When using the Canon-provided Photo Editor ZoomBrowser EX, you can read shoot data (see list below) associated with each image file. If you alter the ORIGINAL JPEG file with other third-party photo editing software, make sure to save the altered version under a different name if you don't want to lose the shoot data, or copy the shoot data onto a text file for future reference before saving it.
Below are shoot data captured by the Canon G5 with each image file (I deleted the File Name and Owner's Name from the list):
11/1/2003 9:58:27 AM
Shooting Mode: Aperture-Priority AE
Photo Effect Mode: Off
Tv( Shutter Speed ): 1/60
Av( Aperture Value ): 8.0
Metering Mode: Evaluative
Exposure Compensation: 0
ISO Speed: 100
Lens: 7.2 - 28.8mm
Focal Length: 7.2mm
Digital Zoom: None
Image Size: 2592x1944
Image Quality: Superfine
Flash: On
Flash Type: Built-In Flash
Flash Exposure Compensation: 0
Red-eye Reduction: On
Shutter curtain sync: 1st-curtain sync
White Balance: Auto
AF Mode: Single AF
AF Range Mode: Macro
File Size: 2526KB in JPEG Super Fine and Large mode
Drive Mode: Single-frame shooting
I applied Unsharp Mask, Auto Contrast and Auto Color on the 2.5MB file and saved it in High Mode with a value of 8 using Photoshop (1MB).
Above is a portion of the Photoshop-enhanced image, displayed here at 100% resolution.
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