Andy that is a good question. I do not have the answer but over the years I have been using two different EXIF readers. They show different data so I use both. Both report what you are seeing as to the different times. If you figure it out let us know!!! And SRI but I do not remember for sure
what the name of readers are. I am thinking The first one is Firefox and the second one is Opanda.
Firefox
Quote:
EXIF IFD0
Camera Make {0x010F} Canon
Camera Model {0x0110} Canon EOS 5D
Picture Orientation {0x0112} normal (1)
Last Modified Date/Time {0x0132} 2011:08:28 13:20:07
EXIF Sub IFD
Exposure Time (1 / Shutter Speed) {0x829A} 1/250 second ===> 0.004 second
Lens F-Number / F-Stop {0x829D} 28/10 ===> ƒ/2.8
ISO Speed Ratings {0x8827} 3200
Original Date/Time {0x9003} 2011:08:26 21:39:52
Shutter Speed Value (APEX) {0x9201} 524288/65536
Shutter Speed (Exposure Time) 1/256 second
Aperture Value (APEX) {0x9202} 196608/65536
Aperture ƒ/2.83
Flash {0x9209} Flash did not fire, compulsory flash mode
Focal Length {0x920A} 200/1 mm ===> 200 mm
Image Width {0xA002} 800 pixels
Image Height {0xA003} 640 pixels
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Opanda
Quote:
Camera Maker: Canon
Camera Model: Canon EOS 5D
Lens: EF70-200mm f/2.8L IS USM
Image Date: 2011-08-26 19:04:00 +0000
Focal Length: 200mm
Aperture: f/2.8
Exposure Time: 0.0040 s (1/250)
ISO equiv: 3200
Exposure Bias: none
Metering Mode: Matrix
Exposure: aperture priority (semi-auto)
White Balance: Manual
Flash Fired: No (enforced)
Orientation: Normal
Color Space: Adobe RGB (1998)
GPS Coordinate: undefined, undefined
Photographer: Andy Zavoina
City: Killeen
Province/State: TX
Copyright: (C) Andy Zavoina
Caption: EHS v KHS
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