Is anyone else seeing these lines????

G

GRIMWORX

Well-known member
http://www.youtube.com/watch?v=KNOEVG08tes


Vertical lines? Anyone?

Also...in just about everything I shoot on my hmc I seem to get these groupings of 'colour patches' even on Barry Greens LONOIZ settings.... :(

Im STRONGLY considering ditching this cam for a 7d or similar...

However, if anyone can convince me not to, that would be great :D


ps excuse the title video copilot! Just need something quick!
 
I had a similiar problem a while ago. Turned out to be my computer monitor that created "waves" in the in the darker parts of the picture as soon as any any objects moved a bit quicker.

Maybe you have to same issue?
 
Good luck to film a show with a 7D. It has a 12 min limit recording time.

I don't see anything wrong with your video. Maybe you should try a different monitor as stated.
 
I think im a little dissapointed with the quality I PERSONALLY am getting out the hmc.

Im scared of noise. Its difficult to get the balance.
 
Me, I am very satisfied with the quality of this cam. Did you ever used the DVX100? The HMC150 is a step up in this domain.

But for sure it will always be better when you have enough of light.

Maybe you can tell us which settings you use. Cine-D is more noise, but I like it. You don't tell use your settings. And you don't tell use if you tried to see the footage on a different monitor.

You cannot really have a noise free cam. Even broadcasted HD show will have some noise when on air. For sure you will see it when you're a few inch from the monitor, but it's not what you should do.

Yes, I see some noise when I am a looking closely at my HD TV when playing the HMC footage. Especially footage shot in low light. But at a normal viewing distance, it is very clean.
 
SPrimeau said:
Me, I am very satisfied with the quality of this cam. Did you ever used the DVX100? The HMC150 is a step up in this domain.

But for sure it will always be better when you have enough of light.

Maybe you can tell us which settings you use. Cine-D is more noise, but I like it. You don't tell use your settings. And you don't tell use if you tried to see the footage on a different monitor.

You cannot really have a noise free cam. Even broadcasted HD show will have some noise when on air. For sure you will see it when you're a few inch from the monitor, but it's not what you should do.

Yes, I see some noise when I am a looking closely at my HD TV when playing the HMC footage. Especially footage shot in low light. But at a normal viewing distance, it is very clean.
Click to expand...

I shot this particular clip in cine like D with the master ped at +3 as Ive heard this does a lot to reduce noise whilst keeping a great picture. I used to regularly shoot in LONOIZ but I found that to not give me as sharp an image as Id like.

http://vimeo.com/15831855 If I look up close I can see the vertical lines. At first I just thought it was when the video was uploading and sorting itself out and I blamed Youtube, but it turns out that they were there all along, just the uploading process made them more obvious.

On my sony laptop HD screen there is no such issue. The desktop has two samsung T2070 monitors and although they are not the best, I thought they would be good enough. Any thoughts on if I should upgrade my monitors and the vimeo test footage?

Cheers
 
Also... Iris control... is there no way I can permanently lock it off?

Even in manual mode, when I zoom in on a subject the iris changes - I understand WHY the camera is doing this, but can I not have it fixed???


Cheers
 
For the life of me I cannot see the vertical lines on either video...I'm on my laptop now. I sometimes get vertical lines when playing a game, or editing footage on my desktop....it's something that is annoying at times but doesn't impact footage. But then again I have an inexpensive LCD monitor. Possibly it's an issue with my cable or refresh rate.

There's nothing you can do about the iris. If you're on manual that's as locked off as you can get. It only closes by a fraction of a stop and isn't a noticeable difference IMO. In my experience this occurs with every lens. If zooming in severely impacts the brightness of your footage, then you simply have got to put more light in the scene.
 
Every lens will get darker as you zoom in. The best you can do is zoom in the whole way, put it in manual iris, and set it not to "open" but the lowest number you can get. Then it will stay at that aperture and you can use gain or whatever else to compensate for the darkness.

I did this at a low-light conference lately. I had to constantly zoom in to speakers, then out to see questions from the audience. So I locked my iris at I think 3.4, and I had consistent light at every zoom level.
 
Okay for the video you showed in the OP, if you shoot in that type of environment, you should have ditched the HMC a long time ago, a DSLR will give you superior image quality.
 
booggerg2 said:
Okay for the video you showed in the OP, if you shoot in that type of environment, you should have ditched the HMC a long time ago, a DSLR will give you superior image quality.
Click to expand...
Good luck to film a show with a DSLR like a 7D. You can use it as a 3rd or 4th camera, yes. But not as a main camera.

It's not easy to use a 7D as a main camera with limited recording time, no servo zoom, no audio controls, no XLR input, no zebra, no waveform, etc... The AF100 will bring most of these things.

I do have a 7D, but will not use it as a main camera on a show. For this kind of thing, my HMC is my main camera.
 
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Had same issue that I addressed here a while ago - it turned out to be my lcd monitor. If I HDMI the cam up to my 42 inch plasma there is absolutely nothing. Thats why some other posters cant see what you are talking about...its all has to do with your screen. So nada to worry about.

Regarding picture quality - I too have concluded that it is not as good as I would like. But then again for the street price of now $3000, you get an incredible versatile cam with 99min HD on a $30 sd card, and a very good lens boasting 28mm equiv. wide angle. Yes both 7d and 5D produces cleaner more film like images - but then you have all sorts of limitations. It's all relative - I remember back in the eighties shooting with a 10000 dollar cam on Umatic highband - state of the art, and at the time with "incredible" picture quality............ What the HMC can produce is light years ahead and quite frankly pretty darn good!
 
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