Lytro may be the first company to release lightfield cameras for the consumer, but other companies have also been working on this technology, some for years.
One prominent example is Adobe, who developed the PDF-format and – more importantly – Photoshop.
As far back as 2007, Adobe successfully demonstrated a plenoptic camera prototype with continuous refocusing, and also showed what an integration of Lightfield in Photoshop could look like: Continue reading →
What is the minimum distance that the infamous Lytro LightField camera can still focus on? I’ve been looking out for this bit of information, which is an important feat to anyone who’s keen on taking macro photos.
In an extensive Interview on Youtube, Director of Photography Eric Cheng noted that there was a “sweet spot” to create maximally refocusable lytro images: Pictures taken at about 6 inches (15 cm) away from the subject (when zoomed out completely) are most interactive, according to him.
Other than that, it seems like Lytro staff was avoiding the question of minimum focus distance. Continue reading →
How big are Lytro’s Lightfield images actually? This question allows for several interpretations, which we will try to answer in the following article:
Sensor- and image resolution
The image sensor in a Lytro camera can register 11 million light rays (11 “megarays”) – i.e. a color and luminosity value as well as the direction of the lightray.
A computed lytro picture, at this time, contains 1080 x 1080 pixels (=1.17 megapixels). Depending on software, however, the picture size can theoretically be increased without loss of much quality. Living Pictures that are uploaded to the web are resized and compressed to 540 x 540 pixels, but they can also be viewed in fullscreen mode. Continue reading →