Re: HVX200a vs. Sony EX1

Hi,

The camera does not upsample anything. The part that is pretty frustrating for me is that people say stuff like this and they sound as if they know what they are talking about and then say they are not in favor of it.

Spatial Offset has been a technology that has been used by Panasonic and others for years, although I think the HVX is the first to use it in the horizontal and vertical domains. The technology has allowed chip cameras to exceed any sort of resolution you could get off of a tube camera because it is able to make resolution in the areas of the CCD where there is no photosensitivity, the registers. By offsetting the red and the blue sensors in both the horizontal and vertical domain you can capture resolution that otherwise would not be captured.

After this is added to the signal you are looking at an effective 1.1 million pixel imager. At this point it is captured in the 1080P domain where all of the camera processing is made and then when it is time for the recoding from it changes to that.

Keep that idea and then address the recording algorithm which is intra-frame, each frame stands on its own. Long GOP is not frame independent resolution and when you have a lot of motion and a lot of detail the long GOPs will throw the res away until the camera comes to a rest, where then everything will snap back.

1080 X 1920 is only good if you have an algorithm that can really handle it and so far the only one I have seen is the AVC-Intra or some uncompressed domain recordings. Keep in mind that AVC-Intra is 10 bit and the load on HD is 1.2Gbs in the uncompressed domain so with the compression that brings it to 100Mbs. Quite the feat and it still looks gorgeous, regardless of motion or details.

Lastly the HVX200A and the HPX170 share the same imager.

Best,

Jan



Jan Crittenden Livingston
Product Manager, HPX500, HVX200, DVX100
Panasonic Broadcast & TV Systems