In the “past” the conventional way of taking photos would be to focus on a subject and then take a snapshot. A lot of frustration can happen once photos are loaded onto the computer because shots were out of focus. I experience this a lot with underwater photography as I shoot using a 60mm macro lens and taking photos in strong current while floating (my typical subjects are usually the size of a grain of rice) make it so hard to concentrate on photography.
For instance, this photo I took of two shrimp isn’t the best in focus as I really had a hard time getting a sharp shot. Mind you, my subjects aren’t big. Each shrimp was about 1/4 of an inch long. Add to the fact that I was being swept away by the current and the critters were very camera shy often hiding on the other side of the fauna. If I had a camera with Lytro technology, this wouldn’t have been a problem: it allows you to post-process the focal point of your photo!
You know what? If you still don’t know what I’m talking about visit this page and see for yourself. Click on areas of the photo so you can adjust the focal point. I hope that this technology gets adopted into all digital cameras in the near future. It changes the paradigm of photography.
Check them out on Facebook: https://www.facebook.com/Lytro. Click on the photo to see the effect.
Note: The Lytro experience is only Mac compatible as of the moment. Windows version in the works.