Pentax EXIF data


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airconvent

Senior Member
Apr 12, 2005
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#1
Hi
Just curious as to how to read the EXIF data for the pentax images.
Eg, The one below was displayed using my ACDSee 10.
Is there a way for the EXIF data to contain the identity of the lens used?
Also, what are those information in red below?
Thanks


Orientation of image: 1
Image input equipment manufacturer: PENTAX
Image input equipment model: PENTAX K20D
Software used: Adobe Photoshop CS4 Macintosh
Exposure time: 0.0004
F number: 3.2
Exposure program: 3
ISO speed rating: 640
Exposure bias: 0
Metering mode: 2
Flash: 16
Lens focal length: 100
Sensing method: 2
Custom rendered: 1
Exposure mode: 0
White balance: 0
Focal length in 35 mm film: 150
Scene capture type: 0
Contrast: 0
Saturation: 0
Sharpness: 1
Subject distance range: 1
 

Gengh

New Member
May 6, 2007
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#2
Hmm... seems like your ACDSee is displaying the exif in some sort of semi-encoded form, so a lot of the fields are still left as numbers. I think when fully decoded, it should look something like what I have below. AFAIK, Picasa and Faststone both decode correctly for me, and the exif below was extracted using Exif-O-Matic.

Don't think Pentax's exif includes the exact details of the lens used, but only records the focal length and f-number. If you right-click (realised you're using a MAC, but this is for Windows Vista) on the jpg file and click Properties>details, and scroll down to "Advanced photos", they actually have "Lens maker" and "Lens model", but I've never seen these fields filled in before....


____________________________________________
Make PENTAX
Model PENTAX K20D
Orientation Top, left side (Horizontal / normal)
X Resolution 72 dots per inch
Y Resolution 72 dots per inch
Resolution Unit Inch
Software SILKYPIX(R) Developer Studio Version 3.0.21.2
Date/Time 2009:09:26 22:08:29
YCbCr Positioning Datum point
Exposure Time 1/30 sec
F-Number F11
Exposure Program Manual control
ISO Speed Ratings 100
Exif Version 2.21
Date/Time Original 2009:09:27 04:13:22
Date/Time Digitized 2009:09:27 04:13:22
Components Configuration YCbCr
Exposure Bias Value 0 EV
Metering Mode Spot
Flash Flash did not fire, auto
Focal Length 18.0 mm
FlashPix Version 1.00
Color Space sRGB
Exif Image Width 3000 pixels
Exif Image Height 1691 pixels
Sensing Method One-chip color area sensor
Custom Rendered Custom process
Exposure Mode Manual exposure
Focal Length 35 27mm
Scene Capture Type Standard
Subject Distance Range Distant view
Compression JPEG (old-style)
Thumbnail Offset 13136 bytes
Thumbnail Length 4282 bytes
Thumbnail Data [4282 bytes of thumbnail data]
- Pentax Makernote
- Interoperability
Interoperability Index Recommended Exif Interoperability Rules (ExifR98)
Interoperability Version 1.00
- Jpeg
Data Precision 8 bits
Image Height 1691 pixels
Image Width 3000 pixels
Number of Components 3
Component 1 Y component: Quantization table 0, Sampling factors 1 horiz/2 vert
Component 2 Cb component: Quantization table 1, Sampling factors 1 horiz/1 vert
Component 3 Cr component: Quantization table 1, Sampling factors 1 horiz/1 vert
 

creampuff

Senior Member
Jul 11, 2006
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#3
I use Adobe Bridge and the exif data shows the lens used. The only exception is if the lens is very new whereby the lens focal length is shown but not the actual lens name. but an update down the road usually solves this.
 

airconvent

Senior Member
Apr 12, 2005
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#4
OK Thanks Fellas.
Looks like ACDSee may not be optimised for Pentax EXIF. :)
 

CY_OH

New Member
Jun 24, 2004
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Ang Mo Kio
www.flickr.com
#5
You can try PhotoME, which can show full lens name (including 3rd Party), shutter count, EV value, manufacturing date, SR values.
 

Gengh

New Member
May 6, 2007
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#6
Oh, my bad about the lens data then.... Strange, I've never seen any info on the details of the lenses I used in the exif, even for relatively old lenses. :dunno: Doesn't matter, it's of no consequence really, from the focal length I more or less know which lens was used.
 

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