Disable AGC and Monitor Audio on Your Canon T2i

For the past few weeks, I've been using the Sescom AGC Disabling Y Splitter Cable and a MP3 player to defeat the Automatic Gain Control on my Canon T2i. If your not familiar with how this works, check out Dave Dugdale's blog. He does a great job explaining the process and even provides a free MP3 download to put on your music player of choice.

While this method has been effective at reducing the noise caused by the AGC, it has also reduced the overall recording volume of the camera, which is a problem when working with soft spoken talent. When I ran into this problem, I was at a bit of a loss for a way to fix it. I emailed Deejay of DSLRfilmnoob.com, and after much thought, he suggested using a headphone amplifier to boost the volume of the mic heading into the camera, kind of like a preamp. What a genius idea!

I did some searching on the interwebs, and found many different types of headphone amps, at many different prices. The Boostaroo Headphone Amp was on the cheaper side, could be found at any Radio Shack, and would output amplified audio to 3 devices. Since it had 3 output jacks, I could send one into the camera, and plug a headset into another. Below is an example of how I attached the headphone amplifier to my camera. The Kodak Zi8 stood in for my T2i since I was using it to take the photo.

To explain: the Rode Video Mic is connected to one end of a 1/8 female to 1/8 female coupler. The input of the Boostaroo Headphone Amp is plugged into the other end of the coupler. In the first output of the Boostaroo is a 1/8 male to 1/8 male audio cable which connects to the mic input of the Sescom Cable. My MP3 player is plugged into the AGC Disable end of the Sescom Cable, and this is all connected to the External Mic jack on my "T2i".

It's not shown in the above image, but you can add a pair of headphones to the Boostaroo and monitor the audio before it reaches the camera. It should be noted that the ideal place to monitor audio is when it's been passed through the camera, however, because of the constant tone played by the MP3 player to disable the AGC, you would only hear noise in your headset. If however you have a DSLR with manual audio controls, and an external monitor, check out Deejay's headphone hack.

While the Boostaroo did increase the gain of the microphone in my tests, it only increased it by 10-15db which didn't make a significant difference. The Boostaroo also lacks any type of volume control, it's either on or off, and when it's off, it decreases the recording volume and introduces a lot of noise. Finally, the Boostaroo ended up being much larger and heavier then I anticipated.

Although I will be returning the Boostaroo, it did prove proof of concept, so in it's place I have ordered the Micca Fiio e5. This unit is much smaller and lighter, has volume control, is rechargeable, has a much higher output power then the Boostaroo, is cheaper then the Boostaroo, and can often be purchased with a Y splitter like the package I linked to above. With the Y splitter you can add your headset and still be able to monitor the audio.

When the Micca Fiio e5 shows up I'll put together a video showing how I set it all up, and I'll include some tests.

More Time Lapse Tests

Happy Belated Holidays, and I hope the New Year is off to a good start for everyone. It's been a while since my last post, but I've had a lot of little projects in the works, and now they will start trickling in to the blog.

Today I want to continue discussing time lapse photography. To be honest, I'm still a bit mystified by time lapse, and based on some of the experts at Timescapes.org, it's no wonder. Although there is a lot which can be learned about shooting time lapse, getting that beautiful sequence relies, in large on luck. The members of the Timescapes.org forum have some great information up, but I've decided to continue shooting more tests with my T2I.

I've been comparing the different automatic modes on the camera, to figure out their best applications. Below is a video comparing the Av mode with the Tv mode. Neither of these clips have any color correction or de-blinking applied, they are straight out of the camera.

Av Mode: So Av mode is the cameras aperture priority mode. You set the desired aperture, and the camera automatically adjusts all other settings like shutter speed. The down side to using Av mode is it can make for an inconsistent time lapse. Look at the first clip, there are some sections where the lights on the cars are nice and streaked (there was less light in the shot so a lower shutter speed was used) and some shots where you can make out distinct details on the cars (there was a lot of light in the shot, so a faster shutter speed was used). The advantage to Av mode is it's ability to define your depth of field. If you were to shoot a time lapse of the sky, this is less of an issue since your lens will be focused to infinity, but if you have objects in the foreground and background, you will want to lock your aperture, otherwise you will see the focus change from shot to shot.

Tv Mode: Tv mode allows you to set the shutter speed, and automatically adjust the other elements, such as aperture to properly expose each shot. The plus to Tv mode is it allows you to have consist ant motion capture from shot to shot. Look at the second clip, the cars passing by the church all have that beautiful streaked look, except for the ones which got stuck at the light. Tv mode in my mind captures the essence of time lapse by allowing you to control how motion will be perceived in your final video. The down side to Tv mode is the automatic changing of aperture. If your lens isn't set to infinite, you will see the focus and depth of field shift between shots, which is really annoying. However, I've had no complaints shooting extremely wide shots, or sky shots in Tv mode.

Comparison and Other Thoughts: In comparing the two different modes in the above video, the blinking seems much more apparent in when using Av Mode. Although it's possible that nights conditions contributed to the blinking, the two streets had similar lighting and traffic flow. Although you can still notice the blinking in the street lights in the Tv mode clip, it's much more subtle.
Tv mode has become one of my favorite auto settings when shooting at an infinite focus point. Av mode would be useful if I were keeping one particular object in focus through out a time lapse, but I'm just not crazy about the change in motion captures. I find it distracting to see images go from streaky to clearly defined. However, which mode you use will depend on the effect your looking for and the circumstances under which your shooting.

PBS' Circus Documentary

About two years ago, I picked up a part time gig working as a Logger for Show Of Force; a small production company who exceled in making award winning documentaries. The project I was working on has now been release. Circus follows the life of the performers and crew of the Big Apple Circus for a season as they tour the East Coast.

I realize this post is a little late, as the show primered on November 3rd, but have no fear, you can catch up on what you missed by checking out video clips of Circus on PBS' website. The next episode is on November 10th (tomorrow) and I'm really excited to see what this episode has in store.

Working as a logger can be a little boring, especially on a documentary. There are literally thousands of hours of footage which need to be viewed, broken up, and carefully labeled in order for the editors to be able to find footage easily. Some of the footage is great, but some is repetative. I can't even remember how many times I've seen the Big Top tent being put together. However, there are some good things about logging.
1.) you get to see all of the behind the scenes footage which may not even make it to the special features section on a DVD.
2.) you get to try and figure out which story the final show will follow.
and the Bonus benefit:
3.) You know the back story behind what's happening in the show, and you can share it with your friends and family. It's a dorky bonus, but it's fun.

DIY Shoulder Rig For $80 and Hoodman Loupe Modification Tutorial

Recently, IndieBudgetMovie left a very nice comment on my youtube video illustrating how to modify a Hoodman Loupe using a Delkin Pop-Up Shade so it can be attached directly to the LCD on your DSLR. If you haven't seen my Hoodman Modification Tutorial, and aren't happy with your LCD view finder and how it attaches, check out the tutorial above.

In any case, it turns out IndiBudgetMovie is a master of DIY as well, and put together this awesome video showing off an adjustable shoulder rig he made for $80 using a drywall square. What's great about this build is that it can easily be adjusted to fit many different types of shooters and styles. I've seen a lot of shoulder stabilizers built from PVC, which works well, unfortunately, once all the parts are connected, it can't be easily adjusted. This rig looks very solid, and not to difficult to build.

Combined with the Modified Hoodman Loupe, this will look like a pretty professional rig, and will be very functional. IndieBudgetMovie says he's going to try out my modification, so maybe he'll put together a follow up video. I'd be excited to see someone else using the modded Hoodman Loupe.

To date, this makes two people I know of who have used my tutorial to ditch the rubberbands, and secure their view finders in a better way.

I'm glad to see other people benefitting from it. After all, that's why I made the video in the first place.

Figuring Out Time Lapse Photography

Inspired by Philip Bloom, and many other renowned DSLR cinematographers, I decided to purchase and intervalometer, and give Time Lapse photography a shot. Using the affordable and simple to use, Aputure Intervalometer, I've run a few time lapses to try and figure out the best camera settings. Here are the results so far.

This first time lapse was recorded looking out over the Hudson River from Northern New Jersey. I used my Canon Rebel T2i, set to AV mode (Aperture Priority) with the intervalometer set to capture a 2 second exposure every 1 second. Because it was simply a test, and I am impatient, I only left the camera running for about 30 minutes. You can see me jumping through the frame checking the camera, as I wasn't really sure what I was doing. For a first time lapse, it didn't come out too bad. You'll have to excuse the quality, as I just uploaded the Quick Time videos for the sake of this blog posting. Once I get the hang of it, I'll post a proper video.

This Time Lapse was recorded from my window in Greenwhich Village. Again, I set the T2i to AV mode, and the Intervalometer to take a 2 second exposure every 1 second. However, because it was a night time shot, the camera automatically changed the exposure speed to compensate, so in reality, it was closer to a 4 or 5 second exposure per picture. The flickering green light is the faulty street light outside my window, and not an effect of the time lapse. Neither of the above videos were color corrected or edited in any way.

I definitely need some more practice, but here are my thoughts so far.

1. Knowing your math is important. How long you leave the camera snapping photos will depend on how long you want the final time lapse to be. Here's a quick example. If you want a 10 second time lapse, at 24 frames per second you will need to take 240 pictures. If the exposure of each picture is 2 seconds, you will need to wait 480 seconds, or 8 minutes. Doing the math will help you use your time more effectively.
2. Different exposure times give different effects. Short exposure times seem to give a more choppy look to the footage, where as longer exposures give a smoother dream like look. Then again, this will also vary based on what your shooting. If an object is moving quickly, a fast exposure may be the only way to capture it.
3. AV mode has it's ups and downs. Currently, AV mode is the best way to control photo exposure on the Canon DSLRs. It's only draw back would seem to be that it will automatically change your exposure time, despite what you set your intervalometer to. This means calculations discussed above may be useless as exposure times may change mid shoot. That being said, AV mode readjusting shutter speeds will most likely save a time lapse from being ruined by an overly dark, or overly light photo in the sequence.
4. Practice and Patience are key. Philip Bloom makes time lapses look easy, but in reality, there seems to be a lot of luck in making them look good. With enough patience and practice, you should begin to understand how to get consistently good shoots, but because lighting conditions are always subject to change over time, it's a bit of a coin toss.

As I get more comfortable shooting time lapse, I'll post some tips and guides I find useful. However, at this point, I'm still figuring things out.

How to Run a Dual System Film Shoot

I was recently asked to edit footage filmed using a dual system setup (video and audio recorded to two seperate devices). Recording audio seperately from video is one of the best ways to increase production value, but only if it is done properly. Based on the material I was asked to edit, I realized some people may know what is needed for dual system recording, but don't know what steps to take for their efforts to be effective. With that in mind, here is a quick guide on how to run a dual system shoot. Getting the best quality is a discussion best left for another post, this is simply a Dual System Recording for Dummies Guide if you will.

The most important thing to remember when using dual systems is that you need to record a visual AND audio cue in order to sync audio and video in post production. We've all seen behind the scenes footage were a crew member calls out the scene and take number, and proceeds to slam the gate on the clapper. This way the editor has visual data to connect to audio data. In the footage I was given, a clapper was clearly labeled, and used properly, only no one on set called out the scene or take number, meaning the audio files have no discernable information. They only have a clap, and the line reading, making it nearly impossible to match them to the video.

Another key step is making sure your camera and audio recorders, are recording audio at the same bit rates. If your camera records audio at 44.1bits, and your audio recorder records at 48bits, you will get what is called drifting in post production. Drifting is when your audio and video are in sync at the beginning of a take and drift out of sync by the end of it. this is because your audio and video are playing back at two different rates. The numbers above were just examples, as these numbers will vary based on the equipment your using. For more information, refer to the owners manual for your gear.

These are essential steps to follow. If they are ignored, you could have the best quality audio and video imaginable, but they will be nearly useless, as syncing them up in post production will be near impossible.

Filming Tempt'd at Fashion's Night Out 2010

Here is the video I filmed and edited for www.Temptd.com, a New York based fashion blog. This was shot using a Canon T2i, a Sigma 18-50mm f2.8-5.6 lens, a Z-96 LED light and a Rode Videomic. Post Production was done in Final Cut Pro. The titles and lower thirds graphics will vary between my version of the video (above) and the one that appears on Temptd.com as the graphics were changed to match the esthetics of their previous videos.

To celebrate their 1 year birthday, Temptd.com's Founder and Editor-In-Chief, Roselyn made her way through Fashion's Night Out in New York. During the night, Roselyn updated her Twitter and Facebook with clues to her location. Readers who followed the clues and found her, were rewarded with an array of prizes.

The night was perfect for filming, and the locations were less then dull, buzzing with fashionistas, ranging from laughable fashion duds, to the world renowned fashion gods. As the cinematographer, it was difficult to get steady shots due to excited patrons scrambling for swag and free cocktails, but on the upside, there wasn't a boring place to point the camera the whole night.

As a life long student, I look to learn from every project I work on, and Fashion's Night Out is no exception. Here are some thoughts on the evening's shoot.

1.) The HDV- Z96 LED Camera Light is an indispensable piece of equipment. A huge thanks to Emm at Cheesycam for discovering this powerful production tool. Without this light, it would have been nearly impossible to capture noise-free footage given the lighting conditions in the various locations we filmed in. Furthermore, using a camera light instantly bumps up production value. If used properly, it gives a polished, pro look to footage that otherwise would look like it was shot on a camera phone. Being able to dim the light allows you to use it both indoors and out, and I even used it in place of a flash.

2.) The Rode Videomic captured audio in noisy environments extremely well. In fact, the mic is so sensitive I had to knock down the sensitivity by 10db to keep it from clipping the audio. From about 7 feet away, on a busy NYC street, I figured the camera's AGC would keep the audio from over modulating. NOPE! This mic is a blessing for DSLR filmmakers, and the high pass filter works very nicely.

3.) Less is more. With the venues being jammed with patrons, it's difficult enough to walk around without a gear bag, so you can imagine what it's like carrying the bag, and trying to operate the camera. I brought my full gear bag as I wasn't sure what the night would call for. However, I only used the 18-50mm lens, the mic, and the video light. Although I would have liked to use other lenses, the locations were too crowded, and the shoot to fast-pace to swap out glass. That being said, the Sigma lens performed very well, and I'm considering getting their 18-200mm lens for future events. The larger focal range would come in handy.

4.) Producers make life easier. When on a shoot, the talent and the cinematographer (me) are usually too focused on other things to make decisions about what needs to be shot to effectively tell the story. That's where a producer comes in. They help keep the production moving forward, and in many situations make sure enough of the right stuff is filmed to tell the desired story. We did just fine without a producer, but having one, would have made the night easier for Roselyn and I, as we wouldn't have had to keep "changing hats" throughout the night.

5.) Shuttering down the lens would have been a good idea. Although I love the look of Bokeh and a shallow depth of field, it is very difficult to keep focus while moving through a crowd at faster f-stops. It's hard to stop down the lens due to on sight lighting, but the Z-96 light provides ample light in most situations.

6.) I love my camera. The Canon T2i continues to serve me well. It performs wonderfully in low light, and makes some beautiful pieces of film. Sure, I'd like a 5D mark II, but I wouldn't trade the T2i for anything. It's small, light weight, and for the price, you can't find anything better at the moment.

After only a year, Tempt'd has a loyal fan base , but is hoping the incorporation of video with their written posts will invite in even more of an audience. We've yet to schedule our next shoot, but you can expect to see more videos like this in the future.