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by Bart Arondson

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4,942 reputation
11547
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age 34
visits member for 3 years, 10 months
seen May 18 at 6:33

mmmm, coffee


Jan
29
answered What options do I have for a normal and fast prime lens for a Canon APS-C camera?
Jan
29
awarded  Autobiographer
Jan
19
comment What can you do with embedded GPS locally?
Thanks, that showed me what I was doing wrong (the calculation is /60/60 for seconds instead of *.01/60).
Jan
19
comment What can you do with embedded GPS locally?
I looked at the exif data, and it says Latitude is "45.00, 30.00, 32.27" and Longitude is "73.00, 33.00, 6.77" (other fields indicate N and W). 45+30/60+.01*32.27/60=45.505378. 73+33/60+.01*6.77/60=73.551128. I plugged 45.505378, -73.551128 into google maps, and looked up that building, and used the ruler tool (from labs) to measure from the point I calculated to the front of that building: got about 430 yards. I'm just guessing on those calculations, though, really; if you know of a more correct way to use those numbers I'd love to hear it.
Jan
19
comment What can you do with embedded GPS locally?
There is an EXIF tag in the file you shared labelled "Direction of movement" (0x000f) and it has a value of 94.41 (I assume that's in degrees, so East?). But that is certainly different that orientation! If its name accurately describes its behavior, it would only be useful if you take pictures pointed in the direction in which you were moving. There is also a tag "Orientation" and its value is "top - left" so I think that is more likely landscape vs. portrait. No EXIF tag includes "compass" in its label. You might try some experiments with 'exif -l' and 'exif -t 0x000f filename'
Jan
19
comment What can you do with embedded GPS locally?
The location information appears to be off by about 430 yards. Is that typical accuracy for that camera? Is there a different (more accurate (I assume also more power-hungry)) GPS mode?
Jan
18
awarded  Commentator
Jan
18
comment What can you do with embedded GPS locally?
+1 to wallyk's question: please post a photo somewhere with all the EXIF data intact for the rest of us to play with!
Jan
18
comment What can you do with embedded GPS locally?
Are you sure that the spec means "the direction that you were facing" by 'orientation'? When I hear 'orientation' my first thought is, "did I have my camera held in landscape or portrait mode."
Jan
18
comment Is it worth it to buy an FD-EOS adapter, or is it better to exchange a misbought lens?
A list of mounts that you can adapt to EOS is available at bobatkins.com/photography/eosfaq/manual_focus_EOS.html (I have M42, Nikon, and T adapters).
Jan
18
answered Is it worth it to buy an FD-EOS adapter, or is it better to exchange a misbought lens?
Jan
17
comment What are some smaller digital cameras with remote shutter releases?
On top of that, I believe you also need to enable the shutter release by running a script. I think you'd need to scroll through a menu or two each time you turn on the camera in order to start the shutter release script. If the goal is to minimize the physical requirements needed to use the camera, CHDK might not be the answer.
Jan
16
comment Canon SX 30IS user opinions wanted
See also photo.stackexchange.com/questions/6908/… and photo.stackexchange.com/questions/6731/… where I've added some answers, and some other cameras have been mentioned. I haven't used the SX30IS but I was very happy with my SX10IS.
Jan
16
answered What can you do with embedded GPS locally?
Jan
14
comment What are the pros/cons of a Canon SX30IS compared to Fuji HS 10 / HS 20?
As much as I love CHDK, I have to say that my one experience with CHDK+RAW did not turn out very well. It may have been because my camera was already one generation old when I started using it, or because I run Linux and there's limited support for RAW on Linux, or because I don't care enough about post-processing (I don't even shoot RAW with my 30D) to spend enough time trying to make it work, but I was never able to load a single RAW image from my SX10IS+CHDK. YMMV of course, and if anyone's been successful with an SX30+CHDK+RAW, that would be good to hear.
Jan
14
answered What are the pros/cons of a Canon SX30IS compared to Fuji HS 10 / HS 20?
Jan
13
answered How should I chose a manual focusing screen for my Pentax K10D?
Jan
13
comment Can M42 lenses be mounted on Canon EF-S (with adapter)?
More generally, I've also found the table at bobatkins.com/photography/eosfaq/manual_focus_EOS.html helpful.
Jan
12
comment How do you handle the varying sizes of filters in your kit?
Okay, I put the 52-77mm filter stack onto my Canon FD 35-70mm lens. With the FD-EOS adapter, which I've heard acts as an extension tube with about a 1.25x multiplier, I saw no vignetting at 35mm (so roughly like a 45mm lens). Then I held the filter stack up in front of my 10-22mm lens: at 22mm, I still saw the outside of the filter stack, but at 10mm I could see the inside of the filter stack. The effect was first visible at around 16 or 17mm. So I would say that you might start to see vignetting at 17mm, but shouldn't see vignetting at any focal length longer than that.
Jan
12
answered Anyone got some good, simple introductory lens guides?