Re: SD output darker than HD output

Date : Wed, 28 Sep 2005 13:53:39 -0300
To : <DS(at)Softimage.COM>
From : "Espiritu VFX" <vfx_list(at)fibertel.com.ar>
Subject : Re: SD output darker than HD output
Pat,

MY WFM is a SD one, so I can't check both values.

But I found a big difference in the WFM comparing
Nitris-----> Digi vs Nitris----->HDVTR--Donconvert--->Digi

But I must go today for 8 days, and I can't test anymore until I come back,
but all of you see the HD an SD outputs in the same level of luma? I'll try
to check in another Nitris when I come back!

Regards,
Nacho


----- Original Message -----
From: <pat-list(at)horridge.demon.co.uk>
To: "DS Mailing List" <DS(at)Softimage.COM>
Sent: Tuesday, September 27, 2005 12:10 PM
Subject: RE: SD output darker than HD output


> Surely you have a waveform monitor and check the levels at each stage to
> find out where the error is?
> The route you describe below has a number of steps that may be interfering
> with the level (like the down-convert)
>
>
> > -----Original Message-----
> > From: Espiritu VFX [mailto:vfx_list(at)fibertel.com.ar]
> > Sent: Tuesday, September 27, 2005 12:39 AM
> > Subject: SD output darker than HD output
> >
> > This is a multi-part message in MIME format.
> >
> > - ------=_NextPart_000_01CE_01C5C2DA.577D0F80
> > Content-Type: text/plain;
> > charset="iso-8859-1"
> > Content-Transfer-Encoding: quoted-printable
> >
> > Guys,
> >
> > I can see that the SD output from Nitris is darker than the HD output.
> >
> > To test it I outputted from Nitris to Digibeta and then to HD
> > VTR and = downconverted from there to Digibeta and the first
> > one is darker than = the second one.  Anyone knows why?
> >
> > I'm worried about this because we did a whole series of 9
> > short films in = HD and we have to deliver HD and SD copies
> > and both should look the = same.
> >
> > Thanks for any help,
> > Nacho
> >
> > PS: If the question is why didn't I output to HD and then
> > downconvert = from there, the answer is that the DC from the
> > HDW2000 looks worse than = Nitris one. If anyone knows of any
> > setting I should change in the = HDW2000 pls advise me!!!!
> >
> >
> > - ------=_NextPart_000_01CE_01C5C2DA.577D0F80
> > Content-Type: text/html;
> > charset="iso-8859-1"
> > Content-Transfer-Encoding: quoted-printable
> >
> > <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0
> > Transitional//EN"> <HTML><HEAD> <META
> > http-equiv=3DContent-Type content=3D"text/html; =
> > charset=3Diso-8859-1"> <META content=3D"MSHTML
> > 6.00.2800.1106" name=3DGENERATOR> <STYLE></STYLE> </HEAD>
> > <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial
> > size=3D2>Guys,</FONT></DIV> <DIV><FONT face=3DArial
> > size=3D2></FONT>&nbsp;</DIV> <DIV><FONT face=3DArial
> > size=3D2>I can see that the SD output from = Nitris is
> > darker=20 than the HD output.</FONT></DIV> <DIV><FONT
> > face=3DArial size=3D2></FONT>&nbsp;</DIV> <DIV><FONT
> > face=3DArial size=3D2>To test it I outputted from Nitris to =
> > Digibeta and=20 then to HD VTR and downconverted from there
> > to Digibeta and the first = one is=20 darker than the second
> > one.&nbsp; Anyone knows why?</FONT></DIV> <DIV><FONT
> > face=3DArial size=3D2></FONT>&nbsp;</DIV> <DIV><FONT
> > face=3DArial size=3D2>I'm worried about this because we did a
> > = whole=20 series of 9 short films in HD and we have to
> > deliver HD and SD copies = and both=20 should look the
> > same.</FONT></DIV> <DIV><FONT face=3DArial
> > size=3D2></FONT>&nbsp;</DIV> <DIV><FONT face=3DArial
> > size=3D2>Thanks for any help,</FONT></DIV> <DIV><FONT
> > face=3DArial size=3D2>Nacho</FONT></DIV> <DIV><FONT
> > face=3DArial size=3D2></FONT>&nbsp;</DIV> <DIV><FONT
> > face=3DArial size=3D2>PS: If the question is why didn't I =
> > output to HD=20 and then downconvert from there, the answer
> > is that the DC from the = HDW2000=20 looks worse than Nitris
> > one. If anyone knows of any setting I should = change in=20
> > the HDW2000 pls advise me!!!!</FONT></DIV> <DIV><FONT
> > face=3DArial size=3D2></FONT>&nbsp;</DIV> <DIV><FONT
> > face=3DArial size=3D2></FONT>&nbsp;</DIV></BODY></HTML>
> >
> > - ------=_NextPart_000_01CE_01C5C2DA.577D0F80--
> >
> > ------------------------------
> >
> >
>
>
> ---
> Subscribe? E-mail Majordomo(at)Softimage.COM with the following text in body:
subscribe ds
> Unsubscribe? E-Mail Majordomo(at)Softimage.COM with the following text in
body: unsubscribe ds

---
Subscribe? E-mail Majordomo(at)Softimage.COM with the following text in body: subscribe ds
Unsubscribe? E-Mail Majordomo(at)Softimage.COM with the following text in body: unsubscribe ds


Search the Digital Studio List archives here or use the advanced search form to search across mailing lists. Searching help is available.
This site supposedly brought to you by Benjamin Grosser and the Imaging Technology Group.