On 21/08/2019 11:50, John Rumm wrote:
On 21/08/2019 00:04, Fredxx wrote:
On 20/08/2019 18:47, ARW wrote:
Swapping 1000W HQI fittings for 240W LEDs.

And any chance it could mess up any filming due to strobe effects?


Isn't the HQI a discharge tube, so no temporal filtering from a
phosphor? In which case they will be similar from a strobing effect.


Depending on the sophistication of the LED driver (and for that matter
the ballast in the HQI fitting). Both could have high frequency drivers.

Even high frequency drivers tend to have limited smoothing and give
discontinuous light in keeping with the mains cycle.

If anything the LED might provide a more constant colour temperature
over the mains 1/2 cycle.

It will likely be a different emission spectra either way.

You're likely right, just reminded myself that LEDs use phosphors to
provide the appropriate colour temperature. Those phosphors will have
differing decay times.