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Old Jun 15, 2010, 4:14 PM   #11
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Location: Savannah, GA (USA)
Posts: 22,371

Originally Posted by JimC View Post
Yes. That worked. The forums software did not modify the image, since it's within the maximum limits allowed for both dimensions and file size, and the EXIF is relatively intact (we can see the camera settings used, etc.). If the forums software would have modified it, the EXIF would not be there (and it's there, so you found the right options for resizing an image for posting here using PSP).
For example, I can now tell this about your photo using PhotoME

[ Overview ]
File name: bike1024.jpg
File type: JPEG
File size: 144.5 KB
Creation date: 6/8/2010 14:17
Last modification: 6/15/2010 17:03
Make: Canon
Software: Paint Shop Pro Photo 12.00
Dimension: 1024 x 683 px (0.7 MP, 3:2)
Focal length: 85 mm (equiv. 138 mm)
Aperture: F6.3
Exposure time: 1/400"
ISO speed rating: 400/27
Program: Shutter priority
Metering Mode: Pattern
White Balance: Manual
Flash: Flash did not fire, compulsory flash mode

[ JPEG ]
Application Segment 1 (Exif): 0x00000006
Application Segment 2 (ICC Profile): 0x00001E32
Encoder: Corel Paint Shop Pro PHOTO, Quality: 20
and maybe some other software or cameras
Encoder Signature: D1DC48D911055BC533779D6E086F7242:111111
Color Mode: RGB color
Subsampling ratio of Y to C: YCbCr4:4:4
Encoding Process: Baseline DCT, Huffman coding
Bits per Sample: 8 bps
Image Height: 683 px
Image Width: 1024 px
Number of image components in frame: 3 comp.

[ Image ]
Manufacturer: Canon
Image input equipment model: Canon EOS DIGITAL REBEL XSi
Orientation of image: 0 (top/left)
Image resolution in width direction: 72 dpi
Image resolution in height direction: 72 dpi
Unit of X and Y resolution: inch
Software: Paint Shop Pro Photo 12.00
File change date and time: 2010-06-15 16:17:28
Y and C positioning: Co-Sited
Exif IFD Pointer: 0x000000F8

[ Thumbnail Info ]
Compression scheme: JPEG (old-style)
Image resolution in width direction: 72 dpi
Image resolution in height direction: 72 dpi
Unit of X and Y resolution: inch
Offset to JPEG SOI: 0x00000468
Bytes of JPEG data: 6564 bytes
Y and C positioning: Co-Sited

[ Camera ]
Exposure time: 1/400"
F number: F6.3
Exposure program: Shutter priority
ISO speed rating: 400/27
Exif version: 2.21
Date and time of original data generation: 2010-06-08 14:17:15
Date and time of digital data generation: 2010-06-08 14:17:15
Meaning of each component: YCbCr
Shutter speed: 8.63 Tv (1/394.8")
Aperture: 5.38 Av (F6.4)
Exposure bias: 0 EV
Metering mode: Pattern
Flash: Flash did not fire, compulsory flash mode
Lens focal length: 85 mm
User comment:
DateTime subseconds: 0.3"
DateTimeOriginal subseconds: 0.3"
DateTimeDigitized subseconds: 0.3"
Supported Flashpix version: 1.0
Color space: sRGB
Image width: 1024 px
Image height: 683 px
Interoperability IFD Pointer: 0x000003DA
Focal plane X resolution: 4865.6 ppi
Focal plane Y resolution: 4876.71 ppi
Focal plane resolution unit: inch
Custom image processing: Normal process
Exposure mode: Auto exposure
White balance: Manual
Scene capture type: Standard

[ Interoperability ]
Interoperability Identification: R98: DCF basic file (sRGB)
Interoperability Version: 1.0

[ ICC Profile ]
Profile CMM Type: LinoColor CMM
Profile Version: 2.1.0
Profile Class: Display Device Profile
Data Color Space: RGB
Profile Connection Space: XYZ
Profile Date Time: 1998-02-09 06:49:00
Profile File Signature: "acsp"
Primary Platform: Microsoft Corporation
CMM Flags: Not Embedded, Independent
Device Manufacturer: Hewlett-Packard
Device Model: sRGB
Media Attributes: Reflective, Glossy, Positive Polarity, Color
Device Attributes: Not set
Rendering Intent: Perceptual
Connection Space Illuminant: [0.96420, 1.00000, 0.82491]
Profile Creator: Hewlett-Packard
Profile ID: Not set
Profile Copyright: Copyright (c) 1998 Hewlett-Packard Company
Profile Description: sRGB IEC61966-2.1
Media White Point: [0.95045, 1.00000, 1.08905]
Media Black Point: [0.00000, 0.00000, 0.00000]
Red Matrix Column: [0.43607, 0.22249, 0.01392]
Green Matrix Column: [0.38515, 0.71687, 0.09708]
Blue Matrix Column: [0.14307, 0.06061, 0.71410]
Device Manufacturer Description: IEC http://www.iec.ch
Device Model Description: IEC 61966-2.1 Default RGB colour space - sRGB
Viewing Cond. Description: Reference Viewing Condition in IEC61966-2.1
Viewing Cond. Illuminant: [19.64450, 20.37180, 16.80890]
Viewing Cond. Surround: [3.92889, 4.07439, 3.36179]
Viewing Cond. Illuminant Type: D50
Luminance: [76.03647, 80.00000, 87.12462]
Measurement Observer: CIE 1931 standard colorimetric observer
Measurement Backing: [0.00000, 0.00999, 0.00003]
Measurement Geometry: Unknown
Measurement Flare: 0%
Measurement Illuminant: Unknown
Technology: Cathode Ray Tube Display
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Old Jun 15, 2010, 4:22 PM   #12
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Location: USA
Posts: 275

ok....thank you I am learning something new every day!

thanks again
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Old Jun 15, 2010, 4:29 PM   #13
Join Date: Jun 2003
Location: Savannah, GA (USA)
Posts: 22,371

No problem.

Note that if you want even more data to be visible in the image (focus points, drive mode, etc.), I'd suggest using something other than PSP (like the free Irfanview I mentioned earlier), as PSP is stripping out the Maker Notes section of the metadata in the image header (a common problem with many editors). But, members can still see the main EXIF data in images (just not as much detail as you'd get using an editor that doesn't strip out the maker notes section).

PSP is nice for editing though (but if you use it, expect to see some data stripped out). So, for help with troubleshooting issues (taking things like focus mode, drive mode, focus points etc. into consideration), I'd probably use something different to downsize the unedited originals for posting so that members can tell more about the images than they can from looking at a Paint Shop Pro edited version.
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