DIY – Remote flash trigger with opto-isolator : Part – I

DIY: Remote Light Trigger with opto isolator  to protect camera. 

Recently i decided to photograph a lot of figurines / curios which were lying around at home. For this, i needed to setup a product  table with a pure white background and also the right set of strobes around it.  Well, i had 2 strobes from ProPhoto and only one  Yangano flash for my 450D. This lead to a delima on  how to  get pure white background and still leave 2 strobes for lighting the product itself. Not wanting to invest in one more flash, i scratched my head and remembered that my dad had an old Vivitar flash from the Canon film days. The problem was, that it was really old and i had no way of syncing it with the other flash / strobes, so this resulted in more head scratching , conclusions :-

 

  1. The flash probably had a trigger voltage which would blow out modern cameras or triggering devices
  2. The flash had a very old adaptor which modern cords did not fit into

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Geo-tagging photographs – Adding location information to your photographs

Discovered a really cool way to add location information to your images (i.e. Geo-tagging photographs ) that too without buying a GPS unit for your camera.

Heres how :-

1. Your mobile phone must have GPS on it.

2. install any of the following apps on the mobile (short list, their could be many more)

  • Latitude from Google
  • GPS logger for Andriod
  • GPS Essentials

Basically you need a phone which can log  GPS data to either the internet or to a file. If you use latitude enable history in the options.

3. Before heading out :-

  • Make sure your camera and mobile clocks (time) are in sync
  • Start the applicaiton from #2 above on your mobile

4. Finish your shoot, come back and switch off the application (else it will keep draining your battery)

  • If you sue latitude the data will on the google latitude site
  • if others, it will be on the mobile so transfer it to your computer

5. Convert the data to a GPX file (with this step you have the latitude and longitude with timestamp recorded perdiodically). You can use http://www.gpsvisualizer.com/

6. Download images from camera to your computer

7. Use any of the following to add the location information to your photos

  • GEOsetter
  • GPicSync

Voila, you are all set !!!!!