[opendtv] Re: BBC Demonstrates HDTV Broadcasts over SD Channels
- From: Mark Schubin <tvmark@xxxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Thu, 23 Jun 2005 07:33:48 -0400
If possible, try to identify the source.
I would certainly agree that cameras with 1280 x 720 imagers do not look
as sharp as those with 1920 x 1080 imagers. I complained about the
former from when they first came out. At the time, high-end
standard-definition cameras already had over 1350 image-sensors per
line, so it seemed foolish to me for a so-called HD camera to use fewer.
But that's the imager, not the format.
On March 31, I was involved in shooting "Passion" in an HD truck
equipped with Thomson LDK-6000 cameras. Their imagers use 1920 sensors
across regardless of whether they are set for 1080i or 720p. At one
point, during a rehearsal, the truck engineer-in-charge and I were going
through all the cameras on a router to make sure they were okay. When
we hit one camera, the HD monitor flashed that it was showing 720p/60
instead of 1080i. We thought that was odd, so we pressed our eyes to
within a few inches of the glass to see if we could see anything soft.
We couldn't. So we checked the camera. Sure enough, it had been set to
the wrong format. But because it used the same imagers as the other
cameras, its pictures looked just as sharp.
TTFN,
Mark
John Golitsis wrote:
>What I meant was that you always seem to compare 720 with 1080 and never
>1280 with 1920.
>
>When I play back a 1280x720 clip at 100% on my Apple 23" Cinema display, it
>always amazes me how much smaller it is versus a 1920x1080 clip (which takes
>up the full display). Besides that, I do see a difference between the
>football, basketball and hockey I've seen in both formats.
>
>----- Original Message -----
>From: "Craig Birkmaier" <craig@xxxxxxxxx>
>
>
>
>
>>At 10:32 AM -0400 6/22/05, John Golitsis wrote:
>>
>>
>>
>>>The quality of an NTSC signal was also defined by the horizontal
>>>resolution in the signal, but for some reason, that doesn't seem to
>>>carry over to digital for you. Why?
>>>
>>>
>>Huh?
>>
>>
>>
>
>
>
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