I shot an interview a while back, and I messed up.
I rented an Arri 3 light kit and set everything up and, wow, it was nice and bright, and for some brain fart of a reason, turned the shutter speed up, and it was strobe and stutter looking.
So, I obtained a 1.8 (10-stop) ND filter.
I don't own the light kit, so... I whipped up this quick test by just leaving the white balance to auto, and messing with just the shutter speed. For video I will want 1/60, but for this test I just ended up at 1/80. I have a small "daylight" fluorescent desk lamp and just shot straight into it.
These are just the raw shots:
No ND Filter
For these I sampled the red circle area with the white eyedropper in Photoshop Levels:
No ND Filter
Not too bad really.
In the first batch, within reason, the detail came out close and in the corrected set it was not hard to almost get the white matched up. Not perfect, for for the small amount of work I put into it, pretty close.
What are some production tips I might can use to make this ND filter work? I won't know if 1.8 is too dark until I get the light kit again. I doubt the light kit will be as bright as shooting straight into this desk lamp and I still have aperture and ISO settings to futz with to keep the shutter dialed in at 1/60. I could use a custom white balance. What else?
I use a T2i and a 70-200mm f2.8 L Lens. At some point I will want to use these larger apertures to get that DSLR shallow DoF, so I just left the lens at 2.8 for this test.