long exposure shots with HVX200

[john1192]

hi,

i have been trying to figure out how to get those beautiful long exposure shots of cars on a winding road ... there is a pic in one of the brochures for the HVX ... but i cannot figure it out ...

anyone ???

thank you

john

john.hartmann@comcast.net

[MarcusX]

I believe you can do that in post. Set the camera to 24 fps, 1/24 shutter or 30 fps 1/30 shutter and layer a couple of frames on top of each other with some opacity.

[d-mac]

do you mean using a slow shutter speed? could you put a link to the brochure you're talking about (if you can find it online).

the slowest shutter speed is only available in VIDEO CAM mode. Change the operation type setting to VIDEO CAM mode, and make sure you're filming in 720 60P or 30P. then change the shutter to 1/15.

I THINK this is what you mean.....

[Justyn]

yes, I did that too... ya can get some trails and some pretty cool flashes of lights in the videocam settings at 1/15th... would be great if it went down further too....

Maybe a filter on the front would help as well... ? Star filter or something like that?

[john1192]

it is a printed brochure .. i will get it from a friend that has it and scan it so you can see ... doug leighton from panasonic said that you use 12 or 18 frames and a synchro scan setting of 360d but unless i am missing something like you have to play it back at a different speed in post it only gets a few trails .. all my film DP buds say that you need the shutter to be open for a minimum of 2 or 3 seconds not a few frames ... makes sense as my still camera can be open for 30 seconds or more ... lets keep this open so we can find the solution .. would be cool to add this in to a music video i am working on ..

thank you for the replies

john

[Film Division]

I am looking forward to this brochure.

Thanks

[4mat]

Ah the holy grail of dv film making, the long shutter effect.
In theory it should be very easy to code a plugin filter that burns the light in over a given time sequence but alas nobodys been that clever yet dam it !
-matt

[Rhydon]

I think your looking for this effect. Its a grab from some of the varicam footage im working with.

One of my good friends owns a varicam (BluePlanetProductions.ca). He does a lot of off-speed effects, i found this to be a perfect exaple of what this thread is talking about.

However, this precise effect is not possible with the HVX as the framerate needed to make these shutter effects must be lower than 12 (more like 1-8- which was what i was hoping for when panasonic announced variable frame rates with the hvx). I thought Panasonic might do away with some of the meaningless framerates (22, 20, etc) and work on getting some nice low ones for the next camera release.


http://homepage.mac.com/rhydon/.Pictures/Varicam/5FPS.jpg

[Stevet]

Dang, that varicam shoots one heck of an image!

[hcBeck]

But what about all that noise?!

[Rhydon]

Lmao

[SPZ]

Well. the DVX100a at 12 shutter does a good slow shutter effect. You just need to speed up the footage, and should look fine.

[dvInsight]

There are two brochures to my knowledge. One is the corporate brochure done in Japan that is 8.5" X 11" with the camera on a black background. The other is a smaller more friendly US version with a man holding the camera on the cover. About 3 pages in, there is a series of five photos stacked top to bottom on the right side. The second picture down shows the ribbon of light created when shooting cars on a freeway over several seconds. They faked it. The caption below the series of photos says"

"Overcrank or undercreank with the HVX200 to create amazing fast of slow motion effects."

i think they were trying to best illustrate that caption, but the photos presented really show the benefits of really slow shutter speeds as opposed to frame rate effects.

I think this was more of an art director trying to express the idea motion instead of an engineer trying to show what you can really do with the camera.

It would have been more accurate to show multiple frames of the sun setting quickly, or of multiple clips of the tennis player swiping at the ball. More accurate, but boring from an art directors perspective.

I could scan and post it if I could borrow an HVX for the weekend in the OC. Any one?

Ok, like that is going to happen. Just ask and I will scan it.

[OliverM]

But what about all that noise?!

Nevermind the noise... What's up with the white and bright red smearing?

[lpcvideo1]

But what about all that noise?!

Click me! (http://www.everwonder.com/david/grinch/sounds/noise.wav)