Maybe it is. Sorry. But I was employed at commodore responsible for amiga sales when Germany did 47% of it. US did 3% . but they forgot to make a new product interesting for the world market. It did only support NTSC Video (+ additional 2 % for japan. The rest of the world was pal). They saved 2$ each system but forgot or better where not interested that pal was world standard. :-)
While a good low pass filter can be done in software, sampling theory mandates an anti-aliasing filter to absolutely prevent aliasing. Once the signal is digitized, it is impossible to be sure if the signal recorded is real signal or aliased signal. Sure, you can play some guessing games, or even make reasonably educated guesses and choose to selectively filter the 'aliased' signals, but you will run the risk of the 'aliased' signal being an actual signal. That risk might be acceptably low for you to not use a filter, but it does not mean you can replicate the filter in software. The filter *must* be before the digitization stage.
One could argue that if the resolution of the sensor gets high enough, the lens can't resolve enough for the sensor, obviating the need for an anti-aliasing filter. This is true, but then you just have the lens acting as your filter...
One can sample without an anti-aliasing filter if you choose to. However, you always run the risk of recording aliased signals.
Ralph Conway wrote: We are the market. US does not really count. >> Ralph Is this Germany Sarcasm?
He is from Germany, the country of Leica, Francke und Heidecke /Rollei and Zeiss / Contax. The management of those companies repeated that mantra all day "we are the market, US does not really count, we are the market US does not really count, ...". We all know what happened then. Probably it's in the German DNA. But, we don't care, since the roots of EOSfun are in the Arroganz of the German camera industry that failed and lost the world market to the Japanese top brands!
Deezie wrote:
He had me until he wrapped up his statement with even more speculation. Goodness gracious.
The 5D had the best high ISO going for about three years, so that statement is less speculation and more an observation. The 50D is supposed to be "as good" as the 5D in terms of ISO. Yes, it is canon's claim but if they did truly improve by 1.5 stops in an APS-C sensor, then it is EXTREMELY likely that they will do the same thing in fullframe.
Let me put it another way that sounds less like a prediction: It is obvious that the midrange bodies (10d/20d/30d/40d/50d/5d) have been intended to have high image quality for their class and adequate everything else. Expect this trend to continue.
Yep. Image quality or features! That's the question. Those who choose image quality choose EOSfun. The features is for the gearheads who think they need to have them for the real Coolpix.
eosfun wrote:
He is from Germany, the country of Leica, Francke und Heidecke /Rollei and Zeiss / Contax. The management of those companies repeated that mantra all day "we are the market, US does not really count, we are the market US does not really count, ...". We all know what happened then. Probably it's in the German DNA. But, we don't care, since the roots of EOSfun are in the Arroganz of the German camera industry that failed and lost the world market to the Japanese top brands!
If by "failed" you mean "have produced and still produce remarkable and fantastic lenses that people pay thousands of dollars for, used as new", you are quite correct
For an example of how this might be accomplished see US2007/0097220 A1, US 2007/0097232, and JA 2007124665 A / Int. Cl. H04N 5/232 G03B 7/00
JimR
kidtexas wrote:
While a good low pass filter can be done in software, sampling theory mandates an anti-aliasing filter to absolutely prevent aliasing. Once the signal is digitized, it is impossible to be sure if the signal recorded is real signal or aliased signal. Sure, you can play some guessing games, or even make reasonably educated guesses and choose to selectively filter the 'aliased' signals, but you will run the risk of the 'aliased' signal being an actual signal. That risk might be acceptably low for you to not use a filter, but it does not mean you can replicate the filter in software. The filter *must* be before the digitization stage.
One could argue that if the resolution of the sensor gets high enough, the lens can't resolve enough for the sensor, obviating the need for an anti-aliasing filter. This is true, but then you just have the lens acting as your filter...
One can sample without an anti-aliasing filter if you choose to. However, you always run the risk of recording aliased signals. ...Show more →
Well, from reading the last patent (I searched Google for the first two and found nothing), it sounds like they are implementing a controllable anti-aliasing filter by using an optical element, before capture. From my skimming of the patent, it sounds like they defocus the lens or the chip (or other optical element) by a small amount to introduce the desired amount of blur (low pass, or anti aliasing).
"[0021] If a determination is made to implement anti-aliasing for the image being photographed, anti-aliasing logic 170 may issue a signal to an optical controller 175. The signal "programs" the optical controller 175 such that the desired amount of blur is introduced during the image capture operations to achieve the desired anti-aliasing. In response, optical controller 175 may cause one or more optical element to move or shift during the image capture operation, thereby blurring the image."
My point is that while one can certainly fly without a seat belt or in this case, without any concern of aliasing, proper sampling theory requires anti-aliasing filtering. There are different ways to implement it, but it has to happen before sampling. Of course, in many situations you can get by without any anti-aliasing if the circumstances are right. Apparently Leica and others felt that moire is a rare enough occurrence that they wanted to squeeze some extra resolution out of their system by leaving off the filter.
Ralph Conway wrote: I am sorry. Looked in the dictionary and did not find "vetinary". So what does "vetinary permit" mean?
Ralph
Hah
"Let him who is without sin cast the first stone"
It is proof that even the British are capable of mistype their own language
I meant veterinary (animal doctor) - just a light hearted OT comment on the typo of pub (presumably you were photographing inside a hostelry dispensing guiness rather than the gastroentinal tract of a juvenile Irish Wolf Hound ) Please don't take offence. Working in Chinese a lot I find myself making a fair number of amusing 'linguistic creations' and I found that the idea of some sort of colonoscopy lens from Canon made me chuckle. I couldn't even begin to say much in German
If ever we are in teh same location perhaps we can get together for a guiness or ale of your choice and some 'craic' about Canon and second languages
eosfun wrote:
Yep. Image quality or features! That's the question. Those who choose image quality choose EOSfun. The features is for the gearheads who think they need to have them for the real Coolpix.
Drop the 'EOSfun' in every single post please - it's annoying.
It is proof that even the British are capable of mistype their own language
I meant veterinary (animal doctor) - just a light hearted OT comment on the typo of pub (presumably you were photographing inside a hostelry dispensing guiness rather than the gastroentinal tract of a juvenile Irish Wolf Hound ) Please don't take offence. Working in Chinese a lot I find myself making a fair number of amusing 'linguistic creations' and I found that the idea of some sort of colonoscopy lens from Canon made me chuckle. I couldn't even begin to say much in German
If ever we are in teh same location perhaps we can get together for a guiness or ale of your choice and some 'craic' about Canon and second languages ...Show more →
Good morning :-)
Yes, I wanted to say "pub", not that inside doggy thing.
Drop the 'EOSfun' in every single post please - it's annoying.
So are rumors. I am not saying my posts are not annoying. You can ignore them. Just as I should ignore the comments like yours. But hey, I am polite. And I am in a good mood. because I have the EOSfun
Gute Morgen Ralph, good morning all! And to the others: good mourning
Any new rumors today?
eosfun wrote:
So are rumors. I am not saying my posts are not annoying. You can ignore them. Just as I should ignore the comments like yours. But hey, I am polite. And I am in a good mood. because I have the EOSfun
Gute Morgen Ralph, good morning all! And to the others: good mourning
Any new rumors today?
THX The latest rumor today is the 35/1.4mkII. It's not the kit lens for a 5D successor though Did already order one? Not that it's really rumor anymore since whole Europe already knew for a long time and one can order in the Netherlands at 'geengeld.nl' . For the non Dutch this website domainname is synonym for "nomoney.com" so it must be free I guess The company 'Rabbithill' is offering lots of EOSfun! (no plugging for this company meant though, they are just the first to advertise this new glass).
I am sorry. Looked in the dictionary and did not find "vetinary". So what does "vetinary permit" mean?
The latest rumor today is the 35/1.4mkII. It's not the kit lens for a 5D successor though