Frage von actaion:
Hello,
HD usually do not have as much zoom.
But is it so that when a high-definition because of the higher reserves Resolutiondigitalzoom has?
Take for instance an HD-camcorder with 10x zoom on SD Resolutioneinstellt, and then takes 2xdigital-zoom to 20x-speed pan-zoom to come is the result of the resolution as well then as when I take an SD, The 20x optical zoom features?
Theoretically, this should indeed go to an HD device so more than twice as many pixels in each direction has a DS, so that when 2x digital zoom, the resolution is still slightly better than SD digital zoom should be without ...
Antwort von deti:
Why do HD-less "zoom" than SD? Still, your theory is true and that often made synonymous.
Deti
Antwort von domain:
Consumer camcorders are usually small and inexpensive. This leads to such ussynonymous "zoom".
As the PS in a car is a great zoom range sometimes synonymous as Prästigemerkmal, assuming that a large zoom auto synonymous to wide area would include. But this is often not the case, but from above, the area begins s.Normalbrennweite often without wide effect, which is obviously very regrettable.
The digital zoom in HD recordings can mE only be seen as a stopgap, too fast and too strong, the resolution loss compared to the other recordings.
Antwort von Crookie:
Digital zoom takes but eh ... no man why should you have in the quality of the recording ruin. Can you fine but afterwards s.Calculator make.
Antwort von Rolf Hankel:
Hello,
HD usually do not have as much zoom.
But is it so that when a high-definition because of the higher reserves Resolutiondigitalzoom has?
Take for instance an HD-camcorder with 10x zoom on SD Resolutioneinstellt, and then takes 2xdigital-zoom to 20x-speed pan-zoom to come is the result of the resolution as well then as when I take an SD, The 20x optical zoom features?
Theoretically, this should indeed go to an HD device so more than twice as many pixels in each direction has a DS, so that when 2x digital zoom, the resolution is still slightly better than SD digital zoom should be without ... Hello
Coincidentally, I tried yesterday's, the outcome is modest, brings nothing.
Gruss Rolf ...
Antwort von WoWu:
@ Actaion
Rolf has since completely right ... it does not lead to good results and, unfortunately, your theory is wrong.
You have to distinguish details in the picture, so subtleties that of an enlarged Objekjtiv pixels and can be available to you in the PostPro or with a digital zoom simply multiply bezw. interoplierst.
Through this interpolation does not win you an additional single image detail! The Resolutionbleibt than, as in the original recording, they will only be bigger ... and thus blurred.
A Optics against then enlarged details in the picture and solves them with the capabilities of the camera on. The picture remains sharp.
Nor should one of the zooms in PostPro foresee, because they all image artifacts (noise, block formation, edge sharpness, moiré, etc.) with enlarged. A digital zoom in the camera makes this at least before encoding, so you are artifacts in the image (edge sharpening), nor with vergrösserst, but not least the artifacts of image coding, because the dig. Zoom is situated in front of the coding.
But the sharpness of an optical zoom can reach you under no circumstances!
Antwort von Debonnaire:
If you've recorded HD (And that in a good quality!), In an SD project and use up to a maximum of 720 * 576 pixels large cutout reinzoomst, then does it wonderfully!
But the reason why most of these digital zoom somehow "fake" looks are not yet artifacts or pixels Interpolationsprobleme, but simply because the visual perspective in the picture is not (more) - as with the optical zoom - changed! If you are in a video optical zoom, then changing the size ratio between foreground and background (For more telephoto, the depth of the image "compressed" in more Wide Angle Will they "pulled apart".). Although many viewers do not necessarily consciously see / know, but they recognize subliminally in a purely digital zoom, "that because something is not right", then perhaps look closer and then go off ...
However, do I (moderate) digital zoom, and they often told me several times already saved the ass, if perhaps a setting out of nothing was exhilarating!
Just try, instead of constantly rumfragen and rumtheoretisieren, folks!
Antwort von WoWu:
It always comes to the claim, because the procedures (interpolation) do you try not synonymous with the round and you've already made up of 4 Farbsamples in Hd Recording only one made with each of the 4 samples (depending on the type) only still (more or less limited) similarity has. At the next interpolation, no preference whether up or down ... are you doing these, just like other pixel values, still less with the original pixels to do. Combining Du interpolations, eg 3x (+) and 2x (-), you have values of 16, only one non-interpolated value. And so see the pictures from synonymous.
Try it out with Photoshop a picture only to a degree right turn and then (without UNDO) in a count back. Then you get a good impression, what with the interpolation Picture makes.
But, as I said, it always comes to the rights.
