FLICKER FREE SPEEDS FOR FILMING WITH 50Hz HMIs FLOUROS

* film tests are always advisable to test camera speed and lamp for flicker

Frames Per Second

1.00 @ all shutter angles

1.25 @ all shutter angles

2.00 @ all shutter angles

2.50 @ all shutter angles

3.125 @ all shutter angles

3.333 @ all shutter angles

4.00 @ all shutter angles

4.545 @ all shutter angles

5.00 @ all shutter angles

5.555 @ all shutter angles

6.25 @ all shutter angles

7.142 @ all shutter angles

7.692 @ all shutter angles

8.333 @ all shutter angles

9.090 @ all shutter angles

10.00 @ all shutter angles

11.111 @ all shutter angles

12.50 @ all shutter angles

14.285 @ all shutter angles

16.666 @ all shutter angles

20.00 @ all shutter angles

22.00 @ 160† or 80† shutter angles

24.00 @ 172.8† or 86.4† shutter angles

25.00 @ all shutter angles

33.333 @ all shutter angles

40.00 @ 144† shutter angle only

41.667 @ 150† shutter angle only

48.00 @ 172.8† or 86.4† shutter angles

50.00 @ all shutter angles

100.00* @ all shutter angles

Speeds over 50fps with non flicker free discharge lighting can vary in exposure from take to take despite being flicker free. This is because you can ramp up the camera into the valley of the sine wave, reducing exposure. It's best to overexpose by 1/2 of a stop to compensate, or frequency lock the camera if possible.