I kinda disagree with Michael here, Softness in light is dependent on the size of the source from the perspective of the subject. So if you are the subject looking at the source, then from your perspective, the size of the source dictates the softness. So a 2x2 up close can be softer than a 20x20 from in the distance, the sun 430,000 miles wide. Thats the biggest source possible, but its 92 million miles away, so when you look up, from your perspective, its a small hard source. It just depends on how much of your field of view does the source take up.
The first thing to note is that once there is a diffusion frame in between the subject and the light, the light is no longer the source the frame is, You have to look at how much of the frame is evenly illuminated to determine how much of the frame your new source is. If the diffusion is heavier, than the light will fill more of the frame and then the source will be the full size of the frame. If the diffusion is lighter, than only the center of the the frame will be evenly illuminated, and the size will be only slightly larger than the source you used, in this case lets say a 8 inch fresnel lens. Then with a light diffusion like 251 you might only get a 10x10 circle that is will be your source. It doesn't matter whether you have a 2x3 frame or a 4x4 frame, the source will still only be 10x10. That will be soft very very close to the subject and hard at a normal distance. If you move your light further back from the frame the hot spot will get smaller in the frame, so your effective source will be smaller, so it will be harder.
Just stand where your subject is being lit and look at the source to determine how big or small your source really is, if you put your light very close to 216 you'll see a smaller source, if you use lighter diffusion but don't shoot straight through it, come at it at an angle where the subject cannot see the source through looking through the diffusion frame, and it will fill the frame completely and be as soft if not softer than 216. The effectiveness of the diffusion is determined by where you put the light behind the diffusion and how much of the frame are you filling so just stand where the subject is and take a gander at the source!
Side note: source size and distance is proportional a 4x4 from 5 feet will be identical in softness to a 8x8 from 10 feet, because from the perspective of the subject they will be the same size. Also you have to factor in inverse square law as well, source will get softer the closer they get to the subject, but you have to find a balance with distance because the closer you get then the more abrubt the fall off. If you do have your source 3 feet away from the subject and the subject moves 1 foot the exposure will change by a stop. So you have to balance that with the benefits of closer sources for softness and find a happy medium where you are getting the quality you want.
Its plausible to me that all the photos could have been taken by the same photographer, theres not a huge difference. They admit it themselves that they expected more distinction. I think lesson is we should put less emphasis on the words creative and professional. They do not imply each other.
A more comprehensive article would be about the square root of 2 and its significance to lenses the inverse square law, and the human eye and why they call it a log curve. Thats the real math that filmmakers need to understand.
You're a videographer man you should know the difference between a gigabyte and a gigabit.
The alexa ev by a long shot. Theres no point in buying a c200 or Eva really wait and save a little more and you can get a used alexa ev for 11k
The price of the hotel doesn't matter, a dump can have more cinematic value then a 10 million dollar mansion, is there depth, do the walls have texture, can you shoot in layers of foreground mid-ground background, are the walls a muted color with a middle gray luminance, is there already a color scheme that will create a good color contrast, are the windows the right size for the quality of light you want for your key. Is it south facing, are there practicals. That is what matters,
There is a difference between dull and non-cinematic, you can have a room that feels dull and very cinematic.