Frage von FrankK:
Hello, I was about to purchase the Canon HV20 last week as the successor to HV30 was presented. The 2-3 months I can wait. However, I have a question about this, I was so far no clear answer can be found:
Plakativ the Canon is advertised as follows:
"The HV30 uses in its Full HD CMOS sensor for 16:9 - HDV recording 1920 x 1080 pixels. The HD-optimized DIGIC DV II processor is characterized in the 1080i HDV format noise - the signal optimization is already in ... "
However, I then found the following info: 1080i (interlaced): 1440 x 1080 pixels
As a newcomer in the field of video for me is a contradiction. Either 1920 x 1080 pixels or 1.440 x 1080p? Or is the subject of media? Or even a spelling mistake of Canon?
Thanks for your help
Frank Kaiser
Antwort von kowi:
Video Resolution:
HDV 1920 x 1080/50i
HDV 1920 x 1080/25p
MiniDV 720 x 576/50i
Image Sensor:
CCD effective pixels 16:9? 2070000 pixels -> 1920x1080 = 2,073,600 pixels
http://www.camcorder-test.com/camcorder.html
http://www.canon.de/About_Us/News/Consumer_Releases/video/hv30.asp
Then go look at the specification.
Antwort von radiohead3:
... the video is in anamorphic hdv2 recorded:
1440x1080 with an AP of 1.333.
gruß cj
Antwort von radiohead3:
... sorry should PAR (pixel aspect ratio) 1.3333 hot.
http://en.wikipedia.org/wiki/Pixel_aspect_ratio
gruß cj
Antwort von Jan:
For HDV 1920x1080 there is no systemic nature is not possible.
The sensor of HV 20 / 30 can be 1920, but it is the system worked with 1440.
Everything just marketing!
You can do well with a car compared to 250 km / h abgeregelt is, he can do more if you wöllte .....
This time the brake is not the sensor or the processor, but the limited bandwidth of the MiniDV cassette.
VG
Jan
Antwort von WoWu:
To what Jan says adds that does not say is that sensors, synonymous if they have a higher resolution skills, be used as synonymous. First, of course you have the 16:9 AR remember that the pixels used in the vertical cut ever, to another course Farbmaske, which is then synonymous nor Resolutionum around. another third and last but not least, reduce the size of the pixels, which then still remain. Light has a wavelength and thus an extension. Exceeding these dimensions, the size of each pixel artifacts to occur. The Nyquist theorem states that the sampling frequency in an optical system at least twice as high as is the spatial frequency, so that no Alaising Effects occur. If the pixel pitch that is too small, the conditions just by a pixel-binning respected. This reflects less usable pixels. Let us mention here synonymous, that the disk radii of light by the diffraction effect of the Aperture grow accordingly. Now Canon has in the DV20 such thing as a variable ND Effect to the contrary effect, although synonymous Canon s.den physical limitations are not really gone. It is not enough, the pixels of the sensor from the catalog and then off to say how the Resolutionaussieht. In the game, also plays the lens resolution aggravated with it yet, at the microscopic lenses a very important role. Therefore, it remains, unless a really good data are available or the manufacturer's tests are clear, much speculation. However, it is based on the tiny chips and the gigantic Resolutionausrechnen how big the pixel pitch, ie the Aussmaße each pixel is .... and the signs in the first approach is not confined to a 1920s Resolutionbei while good pictures out.
So the question is not only whether the resolution of the sensor at all but
how can he can.
It remains only to wait until the HR30 someone was in the hands of something synonymous can check the catalog and not just on unaudited figures.
Antwort von Bernd E.:
... Canon DV20 ... ... ... HR30 This is confusing for the uninitiated in limits: These are HV20 and HV30.
Gruß Bernd E.
Antwort von WoWu:
Oh, yes, sorry ...
thank Bernd ...
