This is common with every digital camera in world, you have to let the camera focus on the scene you want capture and then click the button to actually capture the photo. In short, you can call this process as ‘point-and-shoot’ and so the term widely used with digital cameras. It costs you finite amount of time no matter how good camera is.
A new start up – Lytro.com – is working on a camera which don’t need to focus before you click the button to shoot. It uses a different type of sensor that captures entire light field — basically, all the light that is moving in all directions in the view of the camera.
Lytro is invented by Dr. Ren Ng, a Stanford Ph.D whose dissertation on light-field technology five years ago was showered with awards. Now, with the help of $50 million in funding, most of it from Andreessen Horowitz, Ng has built a company that’s preparing to launch a focus-free digital camera later this year.
Lytro camera makes photography really easy. Rather than manually focusing or waiting for autofocus to work correctly and hopefully center on the right thing, pictures can be taken immediately and in rapid succession. Once you captured the snapshot, simply transfer it to your computer, tablet or phone. There you can adjust the focus and center the required object easily. Quickly notable adjustments can be seen in the pics where focus shifts between a blurry foreground and sharp background and vice versa.
Lytro’s camera works by positioning an array of tiny lenses between the main lens and the image sensor, with the microlenses measuring both the total amount of light coming in as well as its direction.
The technology also allows photos to be taken in very low-light conditions without a flash, as well as for some eye-popping three-dimensional images to be taken with just a single lens. To view photos in full 3-D, users still need some sort of 3-D display, such as a 3-D phone, PC or television. However, even without such a display, a certain amount of 3-D is visible.
Following are the examples which explains how exactly whole thing works. Go ahead and click on the blurry part of the pictures below and see how the focus would be adjusted to sharpen it.