Remember..."a great idea on the set is not always a great idea in post"......now while you might be convinced that shooting in B&W is what you want, you won't be in a good spot if after you shoot, you change your mind and want it in color. Most will just turn down the color on your monitor while shooting, then make it B&W in post. If you like it, keep it...if you don't, you can go back to the original......just a thought.
Well, I don't agree - as someone who shot film for many years, and had to make the choice of film stocks at the outset, I'd say that a creative choice is a creative choice.. Almost all the video I've seen that has been altered in post looks phony - You light and compose differently for B&W (ie. color often has an effect on framing, at least for me).. Also, there are some contrast fitering possibilties with B&W (not as useful as film though). One of the things I like about the AF100 is it's great ability to create a B&W image (it even has a setting) that doesn't look like color video with the sarturation drained in post (that camera has terrible chroma clipping, but not a problem in B&W, that's why I've kept it)...
I'd commit. then test with saturation cranked down on various profiles. But do a lot of testing and download a clip of something like CITIZEN CANE, HUD or THE SEVEN SAMARAI and split the screen for your tests. As for contrast, that is one thing you can add in post (often done with film) but not take away.
You are correct and good suggestions....I was merely pointing out to make sure that is what you want to do....about 10 years back, I had a client, shooting on a DVX100, who asked exactly that and I told him no....3 months later he came in and asked "who was the best colorist in town"......
That's all.....
1 argument for in-camera:
the af100 is probably a good B+W look to you because of it's latitude being closer to b+w stock. also, sucking the color out in camera gives more bits to brightness levels.
1 argument for in-post:
As for contrast, it would be more beneficial to adjust in post, because if the footage is B+W baked in, you only have brightness adjustment. No manipulation of color to change the corresponding grey scale level of a color image. I'm taking about selective color adjustment, BEFORE turning the image black and white.
Personally, I'd probably shoot it in color and do the B&W treatment in post. If your monitor is able to use LUT's, maybe create the look and load it into the monitor so you can see it while you're shooting. I shot for a doc series that ended up being B&W, but we were not told this while we were shooting. It would have changed the way that I lit it for sure, because most all of the interviews that I saw when it ran just looked like someone turned the chroma all the way down instead of something shot B&W.
Another piece of 'food for thought', most still photographers that do B&W shoot color so that they have all of the image information to use in post(those that shoot digitally).