Showing posts with label Aputure Diety. Show all posts
Showing posts with label Aputure Diety. Show all posts

Thursday, December 07, 2017

The Pared Down Video Rig. For those times when you must work hand held and want to travel light.


I recently worked on a project (as a second shooter and equipment renter) with a good friend who is a veteran videographer. While the project had one component that called for a three camera, two subject interview, with all three cameras on tripods and everything well lit, the rest of the project was classic reportage. We were tossed into unfamiliar interior and exterior locations and tasked with shooting unscripted documentations of diverse groups of people, along with on-the-spot, unrehearsed  interviews with people we were pulling from the locations.

It's one thing to shoot video when you have time to meticulously treat a room for good audio, and when you can spend a couple hours pre-lighting for an interview situation in a conference room, but it's a whole other thing to work on a windy day outdoors with difficult subjects (as well as people (non-subjects) in the vicinity who could have been dangerous and were very vocal about their distaste for any and all media presence) as the sun comes in and out of the clouds.

For me it was a two day crash course in how to most efficiently and effectively use a Panasonic GH5 as an ENG (electronic news gathering) camera.

Here's the rig (photo above) I've distilled down from my experience and the feedback of my boss, the director and producer (who was also shooting exclusively with a GH5...instead of his more familiar Sony FS-7).

The main thing is to work to the camera's strengths. This camera (GH5) does a couple of things really well. It's got great image stabilization (otherwise there's no way we could have gotten the smooth footage we did without tripods....). While it's very good at stabilizing the video image with any lens on the front it's even better with a Panasonic dual system AF lens on it. We used an Olympus 12-100mm on one camera and the inexpensive Panasonic 12-60mm  3.5-5.6 lens on the other camera. Both systems worked very well but the native Panasonic lens, in conjunction with the video stabilization in-body, was almost like using a perfectly balanced gimbal system.

I'm happy working with the Olympus Pro lens because I like how sharp it is, how much range it has and how easy it is to switch to, and use, manual focusing. If you are working in uncontrolled and quickly changing environments a lens that goes from the 35mm equivalent of 24mm to 200mm is great to have. In most situations I just didn't see how I would have had the time to change from one prime lens to a different prime lens...and still gotten some of the fast breaking opportunities.

The way I used the camera and lens combination most effectively (as far as focusing goes) is to turn off the "continuous AF" in the movie menu and to put the external camera switch setting at S-AF. I would line up a shot and then do a half push on the shutter button to get the camera swiftly lock in focus. Once I got the "in focus" confirmation light I could either push the shutter button all the way down or take my finger off the shutter button altogether and start the video recording by pushing the red, dedicated video button. Focusing was never an issue on this project. In S-AF, with center points selected, the AF just snapped into play and locked on in 100% of the situations I encountered.

Another strength of the GH5 is its small profile vis-a-vis a traditional professional video camera. We chose not to couple the cameras to Atomos external monitors/recorders (even though we did bring them along with us in the cars...) in order to keep the overall profile of the camera systems as non-intimidating as possible.

But losing the big monitors doesn't create much pain with the GH5s. The things you need in order to operate are still there: A perfect EVF and a full complement of video meters --- vector scope, waveform meter, histogram, audio level meters, etc. If we were working without the need to capture sound, as one might when trying to get b-roll for a project, we could have done without the audio adapter and the cage, but....

...the audio adapter is a low cost, high quality way to get professional sound into the camera. It's light and fairly low profile while providing clean pre-amps for professional microphones. My camera is set up with the adapter cabled to an Aputure Diety short shotgun microphone. The only thing missing from the photo above is a set of closed back headphones I use to monitor sound. With the switch of a cable I could have the microphone on a boom pole in less than a minute. Very versatile.

The final strength of the GH5 is its ability to shoot very, very clean 4K video into the camera at high bit and overall data rates. The stuff we ended up with was incredibly detailed and, using hand-tuned profiles, it was easy to color grade and match, camera to camera, in post.

Take the rig off the tripod, add a cool looking side grip to the left of the camera and you are ready to head onto the street, into a remote location, and have a chance at coming back with good material. In most instances I felt that I was the limiting factor. That's the way it should be..

Sunday, April 16, 2017

My Interview with Chanel as Billie Holiday in Zach Theatre's, "Lady Day at Emerson's Bar & Grill."

Chanel's Interview at Zach Theatre. Lady Day at Emerson's Bar and Grill. from Kirk Tuck on Vimeo.

I recorded this interview at Zach Theatre on April 5th. The still images I used as b-roll as from our dress rehearsal documentation on April 4th. The video footage of rehearsal was recorded on April 2nd. 

Tech notes: The still photographs were taken with a Sony RX10iii camera while all the video content was recorded with the Panasonic FZ2500 camera using its 4K video setting. I lit Chanel's interview with two large, Aputure Amaran 672W LED panels plus two smaller panels from the same company. 

Audio was recorded with an Aputure Diety shotgun microphone. 

My next video is an interview of the production's director. 

(please click through to Vimeo and choose the 1080p, HD version of the video for best quality). 


I decided to film Chanel's interview at Zach Theatre with the fz2500 because my early tests showed me that the color in video was rich and accurate, with little of the overly sharp renditions I'd seen in other, similar cameras. It's incumbent on a videographer to take the time to test the equipment ahead of time to see, personally, how the settings on the camera affect the final results. I was able to see a kinder skin tone rendition with the Panasonic.

I set the camera up to shoot UHD 4K with the idea of downsampling. But, rather than downsample by transcoding on the import of the material I decided to actually work with the original 4K footage in the edit and only apply the transcoding when making the output version into h.264. I thought I would see improvements in overall quality when done in this fashion. When I output the video to the h.264 codec I saw two things: The compression of h.264 exacerbates the noise by a bit (not too troublesome) and it also compresses the tonal range of the middle tones enough to make the overall files slightly darker than they are in Final Cut Pro X, or when played in their native format via QuickTime Pro.

Just to test a bit further and to see where the limitations really hit I also output the file to a Pro Res 422 HQ file. This file had 10 times less compression. The h.264 files weighed in at 695 megabytes while the HQ files tipped the scales at 10 gigabytes. Viewing them side by side makes on more aware of the destruction wrought by compression. The bigger file is much more tonally detailed; the tones are well separated and the tonal transitions are as smooth as they seem in real life. The bigger file also shows less noise in comparison. It's really a moot point for a project like this one which will be used on YouTube by my client. The amount of compression in YouTube's process is at least a whole order of magnitude more destructive than the conversion to h.264 out of Final Cut Pro X. I wish I could show clients, family and friends (and Chanel) just how good the high quality file looks on a calibrated screen in a viewing appropriate room.

I think the secret to getting good video from an $1100 cameras is to pay strict attention to fundamentals. There can be no slop in exposure calculation. If you need to bring up exposure from an underexposed file you'll end up losing precious detail and it will degrade image quality. Don't plan on boosting shadows after the fact; take the time (and light) to fill the shadows to the level you'll want them in the edit before you push the record button. Controlling the range of tones, and the overall dynamic range, is an artistic step as well as a technical process. They are intertwined.

The same applies to color correction. If you've worked with smaller Jpeg files in photography you'll know that they can't be totally corrected if you didn't get it right in camera. Push the blues and you kill the yellows; push the magenta and kill the greens. It's all as interrelated as the Buddhist view of the universe. If you are working with an inexpensive camera you don't have the luxury of endless latitude but, guess what? the DPs I talk to don't believe that their twenty and thirty thousand dollar cameras have latitude to spare either. They get color balance correct in camera. A quick custom white balance at the head of the interview prevents hours of slider jockeying and teeth gnashing later in the process.

If you have the color and exposure nailed into place then the next thing to worry about is shadow and highlight mapping. I use the shadow/highlight tool in FCPX a lot. For this I had a one notch increase in shadow exposure and a one notch decrease in shadow exposure (on an S curve) which helped to open up the shadows and keep highlights from burning out. In the CineLike D profile I used I changed several parameters. I upped the contrast by one notch, upped the sharpness control by one notch and decreased the noise reduced by three notches. In retrospect I should have also reduced saturation by a small amount.

I took the time to light everything. There is a big, soft main light and a big, soft counter-balancing fill light on the opposite side. I have lights on the background and a weak backlight on Chanel. The lights establish the highlight and shadow range and are critical to the way I see video.

The one place I wish I had more control was over the ambient noise in the theater. The theater is a large space and we were just a couple hours away from a full audience show. In Texas it is critical to keep the house at the right temperature and we were unable to turn off the air conditioning. You can hear as a low frequency noise bed. I was torn because a lavaliere microphone might have gotten me a bit less noise but the lower noise would have come at the price of really clean high frequency response and also clarity in the mid-tones. I made the choice and I'll have to live with it when I listen to the final result in a quiet room.

I hope you enjoy the interview. Chanel is a world class singer and actor and, I find, an interview subject who makes her interviewers look more competent. I appreciate the time and expertise she put into helping me tell this story about the her show; and about Billie Holiday.


Read this book and save your creative life.