HD Colour Correction

Hi Guys,
Just wanted to get your thoughts on colour correcting HD formats, to be more precise DVCPRO HD. I am of the understanding that a broadcast monitor is the industry way of seeing accurate colour for colour correction. But this is my thinking, due to the physical limits of CRT Technology is it the only method of seeing accurate colour?
If we were to use a HDLink box with a 24" monitor for colour correction would this be ok? Or would we have to consider both methods? Your thoughts would be very much appreciated and if you need any more info from me please let me know
James
Dual 2.3Ghz PowerMac G5, 1.5 Ghz Powerbook G4 Mac OS X (10.4.6)

I am using a Sony PVM-14L5 Multiformat monitor. This accepts an HD signal via component, or like I am doing it, via and HD SDI option card. It has 800 scanlines of resolution and when balanced, comes DARN CLOSE to equaling the $35,000 HD monitors.
A computer monitor is not acceptable for broadcast color correction. It doesn't show you the proper colors. I have seen only 2 LCD screens that I deem good for HD color correction, one is made by a company called ecinemasystems.com and the other I think was a JVC..but not sure. CRT is still the way to go until more LCD options hit the market.
IMHO.
Shane

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I agree with Mylenium. There are some serious flaws in the instructions. With no colour in the solid, Color Balance will have no effect.
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I was having the same problem but i fixed it for me.
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You always color correct after...and you always do each shot individually, even if they are 15 frames.
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http://www.amazon.com/Apple-Pro-Training-Encyclopedia-Correction/dp/0321432312/r ef=sr11?ie=UTF8&qid=1238509072&sr=8-1
http://store.creativecow.net/p/66/stopstaring_and_start_grading_with_applecolor
http://www.amazon.com/Call-Box-Digital-Correction-Workflow/dp/B000UZUL3Q/ref=sr115?ie=UTF8&s=dvd&qid=1238509138&sr=8-15
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Problems colour correcting multicam in angle editor

Hope someone can help:
I'm trying to colour correct one of the multicam clips in the angle editor.
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I have spent the better part of today searching for solutions to this very same issue.
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I have recreated this same issue.
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How to do a colour correction like this!?

Hey guys,
I saw on YouTube this nice colour correction, and now I want to ask you how to do this? Is there anywhere on YouTube (or I don't know) a tutorial for this?
--> [The colours from 16sec till the end] http://www.youtube.com/watch?v=iz2DRX4oxgI&feature=channel
Thank you.

Create a comp-sized solid layer above your footage layer. Apply the 4 Colour Gradient effect to the solid.
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Best way to colour correct these shots?

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http://www.flickr.com/photos/35672265@N06/6895813149/in/photostream/lightbox/
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Blackmagic has a free version of Davinci Resolve.
the minimum requirements can be found here:
http://www.taoofcolor.com/570/davinci-resolve-the-free-version/
The software can be downloaded from here:
http://www.blackmagic-design.com/support/detail/?os=mac&sid=3948&pid=11735&leg=f alse
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Yes, Thank you
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(much better than Flash 8 I think)
Is there a way to improve footage for H264 ?
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After recent update to 10.0.6 clips with colour correction lost right hals of the clip

After update to 10.0.6 in projects created before update, some (not all) clips with colour correction appiared with right half of the screen in total black like this:

Can you see it now?
the media - is proxy. High quality media is optimized media converted from Canon 5D footage. No third party software

Shimmer or flicker after colour correction

Greetings all,
I had great fun doing a selective colour correction turning a vibrant green ground cover to an autumnal brown, without affecting the figure or stones moving in the picture.
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I have played with edge control, luma and saturation width and softness, as well as de-interlace and flicker filters - to no avail.
I do not know the root of the problem...it is as though colour values which the selective colour correct filter applied to are fluctuating subtly at a high frequency. (nothing visible to this effect in the unfiltered clip). I am stumped.
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I'm going to assume you're looking at this on a CRT (how else would you see the flicker), and that it is rendered at full quality.
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This seems a little unlikely considering you just removed the vibrant colors instead of adding them. But who knows...
You don't say whether this is a video clip or a still image. If it's a reduced still it may have other issues ythat were masked before. An easy thing to play with is to apply a very gentle Gaussian blur, vertical only. Sometimes as little as .1 (don't know what units this setting is referring to) will do the trick.

Is it possible to safely monitor good colour correction using BM Intensity?

Is it possible to safely monitor good colour correction using my output of my Black Magic Intensity Card? It has an HDMI out so Im thinking there is no need to go to an external VTR and then into a Monitor. Also, I cannot afford an HD monitor.. not even close! SO im thinking to use a 1080p Samsung computer/TV monitor. I hear for the money they make excellent (budget) monitor substitutes?!
OR maybe just buy another Apple 23" HighDEf monitor?
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This question keeps coming up in different contexts, with a variety of answers. Correct color depends on correct calibration all the way through the chain from digital signal to playback. No single hardware piece can do it all, even a perfect monitor, without calibration.
As JP correctly states, Rec709 is the standard for HD, Rec 601 for SD. These standards define the color temperature of gray, 6500 in both cases, and the specific color of the primary that generate the 6500. The 6500 needs to be generated correctly at all gray levels from 0 to 100 IRE.
In addition, the luminosity needs to track the 2.2 (or 2.5) gamma curve closely.
Lastly, the monitor needs to have 0 overscan, and high enough resolution to clearly see the finest resolution the input is capable of.
Some of these adjustments can be done by eye - most require a spectrophotometer of some kind, and a monitor that has all the adjustment capability to perform the adjustments.
The best way to make these adjustments is in hardware, but in the cases where this isn't possible, it is possible to generate a color look up table (LUT) to compensate for some, but not all errors. Apple's colorsync is such a LUT, although it cannot adjust for the primary colors, it can do gamma and the 6500 balance.
More of an answer than you wanted I know, but that is just the way it works.
You can have less expensive equipment give good results with proper calibration, and the best equipment uncalibrated provide terrible results.

Delving into the murky seas of Colour Correction

Hi,
Recently we went on location and took a series of test footage shots. These shots were from various locations, as well as various times of day. We are aware of the "Before 10am and After 4pm" shooting rule, but, being the curious little chaps we are, we decided to try a range of shots and see what we can achieve in post with colour correction (sorry, I can bring myself to leave out the "u").
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2) The second question is specifically for the shot mentioned above - I will add a screenshot below. I am not sure what was done on location to produce such a terrible blue tint, but it is in fact a brilliant shot for me to test on. I guess that a perfect shot would have been pretty useless as tool to hone my skills on! If I use no limiters on SACF3, I can get the brightness up quite nicely and remove a great deal of the tint, returning the shot to a very pleasant one - on my PC that is - How would I go about doing this, assuming the answer to question 1 is that I need those limiters enabled.
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Hi Guys,
CFG_2451,
Thank you for the link - I will look into the book first thing in the morning. I have already built up a rather nice After Effects, Filming, Lighting and Green Screening library, I look forward to adding Colour Correction to it. I did assume that I would have to adhere to the PAL standards, but hoped that HD would do away with all the worry - Oh well....
Dave,
Thanks for the tip, I am a big fan of Andrew Devis, and have collected his entire After Effects basics tutorials so far - He has a great way of explaining the tools he uses, and I enjoy his clips. I will check out his Color Finesse tutorials tomorrow while I wait for the book.
Mylenium,
Thanks for the info. I had my previous iMac colour corrected to work under the specific lights we had in the old office, now I am in a new office, and I have a new PC. I hope that the monitor I have for the PC will be ok. We bought a nice large LED HD TV a while back, and the guy who came to do our colour correction explained that it was a bit of a waste, as it has so many "Auto" settings with no real explanation of what they do. As a result, he explained we would never know exactly what was going on, or if the TV was trying its own correction in the background - making what we see, completely different to other screens. I dont think we can get a production monitor at the moment, but Ill get them in to check what they can do with my PC screen. I still use an iMac, but it has the latest OS on, and according to the colour chaps, the software and calibration unit they use is incompatible with it. So unless I want to buy my own calibration units, Ill have to stick to the PC.
Once again, thanks to all so far. thes past few months have been an incredible journey, and withtout the input from the people on this forum, it would have been over ages ago!
(I am going to have to make a special mention of each of you in the shows credits!)
Pierre

Tutorial for Colour Correction and Green screen

Anyone know of any good tips to remove the green look from white hair? or any tutorials I can read for colour correction with green screen?
I filmed a getlemen who has white hair on a green screen. The colour of his hair picked up a slight tint of green and I need to remove it. Can anyone lend some sound advice.
Thanks

Your best chance is to study the manual carefully and to cycle through the chromakeying filters you have at your disposal. If you were using DV, you will probably need to purchase a far more capable keying application, one that compensates for DV's terrible chroma resolution.
The books on the shelves at Borders and Barnes/Noble for After Effects and FCP will help you get the most from your existing key filters. You will ned up stacking several copies of your footage with different key settings. Without preproduction, the proper lighting, a good camera and adequate tape format, managingr a good chromakey in post is very difficult.
google chromakey, too.
bogiesan

I need to colour correct copies of nearly three hundred paintings.

I took great care to find colour corrected daylight lamps, but, they are of the fluorescent kind, similar to the eco lamps that are now commonplace. Because they do not have a continuous spectrum (that tugsten would have) they have given all the paintins an unwanted colour cast. Can I correct one in Lightroom and save the corrections and apply them to the remaining images? If so is there a recommended way of doing it.

All tungsten bulbs are full spectrum. Their problem is simply that they tend to be very orange and so require a white balance adjustment, but that's easy to do in Lightroom. My favorite incandenscent/tungsten bulbs are by SoLux, and my favorite fluorescents are by Full Spectrum Solutions.
But you can get some of the best results by photographing the paintings outdoors in natural sunlight — particularly on an overcast day — since there's a lot of bright, diffuse light, and you don't have a problem with bright spots as you do using bulb sources. What I do is bring my paintings outside and set them up beneath an overhang so the light isn't too direct, and place a sheet of black velvet under them to prevent the ground from reflecting light back up onto them.

Colour corrections not saving and not exporting

Am puzzled by something in FCE. I did a whole load of colour corrections, then saved and closed the project. Whenever I re-open the project, all the colour corrections are un-done. All other edits are unaffected. This happens repeatedly.
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My timeline is 3.5hrs long, and re-doing all these colour corrections is *time consuming*.
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Any help appreciated.
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No.
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HD Colour Correction

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