Please Help, Brand New HM700 unusable Noise at DVinfo.net

Todd Russell · June 13th, 2010, 02:28 AM

Hey Guys, need some urgent help...
I just got a new HM700, I have had had fabulous results with the HM100 but this camera is unusable do to noise.. At first I thought it was just the VF limitation as I could see this minute snowing in all the dark areas but once I have looked at vision it looks terrible..
This noise is in soft lit interview situations, any shadows etc..
I had looked through old threads and found a thread suggesting the following advice.

Detail NORMAL
Master black -1
Black Toe STRETCH, Lev 3
Knee MANUAL 80%
DNR OFF

This has had no effect at all, I am currently in the middle of a docco and want to use this for interviews but the picture is no way near the little HM100...

Is there something I can do correct this or have I purchased a dud...

PS>> just checked JVC website and I have the latest firmware version already installed...
cheers

thanks heaps for any suggestions...
Todd.
.

Ryan Mast · June 13th, 2010, 08:21 AM

Turn DNR on.

Turn gain off (if you haven't already).

Set Detail to somewhere between -3 and -7.

The black toe does not save you any usable picture information -- it's only useful if you like that look.

Don't trust the brightness on your viewfinder, and open the iris til your 100% zebra stripes start dancing. This camera records luminance from 0%-108%, so even once 100% zebras show up, you're not clipping yet.

Can you post a few seconds of HD video of your noisy footage?

Ben Lynn · June 14th, 2010, 08:36 PM

Todd,

Any luck with the camera so far? To me it sounds like it may just be bad. The camera should work out of the box and shouldn't have that kind noise like you describe. I've been shooting some with a hm100 mixed with an hm700 and the footage from the two cameras looks the same after some cursory editing. I certainly haven't seen any of the noise that you talk about from any of the 700's I've used.

I know you're probably swamped with trying to figure it out, but if you could get a frame grab and post it that would help people assess the problem.

Also, what thread suggested a knee of 80%? Just wondering about that. Some people use a low knee level, but that's really low. It also shouldn't have anything to do with the blacks.

June 13th, 2010, 02:28 AM	#1
Todd Russell New Boot Join Date: Apr 2009 Location: Perth, Western Australia Posts: 5	Please Help, Brand New HM700 unusable Noise Hey Guys, need some urgent help... I just got a new HM700, I have had had fabulous results with the HM100 but this camera is unusable do to noise.. At first I thought it was just the VF limitation as I could see this minute snowing in all the dark areas but once I have looked at vision it looks terrible.. This noise is in soft lit interview situations, any shadows etc.. I had looked through old threads and found a thread suggesting the following advice. Detail NORMAL Master black -1 Black Toe STRETCH, Lev 3 Knee MANUAL 80% DNR OFF This has had no effect at all, I am currently in the middle of a docco and want to use this for interviews but the picture is no way near the little HM100... Is there something I can do correct this or have I purchased a dud... PS>> just checked JVC website and I have the latest firmware version already installed... cheers thanks heaps for any suggestions... Todd. . Last edited by Todd Russell; June 13th, 2010 at 03:11 AM. Reason: additional info

June 13th, 2010, 08:21 AM	#2
Ryan Mast Regular Crew Join Date: Apr 2010 Location: Philadelphia, PA Posts: 28	Turn DNR on. Turn gain off (if you haven't already). Set Detail to somewhere between -3 and -7. The black toe does not save you any usable picture information -- it's only useful if you like that look. Don't trust the brightness on your viewfinder, and open the iris til your 100% zebra stripes start dancing. This camera records luminance from 0%-108%, so even once 100% zebras show up, you're not clipping yet. Can you post a few seconds of HD video of your noisy footage? __________________ Meteor Tower Films We make music videos, design video for live theater, and build interesting contraptions.

June 14th, 2010, 08:36 PM	#3
Ben Lynn Major Player Join Date: Mar 2003 Location: Bloomington, IL Posts: 636	Todd, Any luck with the camera so far? To me it sounds like it may just be bad. The camera should work out of the box and shouldn't have that kind noise like you describe. I've been shooting some with a hm100 mixed with an hm700 and the footage from the two cameras looks the same after some cursory editing. I certainly haven't seen any of the noise that you talk about from any of the 700's I've used. I know you're probably swamped with trying to figure it out, but if you could get a frame grab and post it that would help people assess the problem. Also, what thread suggested a knee of 80%? Just wondering about that. Some people use a low knee level, but that's really low. It also shouldn't have anything to do with the blacks.