Product Review: Royaltek RGM-3800 Geologger

I got this product almost a year ago in preparation for a long trip to South America. I looked into several options at the time, and this one had a good price point and the capacity that I needed for a trip lasting over two months.

The Royaltek RGM-3800 has space for 650,000 data points when recording standard information (Longitude & Latitude) with capacity decreasing when you add elevation, velocity, etc. Logging in this manner allows for 180 days of recording, 12 hours a day.

The one drawback to this particular device and most others of its size is the limited battery life. On two AAAs the battery lasts between 6-8 hours, so when outdoors or in remote places it limits the usefulness or makes you bring along a ton of extra batteries.

I got around this by using an external battery (Digipower shown) (connected by the USB port) which added a lot more capacity. [On the technical side, two AAAs usually have around 900mAh, and the Digipower device has 3400mAh, giving approximately 4X longer life.] With this battery pack, I got about 3-4 days use out of it between charges.

The log files are stored in the .nmea format, compatible with many geotagging programs, but I've found a useful program for converting .nmea files to KMZ/KML (Google Earth) or GPX if you need to convert to different formats.

Overall a great product I’d recommend for anyone interested in Geotagging their photos on a long or short trip.

Obama's Inauguration - That's what over 1 million people looks like

I got this link from a post on the Chase Jarvis blog.  The incredible satalite imagery at GeoEye took a snapshot of the inauguration, with over 1 million people in attendance. What a moment in time to capture so high above the earth!

Image Courtesy of GeoEye.

The high resolution image is even better and shows a much larger area.

Alamy Upsize Tool

I’ve recently started using Alamy for an avenue of image sales. One of their requirements is that the image must be over 48Mb uncompressed. At first I was a little confused as to what that means for the actual image size and the resulting dimensions that are required. After finding some info on the web with formulas, etc. I came up with this spreadsheet that allows you to easily figure out how big your new files has be to get the right size file. Simply enter in your original image dimensions, desired final uncompressed file size, and the resulting new image dimensions appear in the cells below. Try it out below.



This information is all I need to enter into many resizing software programs in order the get the right file size every time.

My Geotagging Workflow

Google Earth Screenshot - Iguazu Falls (Argentina/Brazil) with images and Data Logger Track

1.) Sync Camera time with Local Time

2.) Take photos while logging your location continuously with a Data Logger

3.) Import JPEG photos and Data Logger log (.nmea format) onto computer

4.) Use software locr to combine JPEGs and location log, embed into file. This program can also export your geolog file and photos into Google Earth. And if you happen to forget to sync your camera time to your local time, you can shift this time by minute/second/hours to match your geolog (which will be on UTC time)

5.) If using Picasa, the newly geotagged photos won’t be recognized by this program (something to do with the format of the GPS data). I got around this by using this GUI to change the format of the GPS EXIF data to something Picasa could read. If you don’t use Picasa then you shouldn’t need this second step.

6.) More on Geotagging RAW images in later posts.

Now as GPS becomes more integrated into cameras, then there will be less need to have separate devices logging your location as you take photos. I haven’t tried any cameras with this integrated technology yet, but I think it’ll become a feature seen in many more models to come.

Theme: Interesting Rock Textures and Formations

After submitting this first image below to a local competition here in Calgary through the Foothills Camera Club, I thought I'd hunt around for some other interesting rock formations in my catalog.  After a bit of searching, I've found these three.

Garganta Del Diablo (Devil's Throat),  Valles Calchaquies, Chile

SD700 IS, 1/60 sec, f/2.8

Mystic Beach, Vancouver Island, Canada

D80, 1/60 sec, f/4.0, ISO100

Atacama Desert, Bolivia

SD700 IS, 1/200 sec, f/5.6

New Secure Digital (SD) Cards - Up to 2TB (2 terabytes!)

I've been looking for a new SD Card this week, and although that wouldn't usually be that newsworthy, I came across some interesting information in my research and "hunt for the best deal".
What blew me away was finding out about the anoucement at CES that a new format - SDXC promises up to 2TB of storage and 300MBps transfer speeds (all theoretical at the moment unfortunately), but according to Engadget,

"The first batch of retail cards will hit before March [2009] with read/write speeds up to 104MBps in unknown capacities"

Not that these new cards would be the "best deal", from from it, but that's a lot of photos!!

The Top 100 Photography Blogs

In my daily searching today I came across this site listing (and summarizing) their Top 100 Photography Blogs. Quite a good list in my opinion and there were a few on there that I hadn't heard of before or that peaked my interest.  I have over 30 photoblogs that I keep track of every day, but far from reading every new post that comes in I'll scan through the RSS feeds through Google Reader.

A few that peaked my interest were:

• Fine Art Photoblog: On this blog, you’ll get to see fine art photography as well as news in the industry.
• Cheapshooter: Cheapshooter will help you learn how to do photography on a budget.
• Photopreneur: Get great information about making money from your photos through this blog.
• Microstock Diaries: Learn how to make money from microstock photography by reading this blog.

Wintry Calgary Nights

Another couple nights shooting in Calgary with cold fingers and toes. Lugging around a tripod, and some patience brought me these shots. A few different locations, all in the NW of Calgary.

Nikon D80, 20 sec, f/13.0, ISO100

Nikon D80, 30 sec, f/16.0, ISO100

Nikon D80, 30 sec, f/22.0, ISO100

Nikon D80, 18 sec, f/6.7, ISO100

Geotagging Your Blog Posts

Being a big fan of Geotagging and with news from the Google LatLong Blog that Blogger now supports geotagging for blog posts, I thought I'd take this opportunity to geotag some older posts (that have relevant locations obviously).

I've added a map gadget to the sidebar of this blog showing all the tagged posts for this blog. Enjoy.