posting pictures - info on an image file

  • Thread starter sunslip
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S

sunslip

8
1
Hi alll

i am just about to starting posting some pics but I have heard and seen that jpeg photos contain all sort of info possibly including serial nos of cameras used etc.... I read on another post it was called metadata.. is that true ? let

Do people clean their images before they post them and if so how ?

I take images from my friends and i dont want info passed on
 
L

LEBDOG

347
16
Are you gonna retain the upload to gallery feature Logic? I can not locate this currently and used it to lightly insert images in to posts.

I am not complaining, just curious! Beggars can't be choosers!
 
Papa

Papa

Supporter
2,474
163
yes sunslip, digital images have metadata, which can include the camera manufacturer and model, shutter speed, aperture, date and time, etc.

i've just checked, and the metadata does not include the camera serial number.

i've just downloaded several images from the board, including one of mine that I know had metadata before I uploaded it, and found that all the identifying data in the metadata of all of them was completely blank. apparently, the metadata is dropped when the image is uploaded.


Papa
 
L

LEBDOG

347
16
I would be much more concerned with the GEOTAG which the iphone uses to insert the GPS location of the photo in the image somehow. Yikes!

Again, I am not really concerned with this GPS, I disable it; but I wanna know about the upload to gallery feature?
 
Papa

Papa

Supporter
2,474
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LEBDOG said:
I would be much more concerned with the GEOTAG which the iphone uses to insert the GPS location of the photo in the image somehow.
Click to expand...

i just checked again, none of this data, including the geotag, is available from the images that have been uploaded to the board.

i've read that this is not necessarily the case elsewhere, like on some photo-sharing sites, but it seems as if Logic has already got us covered here.

Papa
 
C

CAPO

1,322
38
Logic truly is the man and has our asses covered.

Just thought I would take a moment to relish.
 
S

sunslip

8
1
thanks papa for your tests and everyone else who contributed.. peace
 
E

ent

552
28
I was thinking about the security issues with GPS data being incorporated into new model cameras (even ones that aren't attached the phones). I was wondering if THCFarmer strips EXIF data or at least EXIF GPS data, but it doesn't seem to be the case. It appears GPS EXIF data will remain on a photo uploaded to THCFarmer.


Here is a photo I found on wikipedia that contains a GEOTAG. When I uploaded it and downloaded it from THCFarmer, the GEOTAG information remained in the EXIF data.





Code: 
~/Desktop$ exiftool 27022008184.jpg 
ExifTool Version Number         : 7.89
File Name                       : 27022008184.jpg
Directory                       : .
File Size                       : 100 kB
File Modification Date/Time     : 2010:06:13 10:13:25-07:00
File Type                       : JPEG
MIME Type                       : image/jpeg
JFIF Version                    : 1.01
Exif Byte Order                 : Little-endian (Intel, II)
Make                            : Nokia
Camera Model Name               : N95
Orientation                     : Unknown (0)
X Resolution                    : 300
Y Resolution                    : 300
Software                        : Picasa 3.0
Resolution Unit                 : inches
Y Cb Cr Positioning             : Centered
Exposure Time                   : 1/167
F Number                        : 2.8
ISO                             : 100
Exif Version                    : 0220
Date/Time Original              : 2008:02:27 08:42:50
Create Date                     : 2008:02:27 08:42:50
Components Configuration        : Y, Cb, Cr, -
Shutter Speed Value             : 1/167
Aperture Value                  : 2.8
Light Source                    : Unknown
Flash                           : Auto, Did not fire
Focal Length                    : 5.6 mm
Warning                         : [minor] Unrecognized MakerNotes
Flashpix Version                : 0100
Color Space                     : Uncalibrated
Exif Image Width                : 1024
Exif Image Height               : 768
Custom Rendered                 : Normal
Exposure Mode                   : Auto
White Balance                   : Auto
Digital Zoom Ratio              : 1
Scene Capture Type              : Standard
Gain Control                    : None
Image Unique ID                 : bbaf14e0f6ec5bb7808e82d5fd4a56db
GPS Version ID                  : 0.0.2.2
GPS Latitude Ref                : North
GPS Longitude Ref               : West
GPS Altitude Ref                : Above Sea Level
Compression                     : JPEG (old-style)
Thumbnail Offset                : 3334
Thumbnail Length                : 4627
Current IPTC Digest             : 8f10e2798ac5383f1139c8f3822493a0
By-line                         : Picasa 2.7
Image Width                     : 1024
Image Height                    : 768
Encoding Process                : Baseline DCT, Huffman coding
Bits Per Sample                 : 8
Color Components                : 3
Y Cb Cr Sub Sampling            : YCbCr4:2:0 (2 2)
Aperture                        : 2.8
[B]GPS Altitude                    : 74 m Above Sea Level
GPS Latitude                    : 51 deg 30' 28.10" N
GPS Longitude                   : 0 deg 6' 50.83" W
GPS Position                    : 51 deg 30' 28.10" N, 0 deg 6' 50.83" W[/B]
Image Size                      : 1024x768
Shutter Speed                   : 1/167
Thumbnail Image                 : (Binary data 4627 bytes, use -b option to extract)
Focal Length                    : 5.6 mm
Light Value                     : 10.4

Not just the phones you need to worry about. I know some of the Canon Rebel EOS's are starting to incorporate GPS in the EXIF tags. I would imagine this will become a fairly popular feature in upcoming point and shoot cameras.
 
M

MASSES 420KING

Guest
this is the exact reason i do not post any pictures my freedom is not worth showing off the grow show for any reason
 
L

LEBDOG

347
16
ent said:
Not just the phones you need to worry about. I know some of the Canon Rebel EOS's are starting to incorporate GPS in the EXIF tags. I would imagine this will become a fairly popular feature in upcoming point and shoot cameras.
Click to expand...

I have an EOS XTi, and I believe it must be the new T series with this feature. It is very simple in all devices to turn off GPS tagging. Many here like to share, rather than show off their photos. Sharing photo's often opens ones garden to criticism as much as praise.

Thank you very much for determining this information exists as this is just terrible!
 
M

MASSES 420KING

Guest
sharing showing[it]off same thing imvho it wasnt ment like haha yall cant do this it was ment like sharing
 
logic

logic

Administrator
Staff
6,942
313
ent said:
I was thinking about the security issues with GPS data being incorporated into new model cameras (even ones that aren't attached the phones). I was wondering if THCFarmer strips EXIF data or at least EXIF GPS data, but it doesn't seem to be the case. It appears GPS EXIF data will remain on a photo uploaded to THCFarmer.


Here is a photo I found on wikipedia that contains a GEOTAG. When I uploaded it and downloaded it from THCFarmer, the GEOTAG information remained in the EXIF data.





Code: 
~/Desktop$ exiftool 27022008184.jpg 
ExifTool Version Number         : 7.89
File Name                       : 27022008184.jpg
Directory                       : .
File Size                       : 100 kB
File Modification Date/Time     : 2010:06:13 10:13:25-07:00
File Type                       : JPEG
MIME Type                       : image/jpeg
JFIF Version                    : 1.01
Exif Byte Order                 : Little-endian (Intel, II)
Make                            : Nokia
Camera Model Name               : N95
Orientation                     : Unknown (0)
X Resolution                    : 300
Y Resolution                    : 300
Software                        : Picasa 3.0
Resolution Unit                 : inches
Y Cb Cr Positioning             : Centered
Exposure Time                   : 1/167
F Number                        : 2.8
ISO                             : 100
Exif Version                    : 0220
Date/Time Original              : 2008:02:27 08:42:50
Create Date                     : 2008:02:27 08:42:50
Components Configuration        : Y, Cb, Cr, -
Shutter Speed Value             : 1/167
Aperture Value                  : 2.8
Light Source                    : Unknown
Flash                           : Auto, Did not fire
Focal Length                    : 5.6 mm
Warning                         : [minor] Unrecognized MakerNotes
Flashpix Version                : 0100
Color Space                     : Uncalibrated
Exif Image Width                : 1024
Exif Image Height               : 768
Custom Rendered                 : Normal
Exposure Mode                   : Auto
White Balance                   : Auto
Digital Zoom Ratio              : 1
Scene Capture Type              : Standard
Gain Control                    : None
Image Unique ID                 : bbaf14e0f6ec5bb7808e82d5fd4a56db
GPS Version ID                  : 0.0.2.2
GPS Latitude Ref                : North
GPS Longitude Ref               : West
GPS Altitude Ref                : Above Sea Level
Compression                     : JPEG (old-style)
Thumbnail Offset                : 3334
Thumbnail Length                : 4627
Current IPTC Digest             : 8f10e2798ac5383f1139c8f3822493a0
By-line                         : Picasa 2.7
Image Width                     : 1024
Image Height                    : 768
Encoding Process                : Baseline DCT, Huffman coding
Bits Per Sample                 : 8
Color Components                : 3
Y Cb Cr Sub Sampling            : YCbCr4:2:0 (2 2)
Aperture                        : 2.8
[B]GPS Altitude                    : 74 m Above Sea Level
GPS Latitude                    : 51 deg 30' 28.10" N
GPS Longitude                   : 0 deg 6' 50.83" W
GPS Position                    : 51 deg 30' 28.10" N, 0 deg 6' 50.83" W[/B]
Image Size                      : 1024x768
Shutter Speed                   : 1/167
Thumbnail Image                 : (Binary data 4627 bytes, use -b option to extract)
Focal Length                    : 5.6 mm
Light Value                     : 10.4
Not just the phones you need to worry about. I know some of the Canon Rebel EOS's are starting to incorporate GPS in the EXIF tags. I would imagine this will become a fairly popular feature in upcoming point and shoot cameras.
Click to expand...

Its simple....turn this feature off on your camera....or strip the exif info before uploading images...
 
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