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Tuesday, June 10, 2008

Just Another Day…

...when a lake disappears.

It started out as just another day.  I was at my desk, fixing some broken links on a DVD I’m authoring.  Then, the phone rang.

The voice on the other end was one of our reporters, asking if I was available to do a shoot that afternoon sometime.  Really, I wasn’t - it’s been pretty busy lately. 

“Haven’t you heard about Lake Delton?”

(For the non-cheeseheads in the audience, Lake Delton is a man-made lake of about 260 acres in the middle of Wisconsin Dells, the summer family waterpark capitol of the Milky Way, if not the entire Universe.  It is also about 40 miles north of Madison.)

“Ummm, no...”

“It burst its banks!  It is draining out!”

All this is true.  You may have noticed that we in the upper Midwest have gotten prodigious, almost Biblical, amounts of rain in the last few weeks.  And Lake Delton had apparently had enough, but instead of taking out the dam that created the lake in the first place, it pushed through a plug of land about 300 feet wide by 500 feet long, ripping out a road, sewers, electric lines and 5 houses.  Luckily, no fatalities.  Here’s a link to a Chicago Tribune article. But anyway, back to the phone…

“I don’t know when, but we might get to hitch a ride with the Army Reserve to get some aerials...”

Oooh, the magic word.  I love flying.  I love shooting while flying.  And while I want to do a good job, sadly we at Wisconsin Public TV do not own a gyro-stabilized lens, and until you have shot aerials without one, you have no idea how jumpy that helicopter really is.  But I’m getting ahead of myself…

I figured that without a hard leave time, I could run out for lunch real quick.  Bad move.  I had no sooner paid for my burrito at Chipotle before my cell phone started vibrating.

“We gotta be at the airport in 30 minutes!”

I had the burrito for dinner, about 7 hours later. 

I ran back to the station, jumped in the truck, and we made it to the airport in about 35 minutes.  Of course, then we waited for about another hour. Once all the formalities were out of the way, we went out to the tarmac, where an Army National Guard Blackhawk was warming up.  As much as I love flying and shooting, I had some trepidation about this, since the last military helicopter I had worked in was a Vietnam-era Huey, which was about as stable a platform as an out-of-balance washing machine on high-speed spin.  (And that time I actually had enough forewarning to rent a gyro lens!) But once I was strapped in and we were off, I was pleasantly surprised; the Blackhawk is a much smoother ride than the Huey.

Not that it mattered.  But again, I’m getting ahead of myself…

We took off to the northwest, flying over Dane and Columbia counties, where water pooled in farmers fields like little oceans.  In about 10 minutes we were in the Dells, and I had one of those really unsettling feelings of not realizing what I was seeing.  Where there had been a mid-sized manmade lake, there was little more than brown mud.  The breach in the land was much bigger than I had anticipated, and even at 1000’ altitude was plain to see.  Several houses sat half-demolished - the sides towards the water had just disappeared and floated away down the Wisconsin River.

We orbited the scene about a half-dozen times, at varying altitudes.  I thought I had held the image pretty steady.  Jeez, was I wrong.

I was shooting with a Sony HDCam. That kind of footage doesn’t play in my decidedly HDV-level office, so today I got to see standard-def DVD down-rez copies.  Jumpier than a box of bunnies on meth.

Disappointed?  You bet.  Could I have done better?  Not really, not in the situation I was handed.  There’s a reason big-market TV stations lease helicopters with nose-mount gyrostabilized cameras - you get what you pay for.  Many are the times I’ve wished for that kind of hardware to use, but it just isn’t in the cards for public TV, especially on short notice.  So in this case, I have decided to grade on a curve.  I’ll do what I can to do better next time, although honestly, I’m not sure what that might be.  And the producer was thrilled to have the footage at all, so I guess that was a win.  (Hot tip:  With footage like this, slo-mo is your best friend.)

Sometimes, the best you can do is just that - the best you can do.

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Sounds like the ultimate acid test for built-in image stabilization in consumer or pro-sumer cameras…

Posted by Chris Meyer  on  06/10  at  08:38 PM


Hey Bruce, can you post any of the footage?

Posted by  on  06/10  at  09:32 PM


I’ve stabilized helo footage in post before with a $50 Mac program. I think it’s called iStablize. Since you’re shooting HD, you can frame a bit wider than normal and then, when you stabilize it in post you loose some of the edges. After that you down-rez to NTSC/broadcast size.

Just a thought.

Rob:-]

Posted by Rob  on  06/11  at  09:04 AM


Good point. I’ve long advocated shooting HD if you could even if the known destination is SD, so you could pan, scan, zoom, and crop the source is post as needed or desired.

The problem with stabilization is that even if you have a stable shot, the motion blur induced by the camera movement will still be in the frame. If you know you’re going to be in this situation, you could compensate with a faster shutter speed to reduce the amount of motion blur present in the source frames. Not good for filmic story telling, but just fine for news.

Posted by Chris Meyer  on  06/11  at  09:19 AM


CNN ran an article on this:

http://www.cnn.com/2008/US/weather/06/11/lake.delton/index.html

Posted by Chris Meyer  on  06/11  at  02:18 PM


Bruce
When I was working with Newtek in Topeka (yes, Topeka), a few times I had the opportunity to shoot some footage from a two-seater helicopter piloted by Tim Jenison. The doors were removed and the only way I could shoot was to place the Sony Beta SP camera on my lap and keep the shots wide. The footage was steady enough to use for some show reels, but I was limited to shooting out the door. Despite the hairy way Tim flew the chopper on its side and only a waist-seatbelt holding me and just my hands holding the camera, it made me appreciate cameramen shooting for a living from high altitudes. Thanks for interesting article.

Posted by  on  06/12  at  01:36 PM


Great story, Bruce. I’ve had surprisingly steady results shooting out the side of a Eurocopter Squirrel with a handheld (!) VX1000; the optical steadyshot took out all the rotor chop from full wide to 2/3 tele, and most of it to full tele. P’raps you could trade in that HDCAM for an optically stabilized HVR-S270 for shoulder work and an HVR-Z7 for handheld? [grin]

Posted by Adam Wilt  on  06/13  at  04:05 PM


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