Closed zepouet closed 9 years ago
You probably want the FNumber
tag.
The exifstat command (go get github.com/rwcarlsen/goexif/exifstat
) can print off all of the tags found in the image:
$ exifstat foo.jpg
---- Image 'foo.jpg' ----
YCbCrPositioning: [2]
ThumbJPEGInterchangeFormat: [10924]
SubSecTimeOriginal: "64"
GPSVersionID: [2,3,0,0]
DateTime: "2015:02:21 14:48:27"
Artist: ""
GPSInfoIFDPointer: [9034]
ISOSpeedRatings: [100]
InteroperabilityIFDPointer: [8806]
FocalPlaneXResolution: ["5184000/894"]
CustomRendered: [0]
UserComment: ""
Make: "Canon"
ExposureTime: ["1/200"]
FNumber: ["18/10"]
DateTimeOriginal: "2015:02:21 14:48:27"
ExposureBiasValue: ["0/1"]
MeteringMode: [5]
Flash: [16]
ApertureValue: ["106496/65536"]
SubSecTime: "64"
SubSecTimeDigitized: "64"
PixelYDimension: [3456]
ExposureMode: [0]
InteroperabilityIndex: "R98"
FocalPlaneResolutionUnit: [2]
ResolutionUnit: [2]
ExifIFDPointer: [360]
ThumbJPEGInterchangeFormatLength: [13501]
ComponentsConfiguration: ""
FocalLength: ["50/1"]
ColorSpace: [1]
FocalPlaneYResolution: ["3456000/597"]
Model: "Canon EOS REBEL T4i"
XResolution: ["72/1"]
DateTimeDigitized: "2015:02:21 14:48:27"
WhiteBalance: [0]
SceneCaptureType: [0]
PixelXDimension: [5184]
Orientation: [1]
YResolution: ["72/1"]
Copyright: ""
ExifVersion: "0230"
ShutterSpeedValue: ["499712/65536"]
MakerNote: ""
FlashpixVersion: "0100"
ExposureProgram: [3]
This could maybe help you find the tag/info you are looking for.
Hello,
Thanks you very much for your help. It is nice.
Do you know if images coming from Sony Alpha or other manufacturer will have problem to be decoded ? Is exif a specification or it must be adapted to differents origins ?
Best regards, Nicolas
Hello,
Sorry to open a ticket for this question but I am lost. I am reading exif specification to calculate FStop but I am wrong...
No way to calculate it. Do you have any idea to convert A / B to a readable F-STOP ?
Thanks a lot ! Best regards,