Recent advances in computation, simulation, and real-time rendering have become so advanced that some visual effects artists are opting for rendering everything with CGI instead of filming it outright. In making-off featurettes, we have seen the VFX teams scrap explosions, fluids, car crashes and actor stunts with CGI inserts that offer precise control over lighting, debris, motion, and quality which are all a crap shoot when filming with a real camera.
NVIDIA just released some demos of real-time ray tracing that surpass the best quality renderers of the 1990s with playable frame rates and ambient occlusion that in the right hands could be indistinguishable from many special effects in a film. The new RTX technology in their Volta architecture GPUs can do area shadows, true multi-level depth reflections, refraction and global illumination in real time 30+fps on a personal computer. → Continue Reading Full Post ←
Lytro started in the consumer space a few year’s back by enabling light field camera sensor technology in a portable package. Back then it allowed the user to select the focus point in the image to control depth of filed after the shot had been taken. This is emulated by Panasonic on the GX8 and GH4 with Post Focus but that is a feature that does some tricks with multiple images and lens focus points to select final depth of field.
Lytro does this by capturing all the rays of light entering the sensor at different angles and times to create a light field or three dimensional map of a real subject or scene. The consumer cameras sold in less than stellar numbers due in part to low resolution and while they tried with the Lytro Ilum to bring a more SLR like camera with 40 mega-rays or down-converted to 4 traditional megapixels. It also bombed as the post focus feature was not enough pull to get consumers to adopt the platform; along with claims of low dynamic range and artifacts in bright spots. The Ilum camera is still available for purchase at under $370 USD from the 1299 introductory price; quite a drop! → Continue Reading Full Post ←
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