Interesting JVC HD250 experiment. at DVinfo.net

Robert Jackson · December 8th, 2006, 06:13 PM

I just thought I'd give you folks a little heads-up. A couple of weeks ago I posted links to some frame captures from my HD100. I've been using it with a Cinemate-15 to telecine some old 8mm footage for my current project. Someone from JVC contacted me and said they found the frame captures interesting, but wondered if the new MPEG compression engine on the HD250 would do a better job of encoding the grain structure than my HD100. I just got tracking information from JVC. They're shipping me out an HD250 so I can do some tests. It's pretty exciting for me and I think they're looking forward to seeing the results, as well. I was told that they've done video-to-film tests, but never seen film to video tests on this line.

Anyway, I just wanted to drop everyone a line and let you know what's going on. JVC is not only listening to what we're doing with their products, they're very proactive about getting involved.

Steve Benner · December 8th, 2006, 07:18 PM

From what I have seen, the blue alpha channel on the HD-250's super-encoder is much better and does reduce the grain.

The only thing I am waiting for, and it is minor, is a 2.35:1 aspect ratio guide in the viewfinder like the Xl-H1 has.

Brian Duke · December 8th, 2006, 08:44 PM

Quote:

Originally Posted by Robert Jackson

JVC is not only listening to what we're doing with their products, they're very proactive about getting involved.

I love to hear that, since afterall we are the buyers of their products.

Mark Silva · December 11th, 2006, 11:12 AM

Wow thats Great Robert!

I've been using my HD100 to do film transfers as well.

8, Super 8 and 16mm all through a cinemate-20

Have you noticed though that the chromatic abberation shows itself on some shots? (and the blue on one side, gold on the other abberation as well?)
You only see it on certain films and i don't know why.

It happens where dark meets bright. But not all of the time. and its worse near the edges than the middle. The stock lens has a tendency to bring out a "blue glow" as well at certain times.

I find myself having to put the camera in black and white mode when doing black and white transfers otherwise the CA shows up and thats not right having any color on black and white film.

Other than that though the capturing from the cinemate-20 is really great.

Carl Hicks · December 11th, 2006, 12:23 PM

Quote:

Originally Posted by Steve Benner

From what I have seen, the blue alpha channel on the HD-250's super-encoder is much better and does reduce the grain.

The only thing I am waiting for, and it is minor, is a 2.35:1 aspect ratio guide in the viewfinder like the Xl-H1 has.

Hi Steve,

A 2.35:1 safe area viewfinder guide is available in the GY-HD250, as well as the GY-HD200. This is covered on page 89 of the users manual.

Regards,

December 8th, 2006, 06:13 PM	#1
Robert Jackson Inner Circle Join Date: Jun 2003 Location: Santa Rosa, CA Posts: 390	Interesting JVC HD250 experiment. I just thought I'd give you folks a little heads-up. A couple of weeks ago I posted links to some frame captures from my HD100. I've been using it with a Cinemate-15 to telecine some old 8mm footage for my current project. Someone from JVC contacted me and said they found the frame captures interesting, but wondered if the new MPEG compression engine on the HD250 would do a better job of encoding the grain structure than my HD100. I just got tracking information from JVC. They're shipping me out an HD250 so I can do some tests. It's pretty exciting for me and I think they're looking forward to seeing the results, as well. I was told that they've done video-to-film tests, but never seen film to video tests on this line. Anyway, I just wanted to drop everyone a line and let you know what's going on. JVC is not only listening to what we're doing with their products, they're very proactive about getting involved.

December 8th, 2006, 07:18 PM	#2
Steve Benner Major Player Join Date: Apr 2006 Location: United States Posts: 590	From what I have seen, the blue alpha channel on the HD-250's super-encoder is much better and does reduce the grain. The only thing I am waiting for, and it is minor, is a 2.35:1 aspect ratio guide in the viewfinder like the Xl-H1 has.

December 11th, 2006, 11:12 AM	#4
Mark Silva Major Player Join Date: Apr 2006 Location: Pacific NW Posts: 431	Wow thats Great Robert! I've been using my HD100 to do film transfers as well. 8, Super 8 and 16mm all through a cinemate-20 Have you noticed though that the chromatic abberation shows itself on some shots? (and the blue on one side, gold on the other abberation as well?) You only see it on certain films and i don't know why. It happens where dark meets bright. But not all of the time. and its worse near the edges than the middle. The stock lens has a tendency to bring out a "blue glow" as well at certain times. I find myself having to put the camera in black and white mode when doing black and white transfers otherwise the CA shows up and thats not right having any color on black and white film. Other than that though the capturing from the cinemate-20 is really great.