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Wednesday
Jul212010

Tour the Alexa

Gary Adcock's walkthrough of Arri's New Alexa Camera from gary adcock on Vimeo.

Thanks to Gary Adcock for putting this together and to Final Cut User for the original web publication.


Watch the vid -


Like I said in my last entry - they couldn't have made it more simple and intuitive. These cameras are going to be perfect for the stereo rig. But somebody already knows that..


Tuesday
Jul132010

Update 07/19/10 - Alexa & Technica 3D

I've been trying to re-focus the blog component of this site to be more research oriented so I'm somewhat loathe to do a "status update" type post but I've been totally out of the loop for a few weeks and wanted to share some stuff.

First off, I checked out the Alexa at Arri CSC's "Meet Alexa" event in Secaucus, NJ a few weeks ago. Getting out of bed at 7:30 to get to Jersey by 9AM on a Saturday morning was painful but totally worth it. It's such a simple system so there's really not much to say. It's a little smaller than a RED One, beautiful design and ergonomics, brilliant color viewfinder, etc. Despite what some camps are pointing out, the images we shot and examined at Arri seemed incredibly sharp and resolved. Almost too sharp. The latitude and sensitivity are simply amazing and the skin tones are beautiful right out of the gate.

That's the thing - this is a "digital film" camera in the sense that it's intended to produce a high quality, robust, and faithful image that will be taken into a Digital Intermediate suite for grading and finishing - just like celluloid. There is no painting this camera on-set other than doing some non-destructive LUT's in SpeedGrade or a similar application. In fact, just like selecting a traditional motion picture film stock where you can only choose a color balance (3200k, 5500k) and ISO/EI, Arri has tried to keep it familiar with the Alexa where you have only 4 ways of affecting the image in-camera - Sensitivity (ISO), White Balance (Kelvin), some basic Tint Control (Green/Magenta), and you can also switch between a Linear and Log Gamma curve depending on your workflow. Working within these parameters, shooting ArriRaw to a data recorder like a S.Two OB-1 will buy you the most visual information and is the most quality conscientious way to work with the camera. Because the Alexa also has the ability to record non-raw, raster video in the form of master quality ProRes 4444 files, I was hoping for some basic paintability in the event a producer wants to use them for their online. These files are very robust so I predict a lot of productions will opt for the ProRes workflow as it's faster and more cost effective. I totally understand why Arri didn't include Paint menus though. They really want you to think of this more like film than video.

Next up, I just returned from a week at Element Technica in L.A. getting trained on their stereoscopic rigs. This stuff is so f-n cool. Prior to this I had no hands-on experience with stereoscopic video and the first time you successfully align the cameras and see the 3D effect come to life on the monitor is a pretty sweet feeling. Right now, there simply aren't enough training options for 3D. There are a handful of courses being offered and most of them are very exclusive and/or expensive or focused on a specific product such as the upcoming Panasonic AG-3DA1 so if you want to really learn this stuff you have to be aggressive about it.

Here's the Quasar Rig built out in Under-Thru Beam Splitter Mode with 2x R1's.

3/4 View (note: The Inter-Ocular motors and control box aren't on nor are FIZ control for the lenses.)

Quasar in Side by Side for when greater Inter-Ocular is required.

Neutron Rig (for smaller camera heads like the SI-2K) in Over-Thru Beam Splitter Mode.

Neutron Rig in Side by Side Mode.


It was a great week and I really enjoyed getting to know all the people who were there doing the training. I already miss our long, beer soaked lunches at Father's Office. But as usual, what I always miss most about L.A. - Amoeba Music!

We used to have the Kim's Video Superstore here in NY and that paled in comparison to mighty Amoeba but now we don't even have that. Kim's has sadly been reduced to a tiny one room store in the East Village. Makes me sick..

Friday
Jul022010

The Plastic Bullet

This Red Giant App for the iPhone is a lot of fun. Hipstamatic is cool as well but I like that you can take your existing photos into Plastic Bullet and just see what happens to them. The random effects the app applies are often very beautiful and I have yet to see it produce the same results twice. I've got to say, in this day and age of immaculate digital images, I really love the crappy lens on the iPhone. It just has its own unique quality that I'll be sad to see go as the little camera phone inevitably becomes a real point and shoot. 

Here are a few of my favs:

 

On an iPhone related note, I'm not sure Key Light is entirely iPhone 4 compliant so that's on the to-do list. I'm moving this week and have family in town so signing off for awhile. Have a great holiday weekend. 

Friday
Jun252010

Canon Picture Styles and Chroma Du Monde

I was curious about the real differences on the video level between the various Canon HDSLR Picture Styles so I set up the DSC Labs RED CamBook Chroma Du Monde 28R and evenly lit it with ambient daylight.

Converting the camera's HDMI OUT to SDI, I set the exposure in the recommended way for the chart, putting the grayscale's crossing point at just under 60% on the waveform. I then made no exposure changes and just dialed through the various Canon Picture Styles capturing the waveform and vectorscope data from the Leader monitor.

Camera and Lens: Canon 5D Mark 2, Canon 24-105mm f/4 Zoom

All styles were adjusted to the following "standard practice" specs:

Contrast: all the way down
Sharpness: all the way down
Saturation: down 2 points

For Neutral and Faithful, the two "out of the box" Picture Styles that I find to be well suited for video, I looked at Saturation -1 as well to see how much difference 1 point makes on the scopes. The answer is a lot. Most people would agree that the colors on these cameras are over saturated and need to be backed off a bit to look more natural and less video. When adjusting a video camera's colorimetry using DSC charts, the theoretical goal is to ensure faithful color reproduction by aligning the primary colors into their targets. The color response that this creates however may not be suitable for all projects it may even look a bit over saturated compared to the low sat "film like" color matrices found in many prosumer camcorders.

Have a look:

Let's have a closer look at Faithful, Saturation -1

This is about as close as we can get to hitting our targets with the Canon 5D Mark 2. In my opinion this setting doesn't look as nice as Saturation -2 so as always, your eye is really your best tool for image evaluation.

Canon Picture Styles: Looking at these thumbnails alone, it's a little hard to tell the difference.

Waveforms: Glancing at these however you can see that there is a small difference in gamma response from Style to Style, Neutral being the most compressed in comparison.

Vectorscope: Even with the saturation turned down, Portrait and Landscape are very extreme color looks compared to the more muted tones of Neutral and Standard. Faithful on the other hand, does what it say it does and offers the most accurately aligned video colors of the bunch.

In order to really see the differences though, you need to look at the chart in the context of video. Here's a file for you, feel free to download it and take into FCP where you can open up the scopes and really scrutinize the differences between Picture Styles.

Note: RED CamBook has a highly reflective surface so must be angled back to avoid seeing yourself in it which is why the image is skewed in this video. . There is a small amount of gamma lift that happens in Vimeo upon conversion to their format. Why does it do that? I don't know and I'm still searching for a workaround.

Canon 5D Mark 2 Picture Styles and Chroma Du Monde from Ben Cain / Negative Spaces on Vimeo.

As for the Canon 7D and 1D Mark IV? From what I discovered from the tests Jem and I did at Sekonic, the color response from the various Picture Styles is very similar to the results found here.

Thursday
Jun242010

Mermaid Parade 2010

Just uploaded a bunch of shots from one of my favorite annual NYC summer events, The Coney Island Mermaid Parade. They've been saying that "this year will be the last" for the past 3 years and every year it just gets bigger and more out of control. Good times!

http://www.negativespaces.com/stills/coney-island-mermaid-parade-2010/

Shot with Canon 5D Mark 2 + Canon 24-105 f/4 Zoom