@dag - ok - taj Sony je TV iz 2004 i to je HDTV. Verujem da kad su pravili Amigu 1200 nisu racunali da ce docekati 1280 HDTV pa da se tako nesto i stvarno iskoristi.
Izgleda da je skoro nemoguće naći na internetu podatke o horizontalnoj rezoluciji o crt tv-ima iz pred-digitalnog (tv) doba. Onda se rezolucija izražavala u linijama. Ali da su vrhunski tv mogli da prikažu taj amigin SuperHires mod i da se vide svi pikseli - mogli su. Dobro se sećam tog wow efekta pre 15-ak godina kad sam video kako izgleda baš taj mod na nekom nabudženom sony trinitron tv na koji je bila spojena a1200 preko scart rgb.
A evo i još jedan citat sa nekog crt faq da se uveri "neverni kovacm"™ :d
What many people fail to realize is that the phosphor triads of the screen *do not* correspond to pixels in the image; they are not kept in alignment with the image pixels/lines/whatever, nor is there are reason for them to be. The phosphor dot pitch IS a limiting factor in resolution, but we need to look a little further to determine whether or not a given tube will be usable for a given format (what most people mistakenly call a "resolution".)
The true resolution capabilities of a CRT are limited primarily by the dot pitch AND the spot size. For practically all CRTs and monitors in the PC market, the spot size is considerably larger than the dot pitch - up to 2X or so at the corners, if the tube is at or near its specification limits. This doesn't necessarily cause a problem with the image quality, however, since you aren't really resolving individual "pixels" in any case - what you need to resolve are the *differences* between adjacent pixels, or pixel/line pairs. And, oddly enough, it doesn't take a dot pitch of equal or greater size than a logical pixel to do this to most people's satisfaction. In fact, display types sometimes talk about a 'Resolution/Addressibility Ratio', or RAR, which is in effect the ratio of the actual size of a spot on the display to the size of a "logical" pixel in the image. And for best perceived appearance, this is generally going to be GREATER than 1:1 - say, 1.5:1 or even 2:1. (Too high, and the image is blurred; but too low, and the image takes on a grainy appearance that most people find objectionable.)
Bob is absolutely correct in stating that most displays, when run at the highest support addressibility or format (or, if you insist, "resolution") wind up with the "pixel size" being smaller than the dot pitch. But what is also correct, if somewhat counterintuitive, is that this is OK, and can still result in an image that will be acceptable (and even perceived as 'sharp') to the user.
You can certainly exceed the resolution capabilities of a tube and/or monitor (monitors differ from simple tubes by also having a video amp to worry about!). For instance, you probably won't be really happy with 1600 x 1200 on a 17" 0.28 mm CRT. But 1280 x 1024 on an 0.31 mm 20-21" tube can look very good, even though the numbers don't appear to work out.
(From: Bob Niland (
[email protected]).)
While not stated above, I would speculate that this is due to various human visual system factors, particularly that humans have more visual acuity in luminance (B&W) than in chrominance (color). If a CRT can actually illuminate less than a full phosphor triad, its luminance resolution can exceed the dot pitch. There will be some color fringing, but the eye may not notice.
(From: Bob Myers (
[email protected]).)
That's a good bit of it. Whether or not you're going to be satisfied with a given dot pitch versus addressibility ("resolution") basically has to do with what you think "resolve" means.
The fact that we don't generally have the same spatial acuity for color - in other words, you won't really see small details based on differences in color alone, there has to be a difference in brightness - is a big part of this. And you will be able to see such variations acceptably even when the size of the logical pixel is somewhat under the dot pitch size. When this occurs, you don't get constant color pixels - you don't even get constant *luminance* pixels - but you do perceive acceptable levels of detail to call the image 'sharp'.