CINEMATIC LIGHTING: Understanding Daylight vs Tungsten

  • il y a 6 ans
We are getting more and more technical with our lighting goodness and today we are taking a close look at the differences between daylight and tungsten in terms of color balance for both lights and the white balance in your camera. With a clear understanding of these two main elements of lighting we can move on to manipulate color in lighting to achieve incredible epic cinematic images.\r
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-Transcript-\r
Before jumping into colors and they can be used to support and further the story, in part one of this video, well explore some basic concepts that will be the foundation of whats to come.\r
So before talking about coloring your lights, lets take it a step back and talk about color correcting your lights. This topic can get pretty extensive and I will probably have a separate video for the various types of lights that require different types of correction, but for this video we will just focus on tungsten and daylight color temperature in a broader way. \r
The two might sound familiar to you even if you dont have much experience with lighting since they are often times white balance presets on your camera. The color temperature for your white balance on your camera and the color temperature of lights are very different things that serve the same purpose. Before we dive into what it means as far as lights and what it means as far as white balance lets take a look at the color temperature and how it reads in general.\r
Like I mentioned in the last video, tungsten is measured at 3200K and Kelvin is the unit of measurement for color temperature. This reads as a warm orangish look. \r
Then we have Daylight balance which is on the cooler blueish side of the color temperature spectrum.\r
In camera you are adjusting your white balance to read your scene properly (unless you are going for a particular type of effect). So if you are inside and have a bunch of lamps with incandescent light bulbs, which are usually tungsten balanced, then you would set your cameras white balance to tungsten. If your primary source of light is, lets say, coming from a window, then you would set your cameras white balance to Daylight since the color temperature coming in from the sunlight would measure roughly at around 5600K. \r
Beyond the camera, in your scene you can control what color temperature your lights are. You can do this simply by deciding whether or not your primary source is the sun or a desk lamp for example.\r
You can tie this in with what we talked about last week which is motivating your light with prical lights or by establishing a scene with a wide shot that lets the viewer understand where light is coming from.\r
You can then color correct individual lights to read at a certain color temperature to match the source of that light. So for example we can set our back light to daylight balance and keep our key and fill tungsten. This could work if in your scene there is a window behind our subject and a lamp in the room casting a warmer light.\r
This stuff might sound confusing at first especially when you are designing your lights in your scene but with time it becomes easier. Key points to remember for now are \r
TUNGSTEN - Warm/Orange Look 3200K (Indoors)\r
DAYLIGHT - Cool/Blue Look 5600K (Outdoors)\r
So now that we understand this in theory, how do we ually do it?\r
The answer is gels.\r
For this video we are going to look at color correcting gels. These are slightly different than normal coloring gels since color correcting gels are used to convert the color balance of a light. The B in CTB stands for Blue. The O in CTO stands for Orange.\r
If you want to warm up a daylight balanced light you would add a CTO gel. If you want to convert a tungsten balance light to a cooler and more blue color then you would add a CTB gel.\r
There are also a number of gels that convert the numerous types of common fluorescent lights to mix better with tungsten or daylight sources but I will dedicate a full video that will go over every type of light and what gel to use to color correct those typ

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