Showing posts with label Diorama Effect. Show all posts
Showing posts with label Diorama Effect. Show all posts

Tuesday, July 31, 2012

The London 2012 Olympics: First 3-D Olympics?


Though high-definition 3-D TV sporting events broadcasts is already a technical – and commercial – reality as far back as 2009, will the London 2012 Olympics be the first summer Olympiad to be broadcasted in high-definition 3-D?

By: Ringo Bones

3-D enthusiasts – especially high-definition or HD 3-D enthusiasts – seem barely able to contain their excitement when NBC and Panasonic announced back in July 20, 2012 that they’ll be offering the “infrastructure” to broadcast the London 2012 Olympics in high-definition 3-D. Though HD 3-D broadcasts of top billed sporting events are already a technical – and commercial – reality as far back as 2009, if you can afford to buy one of those top-dollar HD 3-D ready large flat-screen TVs that are more at home in a dedicated home theater set-up than in your typically modest living room, the popularity of broadcasting live events – like top billed sporting events – seems to coincide with the visually stunning success of James Cameron’s 3-D sci-fi epic called Avatar back in 2009. Big league sporting events broadcasters - like ESPN – have billed their HD 3-D broadcasts as “just like being there in the middle of the action” in terms of video quality. But does the reality live up to the hype?

Well, the BBC has a dedicated HD 3-D Olympic channel given that the 2012 summer Olympiad is taking place on their home turf. And so does NBC and ESPN and 22 other that I currently seen so far. On what I’ve seen so far – thanks to our local electronics goods store who used the BBC’s HD 3-D Olympic broadcasts to test out their new batch of large-format HD 3-D ready flat screen TVs. The BBC 3-D broadcasts of the London 2012 opening ceremonies had a nice depth portrayal in them and really make you feel as if you are in the middle of the ceremony – even for a somewhat jaded 3-D movie enthusiast like me. Though, the level of “you-are-there” is only up to a point, given that it is still the main HD 3-D camera’s perspective. Another caveat worth mentioning is the continual swapping to 2-D cameras and the 2-D footage which spoils it a bit.

Given what I’ve seen so far, it seems there is a visually discernable – albeit incrementally - progress in HD 3-D image quality. The HD 3-D London 2012 Olympic broadcasts could be a benchmark of the technical progress made of HD 3-D broadcasts since they became a regular part of atypical up-market satellite dish package back in 2009. The so-called “diorama effect” is now minimal – like swapping from 150 US dollar Mainland Chinese made binoculars to 6,000 US dollar binoculars with Carl Zeiss equipped optics.


Thursday, February 11, 2010

Can Optical Refinements Be Used To Improve 3-D Movie Cinematography?

First used by the ancient Greeks to make the architectural layout of the Parthenon appear “visually perfect”, can optical refinements be used to minimize the exaggerated depth disparity in 3-D movies?


By: Ringo Bones


Ever since the first school-kid began to obsess about the correctness of the aspect ratio of their first perfectly crafted school project diorama, cinematographers also noticed that they too need an artistically refined way to present their newly discovered craft in order to achieve some form of legitimacy. Thus the filmmakers’ attempt at presenting the world as a stage as if they are shooting an actual stage play – which believe it or not – is still a proven formula of cinematography till this day. But with the advent of supposedly pixel perfect 3-D movie cameras, will cinematographers need to upgrade their art in order to make 3-D movies that look “natural” to our eyes?

Since their invention, 3-D movie cameras are based on the way our two eyes look in the same direction at once. And also the way they are laid out at roughly two and a half inches apart from center to center and therefore are not aimed in exactly the same line. While different technologies are used throughout the years to coordinate and harmonize those two distinct left and right field pictures – and we are getting better at it. A problem still exists – often referred to as the diorama effect – where an exaggerated depth disparity in the 3-D camera’s visual field plagues 3-D movie cinematographers for some time now in their quest for a natural looking 3-D movie. But can optical refinements be used to solve this somewhat intransigent cinematographical dilemma?

When referring to reliable historical documentation, optical refinements were first introduced by the ancient Greek architects of the Parthenon supposedly to “loosen up the mathematical strictness” of the “shapely thinking” of the ancient Greeks. Though it was probably done more to counteract our eyes’ inherent propensity for optical illusions. For without the introduction of optical refinements in the form of slight curves to the whole structure that is hardly visible to the unaided eye. The architects of the Parthenon could have created a building that looks “crooked” – i.e. a visual impression of the building’s visual field sagging towards the center - even though the long horizontal lines and perfectly perpendicular vertical intersections are plumb-bob perfect straight.

Optical illusions are commonly defined as physiologically perceived visual images that don’t correspond to objective reality. Does the diorama-effect or exaggerated depth disparity between objects or subjects in a 3-D movie’s visual field nothing more than an optical illusion? Toeing-in the two lenses would probably rectify this problem. Or digital video software that automatically compensates for the aspect ratio of the scene being shot could be a solution.