show user comment if it's in ASCII code. TTNview will take the the text into the square brackets ([]) in order to distinguish between missing comment and comment containing white spaces.
File Source	File source; The value is either "digital camera" on nothing	Not all cameras write this value, therefore you can't rely on this setting to distinguish between original and scanned/processed image. Please check images from your particular camera.
Scene Type	Scene Type; The value is either "photographed" on nothing; "Photographed" is intended to designate that the scene was directly photographed	Not all cameras write this value, therefore you can't rely on this setting to distinguish between original and scanned/processed image. Please check images from your particular camera.
Height	Image height, in pixels
Width	Image width, in pixels
Res Unit	Unit in which X and Y resolution are measured	Either "inch" or "cm"
Res X	X Resolution, measured in pixels per Resolution Unit
Res Y	Y Resolution, measured in pixels per Resolution Unit
Color space	Color space of the image	The value is 1 when the image is in sRGB color space (industry standard), other values mean non-sRGB. Some cameras currently implement AdobeRGB, but the EXIF standard does not yet define how this should be encoded in the image. In future versions, if we'll find that information in the "maker note", we will display it in this column.

TTNview can navigate directories and open files using their standard Windows associations.

In future, we plan TTNview to be able to do the following: