@adamhanlon and Daniel Keller discuss the concept of the color rendering index (CRI) of artificial light sources. The quality of light used by underwater filmmakers can dramatically improve the quality of the produced footage, and Daniel explains why this is so and provides some practical advice to help ensure the best possible quality of capture.
Adam,
Thanks for making this for us uw film makers
We also have to say that today many LED arrays offer CRI higher than 92% minimum so there is a lot more choice out there
The other issue with CRI that is well explained in this video is that light in water has poor CRI in fact it has a lot of blue and that is why filters are also important is not sufficient to white balance even within the range of the camera white balance
On 10/13/2020 at 10:57 AM, Interceptor121 said:
We also have to say that today many LED arrays offer CRI higher than 92% minimum so there is a lot more choice out there
The other issue with CRI that is well explained in this video is that light in water has poor CRI in fact it has a lot of blue and that is why filters are also important is not sufficient to white balance even within the range of the camera white balance
Still.......Keldan is the gold standard, no ?
Still.......Keldan is the gold standard, no ?
Not in terms of CRI but in terms of overall design and ergonomics
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A CRI of 96/7 is pretty good. Its probably pushing the boundaries of what is possible from a chip in 2020 that mere mortals can afford.
A CRI of 96/7 is pretty good. Its probably pushing the boundaries of what is possible from a chip in 2020 that mere mortals can afford.
High power are usually >90 92 typical 98% yet are power limited Consider that most of underwater video lights are 85 and you dont reach 90 unless you are very close >90 is fine for practical applications at 15000 lumens and above