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Posted 20 hours ago

CTO (Color Temperature Orange) Warming Gel Filter Selection Kit 8 x 8 Inches

£16.175£32.35Clearance
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Imagine the spectrum of color temperature measured in Kelvin going from “candle” (the warmest) to “dusk” or “moonlight” (the coolest). Its other core feature is that it can shine very defined highlight and shadow shapes thanks to its focusing lens at the front. This concludes my tests with the Rosco Photo Gel kit, I really hope you enjoyed it and that it will make you wanna try adding some colors in your next pictures.

use flash gels to color your lighting | Discover How to use flash gels to color your lighting | Discover

In the final shot I ended up warming it up a touch (increased the Kelvin value) in Lightroom and exported it at 3800K, but the ‘colder’ Kelvin setting here is to counter the warmer orange CTO gels. Working with color gels is a lot about playing around and always feeling like a beginner, or at least feeling free.Photographing a subject in a dimly lit area where you want to use a very shallow depth of field (large aperture). So if you set your camera’s WB to “tungsten” you will capture the background without any colorcast and it will look neutral.

s the difference between using CTO gels and CTB gels? What’s the difference between using CTO gels and CTB gels?

Use the broad lighting technique: place the flash camera right or camera left (at whichever side of the model's face you can see most of through the viewfinder). Rather than looking for a gel that wasthe same as the ambient light source, we needed to find one that was the opposite of the ambient color balance.Most ranges of gels also include non-colored media, such as a variety of diffusion and directional "silk" materials to produce special lighting effects. Take a look at the resulting image below, and remember, this final image has a Kelvin value of 3,400! When using flash it becomes important to choose your own white balance because the white balance of the flash may not match the white balance of the ambient scene. Use a CTO (color temperature orange) gel to balance the flash light with the color temperature of tungsten or sunset light. Not only will you need them for indoor flash photography but the CTO gels are a ideal when using flash for portraiture at sunrise orsunset.

CTO gels and CTB gels? What’s the difference between using CTO gels and CTB gels?

The acetate-based material was replaced by polycarbonates like Roscolar ( mylar polycarbonate) and polyester-based filters. To this end, it’s advisable to keep the optical snoot almost inline with the camera too, and again this helps to hide those very dark shadows behind the subject, rather than having them cast across wall. When shooting with flash in the shade or an overcast day, set your camera to the appropriate setting for the ambient lighting - in this case, dial your camera’s white balance to approximately 6800K to match the ambient light. These are all quite extreme examples though, you would probably need to be using the flash undiffused and quite close to the subject for the minimum power to be too strong. However, if we place something in front of the optical snoot and not inside it, the resulting shape will be very blurred and out of focus.

To create our gelled gradients, all we need do is simply place two coloured gels together in front of our optical snoot. I’m sure many of you may be wondering ‘what the hell the big streaks of orange across the models face is all about and how they got there’. What if it’s a cloudy day, or what if you’re shooting indoors with artificial lighting like tungsten bulbs? So if you can make both the light sources match in color temperature, you can then set the WB on your camera to that, and get a perfectly balanced image.

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