180 deg Shutter?

[Bassman2003]

Hello I just made the mode to HD cameras and have an HPX-500 and an HMC-150.

Having never shot 24p, I am trying to learn about this new world.

The 500 has a setting called 180 deg shutter, and the 24p material looks a lot smoother to me using this.

Does the HMC-150 have this? I don't see it listed.

More importantly, does it need it for a less "stuttery" look?

Thanks for your input!

[johnnyha]

Well there is a 1/50 shutter ("OFF") that is supposed to be the "best setting" for the camera. And there is a 1/48.0 syncro scan setting (that is adjustable in .1 increments to match TV screens, flourescent lights, etc.). It SEEMS like the 1/48.0 setting in 24p would simulate 180 degree shutter or am i way off here, because I have been wondering this too.

[BobDiaz]

When shooting 24p, the problem is that the frame rate is very low, thus if one uses a fast shutter, like 1/500 of a second, you get a strobe like effect due to the low frame rate.

IF one could set the shutter for 1/24 of a second, any movement will blur, but the blue hides the judder or strobe like effect caused the low frame rate. The catch is the blurring is very bad with such a long shutter speed. So, we solve one problem and generate another problem.

The mid point is to set the shutter at 180 degrees (1/48) of a second. In this setting, we get some blur, but not an excessive amount of blur. Some will say use 1/50 of a second, that's 172.8 degrees, so it's close to what many consider ideal.

With the HMC-150 you are not limited to just a few shutter settings, you can set the camera for 1/50, 1/48, or some other setting.

IMHO, I would select 1/48 of a second for 24p, but it never hurts to try different settings and see what works best for you.


Bob Diaz

[johnnyha]

Thank you Bob!

[Bassman2003]

Thanks.

Having never used 24p, I am afraid to shoot a gig as I don't know if I will like the motion.

I know most everything produced for dramatic television is shot on film at 24fps, but when I shoot this format and play it in my editor the motion does not look like the broadcast material.

Is it it due to the 60i transmission?

It only seems useful in a non-camera movement situation...

[mcsmooth]

Most dramas are shot 24p, but most "live" material like sports, news, reality shows are done in 60. Be sure to practice on your own with 24p before doing a gig, you need to be sure your movements are smooth enough that they do not cause strobing. This is less of a worry on a tripod, and I would imagine the shoulder mounted 500 would also be easier to keep steady. If you search this board, there are many threads related to the issue that will help.

[Bassman2003]

Thanks.

I have some research ahead of me.

[Bucknfl]

Don't be scared. I shoot 24p almost exclusively. I love the panasonic 24p film look. Slow camera moves and quick whip moves work well. The strobing doesn't bother me and most people will never notice it. The people that seem to object to it the most are the hard core video guys. About the only time I use 30p is if it's for an effects shot or a video look is called for by the client.