DV-List: DSR-PD150P test,Replease measure the vertical,Replease measure the vertical

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DSR-PD150P test
Replease measure the vertical - (2)

DSR-PD150P test - "Adam J. Wilt"

> I'm not quite sure I understand, above 475 lines you only get gray
> with the VX1000, and the VX2000 looks good up to 520?
Not, the VX2000 aliases so much above 520 lines that it never settles down
into a smooth gray. This is NOT good; ideally you don't want to see any
detail above the Nyqist limit of your chips, even if practically you'll
usually see some.
> I must say I miss Ren & Stimpy from my days in the US, is the show
> still alive and running?
I have no idea, not being cable-enabled, but "Treasure of the Sierra Madre"
is shown every so often.
Cheers,
AJW

Replease measure the vertical - "Adam J. Wilt"

> Could you please measure the vertical resolution of the VX1000 and
> VX2000 at 1/30th second shutter-speed in 4:3 (and 16:9). Supposedly, the
> VX2000 operates differently at 1/30th second that does the VX1000.
The VX1000 has full resolution vertically (340 TVL) in the raw DV data but
sets the field-doubling bit so that analog output is single-field, doubled.
Rendering the pix to lose the bit is NG because at 1/30 on the VX1000 the
fields still show interlacing.
The VX2000, alas, appears to interpolate one field from the other prior to
recording; its vertical resolution at 1/30 is half of that at 1/60. It's much
worse than Frame Movie Mode on the GL1 (tested at the same time).
> Also, it would be nice to know the VX2000's vertical resolution at
> 1/60th second shutter-speed in both 4:3 and 16:9.
4:3: about 340 TVL. 16:9: not tested.
Cheers,
Adam Wilt

Replease measure the vertical - "Perry"

Further to Adam's reply, I did look at the vertical resolution of the PD150
when it was in the 16:9 mode. The result wasn't very pretty due to the
hardware interpolation mangling the lines. I tried interpolating a 4:3 shot
of the same view using Photoshop, and the result was of course nice and
clean.
To me it confirms the view that it is much better from an image point of
view to shoot in 4:3 and then create the Anamorphic wide screen image in
post (After Effects would produce a similar result to Photoshop). This does
of course invoke a lot of rendering time but it does also give a good
quality 4:3 for the same money!
This is of course only relevant to consumer type cameras that don't have a
proper 16:9 CCD.
Perry Mitchell
Video Facilities
http://www.perrybits.co.uk/

(diese posts stammen von der DV-L Mailingliste - THX to Adam Wilt and Perry Mitchell :-)

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