Browsing: Articles & Reviews

JVC Pro HD

The HM650 really is a very clever camera, packed full of features that make it a great choice for news shooters. It has multiple codec and recording options, great for when you need to pool or share media. It has WiFi and 3G/4G connectivity via a USB host port where you can add wireless dongle. Brilliant for uploading material via ftp or (via a future firmware update) streaming your footage live. It has a 23x zoom lens, so it offers both a wide angle field of view for press conferences, color shots and GV’s as well as a long telephoto range for capturing those distant stories behind the police lines or security barriers.

Articles & Reviews D7w, front view.

Ikan’s D7w is a 7” field monitor with SDI and HDMI inputs, 1080p compatibility, and a variety of useful display modes: false color, clipping guide, pixel-for-pixel mode, focus peaking, waveform monitor (WFM), RGB parade, vectorscope, and more. At a mere $1300, it looks like an incredible bargain. Is it? I took the plunge; here‘s what I found. Ikan showed an interesting lineup of affordable, good-looking monitors at NAB 2013. At Cine Gear Expo LA 2013 in early June, they were offering several of those monitors at show-special prices. I took a punt on a D7w, which had been enticing me since NAB: I’m in need of a decent set of engineering ‘scopes for HD work, and the D7w looked like a great way to get ‘em on the cheap.

Post Production

When Rubber Monkey Software of New Zealand asked me to review their filmConvert software, it occurred to me that this was an opportunity to ask some deeper questions about film stock emulation products that never seem to get asked: not just “how,” but “why?” Rubber Monkey software is based in New Zealand. Lance Lones, one of their principals who has a strong background in visual effects as well as color technology, took a lot of time to answer my emailed questions in great detail, for which I am truly thankful. My questions are in bold, followed by Lance’s responses.

Optical Science

One of the dirty little secrets of the film industry is that, historically, no one has made a truly neutral ND filter. In theory ND filters cut all visible light equally, but the sad reality is that they all shift color a bit. Some go a bit cool, some turn magenta… they all tend to shift in one direction or another depending on the brand. A company by the name of Mitomo claims to have made a perfectly neutral ND filter that also cuts IR on every camera made. This is a spectacular claim and I was naturally skeptical when I first heard of this product. There’s only way to find out if this is true, so read on…

Narrative Theory

Creativity is a tremendously hard thing to quantify, and yet producers and directors want to know what they’re getting before they buy it. They want to see that a DP can do one or two things really well, and then they feel confident that a DP they haven’t worked with before can definitely deliver. That’s why tabletop DPs get stuck doing lots of tabletop, or visual effects DPs shoot lots of green screen and background plates: they can show that they do that really well, so that’s what they’ll be hired to do.

Lighting

Firelight and window light have a lot in common. They both require multiple light sources to look convincing. Here are my favorite tricks for reproducing both. I first learned the “strips of multicolored gels waved in front of a light” firelight trick in film school, and I never found it very convincing. I don’t get a lot of opportunities to use flame bars, and I know there are ways to emulate firelight using multiple china balls with different gels on them. My favorite technique came about by simply staring into a fireplace for a while.

Lighting

There’s one place in every set that’s never going to be seen, and that’s directly behind the camera. Light from this direction is generally considered uninteresting but if you have a nuanced eye you can create some really interesting looks by putting a light in the one spot that every film school teaches students to avoid.

Lighting direction is important, but so is the size of the source. A small non-diffused light placed directly behind the camera is generally doesn’t work well because it makes people and things look obviously lit. There are situations where this kind of lighting does work–we see it all the time in older movies when a female star has to look her best–but for modern work it feels a bit forced.

Optical Science

Focus is a huge issue in anamorphic, and everyone on the camera crew has to wrap their heads around which focal length lens does what. For example, in spherical cinematography a 50mm lens delivers a “normal” perspective, but in anamorphic the closest to this is the 80mm. The reason for this is that each anamorphic lens is really two lenses in one: it’s 80mm tall but 40mm wide, for a 2:1 squeeze. A spherical 40mm lens isn’t all that long and focus isn’t that big a deal in the horizontal axis, but the addition of an 80mm lens to the vertical axis cuts depth of field in half. A 40mm spherical lens has reasonable depth of field, but add an 80mm lens into that mix and suddenly you have to pay a LOT of attention just to make sure medium shots are in focus.

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