Em 13/7/2011 12:38, Isaac Marino Bavaresco escreveu:
> Em 13/7/2011 12:27, Herbert Graf escreveu:
>> It's very cool tech. You basically give up resolution for post focusing.
>>
>> It also allows one to build fixed focus cameras (much less complicated
>> lenses) that deal with focus afterwards (i.e. cell phone cameras).
>>
>> At the moment the tech is very limiting, I think with a modern ~15MP
>> sensor you end up with pictures of VGA resolution. So we've a ways to
>> go.
> When I saw it I thought that he used a camera on a tripod and took
> several pictures with different focus settings (or perhaps a camera that
> does it automatically).


I just accessed their website again and I'm not convinced about their
explanation:

"The light field sensor captures the color, intensity and vector
direction of the rays of light"

Vector direction? How can a sensor capture a light ray that is going to
a different direction than its own?

I think a much simpler approach would be a camera with a multi-focal
lens that exposes the same image over different areas of the sensor
(like a bee-vision), each with a different focus setting.

There would not be necessary too many different focus regions, because
after some distance one focus fits all.


Isaac

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