Bobspez wrote:
I have used exiftool in the past for things like shutter count. I'll posted 2 jpgs below, one taken with a d7000 and one taken with a Nikon 1 J1, but don't think there's any focus data. Maybe only certain newer cameras store that data. Maybe Photoshop messes with that data?
This is the flower i saved as test1.jpg the 2nd as test2.jpg this used the centre focus point.
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exiftool -s test1.jpg
ExifToolVersion : 10.40
FileName : test1.jpg
Directory : .
FileSize : 4.5 MB
FileModifyDate : 2017:03:27 03:05:40+01:00
FileAccessDate : 2017:03:27 03:08:00+01:00
FileInodeChangeDate : 2017:03:27 03:05:50+01:00
FilePermissions : rw-r--r--
FileType : JPEG
FileTypeExtension : jpg
MIMEType : image/jpeg
ExifByteOrder : Little-endian (Intel, II)
Make : NIKON CORPORATION
Model : NIKON 1 J1
Orientation : Horizontal (normal)
XResolution : 300
YResolution : 300
ResolutionUnit : inches
Software : Ver.1.40
ModifyDate : 2015:06:18 15:34:35
YCbCrPositioning : Co-sited
ExposureTime : 1/100
FNumber : 9.0
ExposureProgram : Shutter speed priority AE
ISO : 100
SensitivityType : Recommended Exposure Index
ExifVersion : 0230
DateTimeOriginal : 2015:06:18 15:34:35
CreateDate : 2015:06:18 15:34:35
ComponentsConfiguration : Y, Cb, Cr, -
CompressedBitsPerPixel : 4
ExposureCompensation : 0
MaxApertureValue : 5.7
MeteringMode : Spot
LightSource : Unknown
Flash : No Flash
FocalLength : 280.0 mm
MakerNoteVersion : 2.10
Quality : Fine
WhiteBalance : Auto
FocusMode : AF-S
FlashSetting :
FlashType :
WhiteBalanceFineTune : 0 0
WB_RBLevels : 1.75 1.83984375 1 1
ProgramShift : 0
ExposureDifference : 0
FlashExposureComp : 0
ImageBoundary : 0 0 3872 2592
CropHiSpeed : Off (3904x2606 cropped to 3904x2606 at pixel 0,0)
SerialNumber : 32134098
VRInfoVersion : 0101
VibrationReduction : On
VRMode : Unknown (1)
ActiveD-Lighting : Off
PictureControlVersion : 0100
PictureControlName : Standard
PictureControlBase : Standard
PictureControlAdjust : Default Settings
PictureControlQuickAdjust : Normal
Brightness : Normal
HueAdjustment : None
FilterEffect : n/a
ToningEffect : n/a
ToningSaturation : n/a
TimeZone : -05:00
DaylightSavings : Yes
DateDisplayFormat : M/D/Y
ISOExpansion : Off
ISO2 : 100
ISOExpansion2 : Off
LensType : G VR [5]
Lens : 55-300mm f/4.5-5.6
FlashMode : Did Not Fire
ShootingMode : Continuous, Auto ISO
LensFStops : 9.33
ShotInfoVersion : 0400
NoiseReduction : Off
ColorBalanceVersion : 0400
LensDataVersion : 0401
RetouchHistory : None
ImageDataSize : 3752241
ShutterCount : 3758
FlashInfoVersion : 0200
VariProgram :
HighISONoiseReduction : Off
AFInfo2Version : 0200
ContrastDetectAF : Off
AFAreaMode : Single
PhaseDetectAF : On (73-point)
PrimaryAFPoint : E8 (Center)
AFPointsUsed : E8 AFFineTune : Off
AFFineTuneIndex : n/a
AFFineTuneAdj : 0
SubSecTime : 00
SubSecTimeOriginal : 00
SubSecTimeDigitized : 00
FlashpixVersion : 0100
ColorSpace : sRGB
ExifImageWidth : 3872
ExifImageHeight : 2592
InteropIndex : R98 - DCF basic file (sRGB)
InteropVersion : 0100
SensingMethod : One-chip color area
FileSource : Digital Camera
SceneType : Directly photographed
CFAPattern : [Red,Green][Green,Blue]
CustomRendered : Normal
ExposureMode : Auto
DigitalZoomRatio : 1
FocalLengthIn35mmFormat : 756 mm
SceneCaptureType : Standard
GainControl : None
Contrast : Normal
Saturation : Normal
Sharpness : Normal
SubjectDistanceRange : Unknown
LensModel : VR 55-300mm f/4.5-5.6G
Compression : JPEG (old-style)
ThumbnailOffset : 20204
ThumbnailLength : 8426
Rating : 0
MPFVersion : 0100
NumberOfImages : 2
MPImageFlags : Dependent child image
MPImageFormat : JPEG
MPImageType : Large Thumbnail (full HD equivalent)
MPImageLength : 871511
MPImageStart : 3818368
DependentImage1EntryNumber : 0
DependentImage2EntryNumber : 0
ImageWidth : 3872
ImageHeight : 2592
EncodingProcess : Baseline DCT, Huffman coding
BitsPerSample : 8
ColorComponents : 3
YCbCrSubSampling : YCbCr4:2:2 (2 1)
Aperture : 9.0
AutoFocus : On
BlueBalance : 1.839844
ImageSize : 3872x2592
LensSpec : 55-300mm f/4.5-5.6 G VR [5]
PreviewImage : (Binary data 871511 bytes, use -b option to extract)
Megapixels : 10.0
RedBalance : 1.75
ScaleFactor35efl : 2.7
ShutterSpeed : 1/100
SubSecCreateDate : 2015:06:18 15:34:35.00
SubSecDateTimeOriginal : 2015:06:18 15:34:35.00
SubSecModifyDate : 2015:06:18 15:34:35.00
ThumbnailImage : (Binary data 8426 bytes, use -b option to extract)
CircleOfConfusion : 0.011 mm
FOV : 2.7 deg
FocalLength35efl : 280.0 mm (35 mm equivalent: 756.0 mm)
HyperfocalDistance : 782.79 m
LightValue : 13.0
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The 2nd image had this to say no focus information other than it was manual on a d7000
I did do the same thing with the 2nd photo but couldnt post it as it was too long
so the first jpeg use
exiftool -AFPointsUsed -PrimaryAFPoint nameofimage.jpg
AF Points Used : E8
Primary AF Point : E8 (Center)
the second jpeg had nothing to find.
Its probably better to use on a file that is fresh from the camera rather than saved out of another program.
hope this helps