Canon SX230: an awesome GPS geotagging camera! [REVIEW]

As you may have already read in my mini-review, I’ve been having fun playing with my mother-in-law’s snazzy new camera, the Canon Powershot SX230 HS.

Canon SX230 HS Review & Sample Photoshttp://www.jdhodges.com/review/cameras/canon-sx230-hs-review-sample-photos/My mother in law recently purchased the camera and my wife has one of its predecessors, the SX210. Overall Canon has made some nice enhancements to this latest model and it truly is a splendid little camera for walkabout photography. Its main draw being that it packs an amazing zoom range in a relatively small package…

I knew the SX230 had GPS capabilities built into it, and I actually expected it to be storing GPS data for all the photos I was taking. However, I didn’t see any of the GPS coordinated in the EXIF JPEG data, leading me to believe that the feature wasn’t “on”. So I had a look through the camera’s menus and this morning I enabled the GPS feature on the SX230. The camera quickly locked onto the GPS signals (less than 20 seconds) and then I took the following photo:

Of course what’s super-cool about this camera is that it embeds the GPS data into the photo, using industry standard EXIF data. This way, without any extra effort on your part, you can have a record of where all your photos were taken! This is generally referred to as “geotagging” your photos.

NOTE: you can find my “straight from the camera” JPEG of the US flag over here. Just click the “HUGE” version. With that JPEG, you should be able to view any EXIF data that you mind be wondering about… also, the auto display of EXIF on that image attachment page is courtesy of the thesography plugin for WordPress!

If your software supports reading the EXIF data, then you can also display this info for yourself or others. See the example below:

Here is the EXIF data, as output by the EXIF Viewer FireFox plugin

First, the GPS data:

EXIF GPS IFD

  • GPS Version ID = 0x02,0x03,0x00,0x00
  • GPS Latitude Reference = N
  • GPS Latitude = 37/1,9/1,26255/1000 [degrees, minutes, seconds] ===> 37° 9′ 26.255″ == 37.157293°
  • GPS Longitude Reference = W
  • GPS Longitude = 93/1,13/1,38915/1000 [degrees, minutes, seconds] ===> 93° 13′ 38.915″ == 93.227476°
  • Links to online mapping websites:
  • GPS Altitude Reference = sea level reference (negative value)
  • GPS Altitude = 41247/100 m ===> 412.47 m
  • GPS Time Stamp / UTC Time = 14/1,50/1,1000/1000 [hours, minutes, seconds] ===> 14h 50m 1s
  • GPS Status = measurement in progress
  • GPS Map Datum = WGS-84
  • GPS Date Stamp = 2011:05:05 UTC

Now all the rest of the EXIF data:

  • xpacket = begin=’’ id=’W5M0MpCehiHzreSzNTczkc9d’
  • x:xmpmeta
    • xmlns:x = “adobe:ns:meta/”
    • rdf:RDF
      • xmlns:rdf = “http://www.w3.org/1999/02/22-rdf-syntax-ns#”
      • rdf:Description
        • rdf:about = “”
        • xmlns:xmp = “http://ns.adobe.com/xap/1.0/”
        • xmp:Rating ==> “0”

EXIF IFD0

  • Image Description =
  • Camera Make = Canon
  • Camera Model = Canon PowerShot SX230 HS
  • Picture Orientation = normal (1)
  • X-Resolution = 180/1 ===> 180
  • Y-Resolution = 180/1 ===> 180
  • X/Y-Resolution Unit = inch (2)
  • Last Modified Date/Time = 2011:05:05 21:50:22
  • Y/Cb/Cr Positioning (Subsampling) = co-sited / datum point (2)

EXIF Sub IFD

  • Exposure Time (1 / Shutter Speed) = 1/800 second ===> 0.00125 second
  • Lens F-Number / F-Stop = 56/10 ===> ƒ/5.6
  • ISO Speed Ratings = 100
  • Unknown tag, Tagnum 0x8830 = data ===> 4
  • EXIF Version = 0230
  • Original Date/Time = 2011:05:05 21:50:22
  • Digitization Date/Time = 2011:05:05 21:50:22
  • Components Configuration = 0x01,0x02,0x03,0x00 / YCbCr
  • Compressed Bits per Pixel = 3/1 ===> 3
  • Shutter Speed Value (APEX) = 309/32
    Shutter Speed (Exposure Time) = 1/806.9 second
  • Aperture Value (APEX) = 159/32
    Aperture = ƒ/5.6
  • Exposure Bias (EV) = 0/3 ===> 0
  • Max Aperture Value (APEX) = 159/32 ===> 4.97
    Max Aperture = ƒ/5.6
  • Metering Mode = pattern / multi-segment (5)
  • Flash = Flash did not fire, auto mode
  • Focal Length = 53034/1000 mm ===> 53.03 mm
  • Maker Note = 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  • User Comment (Hex) = 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
    User Comment Character Code = not defined
  • FlashPix Version = 0100
  • Colour Space = sRGB (1)
  • Image Width = 4000 pixels
  • Image Height = 3000 pixels
  • Focal Plane X-Resolution = 4000000/244 ===> 16393.44
  • Focal Plane Y-Resolution = 3000000/183 ===> 16393.44
  • Focal Plane X/Y-Resolution Unit = inch (2)
  • Image Sensing Method = one-chip color area sensor (2)
  • Image Source = digital still camera (DSC)
  • Custom Rendered = normal process (0)
  • Exposure Mode = auto exposure (0)
  • White Balance = auto (0)
  • Digital Zoom Ratio = 4000/4000 ===> 1
  • Scene Capture Type = standard (0)

EXIF IFD1

  • Compression = JPEG compression (6)
  • X-Resolution = 180/1 ===> 180
  • Y-Resolution = 180/1 ===> 180
  • X/Y-Resolution Unit = inch (2)
  • Embedded thumbnail image:

EXIF Interoperability IFD

  • Interoperability Index = R98
  • Interoperability Version = 0100
  • Related Image Width = 4000 pixels
  • Related Image Length = 3000 pixels

Conclusion

I hope this post was helpful in seeing how the SX230 combines an integrated GPS receiver with EXIF data to automatically geotag your photos for you! Please write to me below if you have any questions or comments about the SX230 or its cool GPS feature. 🙂

A special thanks to E, for letting me borrow her cool camera!!!

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