A Visual explanation of Master Pedestal

Barry wrote, "You can't make the chips see more than they can see; all you can do is change the processing to preserve as much of it as possible. -15 throws away a lot, in exchange for giving a snappier/punchier reversal-film look. +15 doesn't give you any more info than you have at zero, it just makes it "grayer". So the key is to get as deep of contrast as you can, while still preserving all the detail. I think that sweet spot is around -6, you may find you prefer the look at around -3."

Ok. Fair enough.

My posts on this topic were inspired by Jarred's article's images, which, at least on my monitor, show noticibly more shadow detail in the zero setup column when MP is at -3 and 0.

So, you see, it's all Jarrad's fault!

Thanks, Barry, for your time on this.

Stephen
 
Hey, I know this is kind of off topic. I was wondering where I can access old articles that aren't listed on the 2 pages under the news-article section.

http://www.dvxuser.com/articles/CV44/

This article for example is not shown, so I thought there might be more like this. Thanks.
 
Draccan said:
I wish I had any idea what the difference between 0 and 7.5 is. I am with you on the Master Ped and personally prefer -3 to -5 but what are that Zero or 7.5 setup?

I hate to be the one interrupting with a newbie question, but....
Click to expand...

If I understand correctly, USA and different place have different black output or something. So on the camera, there is a Camera Setup menu and a Setup option.
Well on my HVX200 anyway.

It is based in % on that page. It at 7.5% default, but I wonder if Barry comment about DVX to be set to 0 for best result is the same for the HVX200.
 
mochouinard said:
I wonder if Barry comment about DVX to be set to 0 for best result is the same for the HVX200.
Click to expand...
I would say it stand for the HVX... ofcourse it doesn't seem to be as bad as the DVX at MP0 Setup 7.5, but it does make the image look ALOT better.

I am very happy I learn this. It can also help to get rid of unwanted shadow background.
 
Maybe I'm crazy or it's just the jpg compression for the test images but, the
0/MP-0 image looks noisier in the shadows than the 7.5/MP-0 image.

S0%20001.jpg
S75%20-0%20001.jpg
 
I'm confused...

The 7.5 and 0 IRE plus the range of -15 to +15 all refer to Master Pedestal? How can there be two different setups using the same variable?

Also, what does IRE stand for. I searched for dedicated topics, but couldn't find any.
 
IRE I believe stands for International Radio Engineers and it is a unit used for broadcast video. Something about how much voltage goes into the signal for broadcast.

The Master Pedestal range of -15 to +15 is a setting used to adjust the "ped" or foot of the gamma curve. Think of the gamma as a diagonal line rising left to right on a graph. The line is not straight, but rather forms (or tries to emulate) a lazy S. the bottom of the S is your foot, or pedestal. it deals with the shadows in the picture. What you are essentially doing is shifting that bottom of the S up or down, allowing it to dig into blacks a bit more or less depending on the setting.

What the set-up refers to is a purely broadcast hold over and something you should leave at 0 unless you know what you are doing and are sure you want it at 7.5. The only reason you would want this is if the HVX was being used as a live camera and its signal was being fed directly to a live broadcast without any post. The reason being, is that in the US, televisions are set up so that 7.5IRE broadcasts as black. Most broadcast networks will dub footage to digitbeta for broadcast and these decks are set up to add set up automatically.

So if you add set up to the picture in the HVX, then send it to an editor and he edits the footage and then spits out a master to digibeta or whatever format the station is using you run the risk of adding set-up twice. Thus washing out your image. Since the HVX already shifted all blacks to 7.5, and this deck is now shifting your footage again, your blacks will look milky and washed out.

So in short: leave set up to the post guys. Use master pedestal to tweak the look of your footage in-camera.

(edit: I just looked it up and IRE stands for Institute of Radio Engineers, not International Radio Engineers)
 
Is IRE a changeable variable via the menus then? If so, what is the name of the setting?

I'm not saying that I want to change it, I just want to make sure it's set to 0.
 
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