As summer approaches, many divers are ready to buy their own diving equipment, just waiting for a good diving trip as they wish.
Today we will talk about the dive torch in the dive equipment, and also bring you to know a new professional term - colour temperature, and teach you how to choose a suitable colour temperature dive torch.
What is colour temperature
Colour temperature is simply the warmth or coolness of the light colour. The lower the colour temperature, the warmer the light colour and the higher the colour rendering index; the higher the colour temperature, the colder the light colour and the lower the colour rendering index.
The colour temperature of the warm light torch we use in our daily life is usually in the range of 3000K-4500K, and the colour temperature of the white light torch is usually around 5500K-7000K. So the question is, why use temperature to define the colour?
Let's think about it from another angle: an iron bar, you burn it hotter, its light is not from dark red-orange red began to white-blue-violet transformation, and the colour of the iron bar is determined by its temperature, now you have the concept of colour temperature in your head?
What are the manifestations of different colour temperatures?
LED will write the colour temperature, colour temperature is not brightness, it belongs to the warm and cold value of light, that is, when you buy torches often hear ‘cold white’ and ‘warm white’, so which colour temperature is more suitable for diving?
First of all, warm colours, but too ‘warm’ is yellowish, the more yellow light, underwater penetration will be stronger, but the object will be relatively poor colour reproduction, so in the turbidity of the poorer translucency of the sea can be appropriate to use warm yellow light.
Secondly, what about cold colours? Most of the torches are now cold white (colour temperature 6500k), cold white light is very harsh, poor underwater penetration, see the object colour reduction is not as good as yellow light.
How should I choose the colour temperature?
Everyone has a different preference for colour temperature, so there is no complete definition of good or bad colour temperature. I have contacted many divers who have different colour temperature preferences, some of them prefer yellow light, but many others prefer white light.
If you don't have a clear preference for the colour of your flashlight and you are in good water quality, then we recommend that you choose a white torch in the 5500k-6000k range. Because the colour temperature of this range of torch is very close to the sun at 12 noon, the refraction angle of underwater objects, the colour reproduction of living things, the effect is excellent.
If you are in the water quality is relatively poor, then it is recommended that you choose yellowish light diving torch, because yellow light torch underwater penetration will be a little better.
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