Focal length and aperture in CR2

Hi,
I`v found that aperture and focal length that returned from libraw is different. https://dl.dropboxusercontent.com/u/7392238/Raw%20camera%20samples/IMG_0...

From libraw:
1. Focal length - 28.0
2. Aperture - 6,4
3. Shutter - 24,7

From exiftool:
1. Focal length - 24
2. Aperture - 22,0
3. Shutter - 20

Am I miss something?

Thanks in advance,
Victor

Forums: 

According to raw-identify

According to raw-identify from LibRaw 0.16:
ISO speed: 320
Shutter: 24.7 sec
Aperture: f/6.4
Focal length: 28.0 mm

According to Exiftool 9.61:
== Exif section
F Number : 6.3
ISO : 320
Shutter Speed Value : 24.7
Aperture Value : 6.4
Focal Length : 28.0 mm
== Makernotes sections
Target Aperture : 6.3
Target Exposure Time : 25.4
Base ISO : 308

The values of Aperture: 22 and Focal Length: 24 are from lens limits section:
Max Focal Length : 105 mm
Min Focal Length : 24 mm
Min Aperture : 23 (real, not averaged)

From my point, LibRaw values are nearly correct (there are two Exposure time values, LibRaw shows Exif section, not Makernotes

-- Alex Tutubalin

Thank you for the report.

Thank you for the report. Flash data is parsed only for old Canon (CRW) files. To be added to EXIF parser section on the next update.

-- Alex Tutubalin