Reddit mentions of DSTE Replacement for 2X NP-F970 Battery + DC01 Travel and Car Charger Adapter Compatible Sony DCM-M1 MVC-CD1000 HDR-FX1 DCR-VX2100E DSR-PD190P NEX-FS700RH HXR-NX3 as NP-F930 NP-F950 NP-F960

Okay! With those parameters, assets, and budget, you have two good options.

The first, and probably easiest, will be doing exactly what /u/MacintoshEddie has suggested and throwing $400 at a local filmmaker and seeing what they can do with your well developed idea.

The second is, in my opinion, more fun, but it'll also require you to learn a little about filmmaking yourself.

The good news is, you already have most of the tools you need to create a "my first documentary" video and do it well. The camera on the iPhone 7 is better than any camera you're going to purchase below $200, and if you drop a couple bucks on a tripod and iphone adapter you're going to be set.

The biggest downside for you will be audio. Audio is the thing most fresh-faced filmmakers overlook, but it's just as-- if not more-- important as video quality. The onboard microphone in the iPhone is oooookay, but if you're more than 3 feet away from your subject, it'll get dicey. And unfortunately, this is the only place the iPhone falls short of a $250 Canon t2i.

Traditionally, there are two ways to do audio: in-camera and synced. In camera is when the audio and video are recorded together inside whatever camera you're using. This is a little tricky for the iPhone, because it's harder to attach a decent microphone. There are ways, but I'm not fluent in them. If this were a DSLR like the t2i mentioned above, I'd suggest you drop $150 for a Rode Videomic and call it a day. Since that's not an option (that I know of-- there might be a 3.5mm microphone jack adapter for the iPhone 7!), we need to look at the second audio solution: synced.

Synced audio is when you record the audio and video separately, and then synchronize them in post production. First off, post production is a fancy way of saying "editing the video." For professionals, there's a whole lot more than just editing, but for you, this'll be when you're bringing the footage onto your macbook and likely editing in iMovie.

For synced audio, the best option will be purchasing an $85 Tascam DR-05, a cheap microphone boom stand, and this adapter. Attach the DR-05 to the boom, throw something heavy on the base of the stand, and you'll have a good setup to capture audio for interviews and stationary events. However, you will need to "slate" each shot.

A slate is that black and white clapper board you see whenever film is depicted in media. It's purpose to to create a spike in the sound, as well as a visual indicator, so whoever is editing the footage can synchronize the audio and video. You can get away without a slate by simply clapping your hands in front of the camera.

If you go this route, I would suggest ONLY trying to do audio for interviews, and maybe stationary events where your camera won't move around. The audio captured on your iphone for "action" shots or "in the wild" shots will be okay as long as you have decent quality audio for the interviews. This will also save you time while editing, because syncing audio is a pain in the butt.

Now, if you haven't been scared away yet, and still want to spend a little money to make those interviews look extra-sexy, imma talk about some of my favorite lights on the market right now.

I've thrown together a $180 light kit for you that'll help you light your subjects in most lighting conditions. I use the YN600 Air for a key light (main light), and the YN300 for a fill light (remove unwanted shadows, dark background, etc). They're not as bright as some other LED options, but you won't need to worry about modifying the light at all. The YN Air series does a wonderful job of creating a nice, soft lightsource that won't screw with skintones or create harsh shadows. I've also thrown in two good stands that include a bag, and two power adapters to run the lights. If you want, you can spend an extra $60 on NPF batteries and chargers (I'd suggest these and then these ) to make the lights completely mobile). In addition to being excellent video lights, I've found I also keep my 300 set up in my room as a evening reading lamp!

Obviously, the lighting isn't necessary, but I promise you it'd be worth the investment when it comes to the final quality of your video. Both have an extremely easy learning curve, produce excellent results without needing to set up screens of diffuse, and their size makes them an afterthought when traveling.

So now that you're overwhelmed with all that info, let me recap!

Option 1) Have someone else do it!
Pros: You need to learn less, less stressful, less time spent on your end
Cons: Limited scheduling flexibility, $400 won't secure someone for months-on-end

Option 2) Do it yourself!
Pros: Complete control over the final product, working on your own time without worrying about other people, and new toys!
Cons: way more work, way more learning

Overall, you have two solid options to make this work. You could even combine the two: get the tripod and grab "on site" shots while paying someone else to produce your interviews. You'd still be up for editing, but you wouldn't have to worry about the nicer quality audio/syncing. With either option, you're going to end up being the producer/director of this video, which means you'll be doing the scheduling and coordinating, as well as creating the idea and communicating it exactly to everyone else you're working with.

Even though this may all seem really overwhelming right now, the best way to get the documentary done is to simply start working on it. Write up a summary of your vision, start asking around, and trust yourself to create something good. This subreddit is an excellent resource, as well as plenty of youtube channels and other forums out there. Additionally, if you ever have any questions, don't hesitate to shoot me a message. :)

/u/jdriselvato - sorry to hear it's not working for you. I don't have the Juicebox, but $109 seems like a lot of money for a single 58wh battery.

[Here is a picture] (https://photos.google.com/share/AF1QipPTBisX8xSZIiueA-7nCRSVL5V93A97QPmZ4CQBTmtYfb11NCBg0EokseSHKAVQpg/photo/AF1QipNS821Sth6kzF2dlM_Kif_Se8j7praE58lUmUfF?key=TFN3N1Q4bEJfam5ZbUp3akxYbVhDN3BEaXl5UHZ3) of what I did. You can get more than 58wh of power from this setup - and you'll pay about $45 less:

• [ILED NPF-Series Battery Plate Adapter for BMPCC - $18.90] (https://www.amazon.com/ILED-Battery-Adapter-BMPCC-HDV-Z96/dp/B00WLEKQS4/ref=as_li_ss_tl?ie=UTF8&linkCode=ll1&tag=battleforthew-20)
  
  
• [2 x DSTE NP-F970 Battery + Charger - $43.69] (https://www.amazon.com/NP-F970-MVC-CD1000-DCR-VX2100E-DSR-PD190P-NEX-FS700RH/dp/B00M3P9YAC/ref=as_li_ss_tl?ie=UTF8&linkCode=ll1&tag=battleforthew-20) (each battery will give you 47.4wh of power for a total of 94.8wh)
  
  
• [1/4" Male Threaded to 1/4" Male Threaded Double Male Screw Adapter - $1.79] (https://www.amazon.com/Male-Threaded-Double-Screw-Adapter/dp/B00MLX263I/ref=as_li_ss_tl?ie=UTF8&linkCode=ll1&tag=battleforthew-20) (connects the plate to your camera)
  
  If you can't get the Juicebox to work, you might want to trade it in for one of these inexpensive Sony to BMPCC setups. If you take a couple of charged NP-970s to the field, you can shoot all day without recharging.
  
  Hope this is helpful and good luck!

This. This is the easiest/cheapest way to go. This plate and take your pick of battery capacity from this brand, DSTE.

The NP-F 970s last about 3-4 hours depending on conditions and the much smaller NP-F 550s last over an hour, up to 2, again, depending on conditions.

I found using a cage for the BMPCC like this was helpful for attaching it. It’s definitely not a perfect solution but absolutely one of the cheapest. The biggest fault I’ve found would be that the Battery plate gets absolutely no feedback from the camera, so it constantly drains the battery until you physically unhook it from the plate, even when not charging/powering the camera.

I’ve also heard great things about this battery/power solution from a lot of guys who use the BMPCC and BMCC but haven’t used it myself. I can confirm that a 12v usb battery bank will also do the job, I use the same cord from my battery plate to connect it but you can order them separate simply by searching amazon for “BMPCC Cords”

I bought these https://www.amazon.com/gp/product/B00M3P9YAC/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 and I have been shooting the heck out of them for a few months. No issues yet, and I have not noticed them dying faster than any of my authentic sony batteries.

edit: They take like 8 hours to charge with that charger. Just wanted to include that