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Comment: Definitely need better physics (Score 4, Informative) 289

by delta407 (#33359042) Attached to: Canon Unveils 120-Megapixel Camera Sensor

A more substantial problem is that diffraction limits the effective resolution of an optical system to well above the size of each of these pixels. This is a problem with current sensors at narrow apertures; lenses exhibit a measurable loss of sharpness, typically f/11 and up, because the airy disks expand as the aperture contracts. With hugely dense sensors like this, though... plugging some numbers into a website that explains the whole situation suggests that you'd need to shoot with apertures than f/1.8 to get circles of confusion smaller than the size of a single pixel.

That's right--even "fast" f/2.8 lenses are limited by physics to never being able to project detail onto individual pixels. You could potentially add a deconvolution stage in software to recover additional sharpness, but not in hardware.

Another thing. Do the math: the pixels are 2.1 micrometers square. Compare to trichromatic human vision, which detects red light peaking at 564 nanometers, 0.564 micrometers. The size of a pixel is within a factor of four of the wavelengths they measure. Staggering.

Glass isn't the problem. We need new laws of nature, since we're near the edges of the ones we have now.


+ - How do you talk to your boss about emerging tech?

Submitted by
cbelle13013 writes "I am the IT Manager for a law firm and I recently got into a heated discussion about the use of RSS feeds. We are about to put our new website up and he is adamant about taking down the RSS option. His stance was "If I've never heard of it, none of our clients have ever heard of it". My question is, how do you talk to your boss about technology that will potentially be useful to your organization, especially when they are authoritarian leaders?"

Vista To Be An Indie Games Killer? 113

Posted by Zonk
from the argh-my-toblo dept.
Via GigaGamez (which has a breakdown of the problem), a GameDaily article about the unfriendliness of Vista towards Indie games. The problem is this: Vista has a setting which allows parents to restrict user profiles from accessing ESRB games 'above' a certain rating. IE: Timmy can't play F.E.A.R., or any other 'M' rated game. The problem is that getting ESRB rated is expensive: '$2000-3000 for the privilege', according to GigaGamez. Shoestring budget Indie games just may not have the money for that kind of expenditure. From the GameDaily article: "'It's unfortunately a mercenary way of doing things,' [GFW Group Manager Chris Donahue] explains, 'but, even though we're Microsoft, we do have limited resources. And we do look at the sales charts to determine where our help will have the most impact. Certainly we want Blizzard's 'World Of Warcraft' [currently the most popular massive multiplayer online game] to work flawlessly on day one of Vista because 8 million tech support calls would be a very bad thing. The casual developers don't sell quite as many.'"

+ - Anti Rootkit Author releases Undetectable Rootkit

Submitted by
Anonymous Coward
Anonymous Coward writes "From http://www.antirootkit.com/blog/2007/01/18/rootkit -unhooker-author-to-release-new-undetectable-rootk it/ The anti rootkit software author who goes by the name of EP_X0FF has released information recently about a new rootkit that he has created. EP_X0FF is the author of Rootkit Unhooker one of the best antirootkit scanners at the moment. The rootkit he has created is undetectable by all anti rootkit software. The new rootkit is to be called Unreal Test Rootkit."
Technology (Apple)

+ - Jobs' Keynote at Macworld

Submitted by
ioeth writes "Engadget has a great play-by-play article with pictures covering Steve Jobs' keynote address at Macworld, including a relatively in-depth look at the new Apple iPhone. Check it out here."

+ - Jobs Announces iPhone, AppleTV & Movies

Submitted by Anonymous Coward
An anonymous reader writes "Apple CEO Steve Jobs announced made some much anticipated announcements in his keynote address at Macworld Expo today. Along with the previously previewed AppleTV (formerly known at the iTV), Jobs announced that Apple struck a deal to sell Paramount movies through the iTunes store. He also announced the much-anticipated iPhone, which he boasts will "leap frog" ahead of other mobile phones. Jobs believes that usability will set this phone apart. Instead of a keyboard or stylus, it uses "multitouch" for touch screen navigation. This smart phone runs OS X, so you can access email, the web, and text message through a familiar interface. One of the most interesting features is "visual voicemail" that lets you navigate through your voicemail directly to the message you want. It synchronizes with both Macs and PCs through iTunes."
The Internet

+ - Registrar Cybersquatting on Searched Domains

Submitted by neutronblast
neutronblast (666) writes "I work at web development firm and recently we were searching for new domain names for a client by going to a registrar and seeing if any of them were availible. After finding the name that we wanted, we emailed the client to get approval to purchase the name. The next day when we went to register it we found that it had been registered by an "Internet Domain Holding Company" (a.k.a. cybersquatter) called Maltuzi, LLC.

Coincedence? I'm not sure. I did some research and came up with and article at this Wired Blog and on the forums at webmasterworld.

Has anyone else had this experience? If so, let this be a caution to you and to just pony up the 10 bucks if you think you might want the name."

Nobody's gonna believe that computers are intelligent until they start coming in late and lying about it.