March 17, 2009
By Oliver Peters
As an editor and colorist, I’ve used a number of NLE color-correction tools, ranging from Avid to Final Cut Pro. I like Apple Color, but, for quite a few projects, the prep time that’s necessary to use it makes color grading within Final Cut a more attractive solution. For a variety of reasons, I still find myself doing advanced color correction inside FCP — even for feature-length films. I’ve developed a recipe of go-to plug-ins and a grading workflow that helps me create the ideal look. 
Coloring the music video “En Mi Vida” for singer G.No. (Image courtesy of Gardelino.com)
Open playhead sync — a color-correction mode At the start, I move all possible timeline clips down to video track V1 and change the playhead sync mode in the Canvas window to Open. This loads the sequence into the Viewer window, where the filter tab will reveal any effects applied to the sequence clip where your playhead (current time indicator) is parked. Working in this mode allows you to advance from one clip to another and immediately apply new filters. You are actually operating in a manner similar to Avid’s dedicated color-correction mode, except that in Final Cut Pro you can also apply and tweak other effects filters within the same window. Naturally, I open the video scopes tool to monitor levels. Although I still prefer external hardware scopes, the built-in software scopes get the job done.
Lift – gamma – gain There are three main color grading plug-ins to use: the built-in Final Cut Pro color corrector, FCP’s 3-way and/or Magic Bullet Colorista (Red Giant Software). The basic color corrector is for simple things and gives you the ability to shift hue, but I go straight to one of the 3-way correctors. Colorista is somewhat cleaner than the FCP 3-way, but the built-in filter performs better in real time. For the majority of the timeline, I will use the FCP 3-way to create a primary grade.
You can also stack various color-correction filters for a cumulative result. Doing so is similar to applying several Secondary tabs in Apple Color. For example, you could apply the built-in 3-way to a clip and set the contrast, brightness, saturation values and a neutral color balance. On top of that, you can apply a second 3-way (or other filter) and further affect the full-screen image. Let’s say your client is trying to decide between a warmer or cooler look. You could try to do this all within a single filter or you could apply three filters: one for neutral, plus a second to tint the neutral tones toward red or a third to tint them toward blue. Enable/disable the filters to select between the two looks that you are trying to establish. Shapes, windows, vignettes A hallmark of top grading solutions, such as da Vinci Systems’, is Power Windows. This feature lets the colorist mask portions of the screen and apply a separate layer of grading within that masked area. Artistic application of Power Windows permits the colorist to “relight” a scene. Apple Color offers this, too, but you can get similar results in FCP by applying additional filters. My favorites are Face Light and Colorista. Face Light is a freebie created by Australian Marcus Herrick that has the effect of brightening the image within an oval area isolated by the plug-in. You can control its size, aspect, softness and opacity (level of brightness), as well as blur the highlighted area (good for softening facial wrinkles). Add Face Light over a person’s face for a bit more snap when simply raising the gain in the regular 3-way corrector doesn’t work or causes you to blow out the highlights. Two or three people in the shot? Simply add a
Face Light filter for each person Magic Bullet Colorista works as a full-screen filter, but you can also use it to perform the same type of function as Face Light by using Colorista’s round or rectangular masks. All color-correction adjustments may be applied inside or outside of these areas, so it’s great for grading isolated portions of the image, like the sky or a bright window. In addition to the typical lift/gamma/gain color wheels, there’s also an exposure slider that brightens the image in a very photographic way. A number of indie features have been graded entirely with the Colorista filter. It can also be installed and used in Apple Motion, Avid Media Composer and Adobe After Effects.
One more common filter in my recipe is Vignette, another free plug-in from Herrick. Lens distortions — such as lens vignetting, where the outer edges of the image darken — tend to trick our minds into seeing an image as more filmic. Sometimes this is a natural byproduct of the lens selection but often is artificially introduced by the DP. Subtle use of the Vignette filter tends to focus attention toward the center of the frame and sells the image as more artistic. The filter I use not only lets you change the quality of the vignette, but also adjust its position. Sometimes a vignette effect looks best when it’s off-center.
Special effects/stylized control of the image I grade with a combination of filters to achieve artistic goals but typically stay away from the many stylized filter packages when doing standard color grading. There are many that I do like, including those from Nattress, Pistolero, Magic Bullet, Noise Industries and DV Shade, but I reserve such image effects as Technicolor, bleach bypass and chromatic glows for special cases, like dramatic flashback scenes. The exception is Magic Bullet Looks (Red Giant Software). This is my go-to for more advanced effects that mimic in-camera filtering, including graduated filters, selective focus and swing-and-tilt lens effects. The results appear very photographic and the feature set offers quite a few color-correction tools, like curves, which are missing from the regular Final Cut Pro toolset.
Staying legal The last step is to apply two more filters across the entire timeline if your master is for broadcast television. The first is FCP’s Desaturate Highlights (or Lows) filter. This is really a single filter, but it exists twice in the folder with either highlights or lows enabled by default. As you lower blacks and raise whites to achieve more contrast, dark colors like reds and blues get shoved to the lower boundaries of the video signal and bright colors like yellow get hotter. Extreme color grading may result in illegal video levels, so it’s necessary to reduce color saturation in the light and dark regions of the image. Be subtle!
I’ll say the same for the Broadcast Safe filter — the second of these last two effects. I’ll create a custom setting that’s not too harsh. RGB Limiting in that filter is disabled because I’m mainly interested in clipping extreme luminance levels. I prefer to fix levels through my grading adjustments and by paying attention to the built-in waveform monitor and vectorscope, so my use of the Broadcast Safe filter is only to clip the last few percent. Here’s the trick to applying any filter across the board. Add the filter to one clip and set the values. Now copy-and-paste that filter to the browser. Remove it from the clip. Highlight all video clips in the timeline and drag-and-drop the filter from the browser to the highlighted timeline. If you have several filters to apply this way, make sure you maintain the proper order so that the correct filters end up on top. In the case of Desaturate Hi/Lo and Broadcast Safe, these should be the topmost filters on each clip.
There’s nothing left to do but render. Adding this many plug-in filters to a 90-minute HD feature film takes hours to render — often overnight for half of the film, even on a fast machine. So plan on at least three days for your masterpiece — IF you’re fast. Or work in sections and render overnight. Make sure you budget additional time to evaluate the overnight render first thing in the morning. You may not like everything you did when you see it in the cold light of day, so make sure you have the time to tweak. Happy grading!
| COMMENTS (3) | | 03/22/2009 | | Can you explain the color used in many of the new films and music videos that have the blue and green or mostly the army green look. Is this achievable in Magic Bullet Looks? |
| | 03/19/2009 | | A very clear explanation thanks por the tips.
I've used (the wrong way I supossed) the Boradcast Safe filter to keep a legal signal por analogic output and I try to double chek it in Luma and croma untill I get it right to export it as a Quiktime movie. The thing is, wheh I import the Quicktime file frequently the FCP marks the signal ,in luma overall, out of legal range. Where is my mistake?
Thanks again |
| | 03/17/2009 | | Don't you mistake Colorista for Magic Bullet Looks ? |
|
|
|
More...
|
|
|
|
|