Shutterspeed

Lasse Bodoni · August 23rd, 2004, 03:39 PM

How do you tell if I was using higher shutterspeed than 50 (PAL)?

I just made some test and if the light is god than I can get a really god "filmlook" shallow focus with highering the shutterspedd from 50 to 300-600.

It is a Sony PD150 P, with a Centuryoptics 16:9 adapter, Shneider ND .9 and Circular Polarizer in a mattebox.

Jonathan Stanley · August 23rd, 2004, 04:30 PM

I'm not exactly sure what your question was but this is a common trick to use (I am currently using it extensively on a shoot I am doing). It gives a "frenetic" motion to the image which mimics what happens when you undercrank a film camera (1st twenty min of Saving Private Ryan).

Kin Kwan · August 23rd, 2004, 04:41 PM

You can tell if a video is shot at a high shutter speed by the lack of motion blur. A higher shutter speed captures more details in motion areas. This causes that "frenetic" motion that Mr. Stanley is talking about. Another word to describe it would be "strobby."

I might be wrong on this, but as far as I know, a higher shutter speed does not give you a shallower DOF. In order to obtain a high shutter speed, the iris is smaller than when it's at a lower shutter speed.

-KiN

Scott Anderson · August 23rd, 2004, 04:58 PM

Kin, It's just the opposite. By using a fast shutter, it allows you to open the iris up. Open iris = shallower depth of field. But ufortunately, the smaller size of the chips will never allow you the same silky DOF as on, say a 35mm camera. Even if you could open the iris all the way for every shot, you'd still have more depth of field for a particular field of view. I also find the strobing, stuttery look problematic not just for action scenes, but also for plain old dialogue. Even facial movement looks unnatural at 1/1000th shutter. The look has it's merits, though, and has been used to great effect in music videos, product shots and shots intended to be processed as slo-mo.

Kin Kwan · August 23rd, 2004, 05:28 PM

Hey Scott, thanks for the info. Now I'm kind of confused, so a faster shutter opens up the iris more? Dang...I got it all mixed up then :/

Well, thanks for clearing things up!

-KiN

Boyd Ostroff · August 23rd, 2004, 05:50 PM

To avoid the problems you describe with high shutter speeds, carry around a few different ND filters. They will let you open up the iris without increasing shutter speed.

"Strobby"? Hmm.... rhymes with "hobby" and "lobby"?... I think it should be "strobey" :-)

Lasse Bodoni · August 23rd, 2004, 10:16 PM

Jonathan Stanley

My question was if it is possible to se whvat I was using to shutt the "movie" Higher shutter speed or ND?

-----------------

What kind of ND do you use? I have the Shneider ND .9 and ND1, ND2 in the camcorder.

Ronald Lee · August 29th, 2004, 04:12 AM

actually, you'd want a slower shutter speed, say 1/30th to GET MOTION BLUR, which looks more like film and less like video.

Lasse Bodoni · August 29th, 2004, 05:51 AM

I'm using a PD150 P and it hasn't got the frame mode. Higher shutterspeed gives me a greater shollow dof.

I guess I gonna stick with a Canon XL2 or DVX100+anam. lens.

August 23rd, 2004, 03:39 PM	#1
Lasse Bodoni Regular Crew Join Date: Aug 2004 Posts: 39	Shutterspeed - film look How do you tell if I was using higher shutterspeed than 50 (PAL)? I just made some test and if the light is god than I can get a really god "filmlook" shallow focus with highering the shutterspedd from 50 to 300-600. It is a Sony PD150 P, with a Centuryoptics 16:9 adapter, Shneider ND .9 and Circular Polarizer in a mattebox.

August 23rd, 2004, 04:41 PM	#3
Kin Kwan Regular Crew Join Date: Jul 2004 Location: Plano, TX Posts: 120	You can tell if a video is shot at a high shutter speed by the lack of motion blur. A higher shutter speed captures more details in motion areas. This causes that "frenetic" motion that Mr. Stanley is talking about. Another word to describe it would be "strobby." I might be wrong on this, but as far as I know, a higher shutter speed does not give you a shallower DOF. In order to obtain a high shutter speed, the iris is smaller than when it's at a lower shutter speed. -KiN __________________ Kin Kwan

August 23rd, 2004, 05:28 PM	#5
Kin Kwan Regular Crew Join Date: Jul 2004 Location: Plano, TX Posts: 120	Hey Scott, thanks for the info. Now I'm kind of confused, so a faster shutter opens up the iris more? Dang...I got it all mixed up then :/ Well, thanks for clearing things up! -KiN __________________ Kin Kwan

August 23rd, 2004, 04:30 PM	#2
Jonathan Stanley Regular Crew Join Date: Jul 2003 Location: Boone, NC Posts: 115	I'm not exactly sure what your question was but this is a common trick to use (I am currently using it extensively on a shoot I am doing). It gives a "frenetic" motion to the image which mimics what happens when you undercrank a film camera (1st twenty min of Saving Private Ryan).

August 23rd, 2004, 04:58 PM	#4
Scott Anderson Major Player Join Date: May 2003 Location: Phoenix, AZ Posts: 327	Kin, It's just the opposite. By using a fast shutter, it allows you to open the iris up. Open iris = shallower depth of field. But ufortunately, the smaller size of the chips will never allow you the same silky DOF as on, say a 35mm camera. Even if you could open the iris all the way for every shot, you'd still have more depth of field for a particular field of view. I also find the strobing, stuttery look problematic not just for action scenes, but also for plain old dialogue. Even facial movement looks unnatural at 1/1000th shutter. The look has it's merits, though, and has been used to great effect in music videos, product shots and shots intended to be processed as slo-mo.

August 23rd, 2004, 05:50 PM	#6
Boyd Ostroff Wrangler Join Date: Dec 2002 Location: Mays Landing, NJ Posts: 11,802	To avoid the problems you describe with high shutter speeds, carry around a few different ND filters. They will let you open up the iris without increasing shutter speed. "Strobby"? Hmm.... rhymes with "hobby" and "lobby"?... I think it should be "strobey" :-)

August 23rd, 2004, 10:16 PM	#7
Lasse Bodoni Regular Crew Join Date: Aug 2004 Posts: 39	Jonathan Stanley My question was if it is possible to se whvat I was using to shutt the "movie" Higher shutter speed or ND? ----------------- What kind of ND do you use? I have the Shneider ND .9 and ND1, ND2 in the camcorder.

August 29th, 2004, 04:12 AM	#8
Ronald Lee Major Player Join Date: Jan 2004 Location: Vancouver, Canada Posts: 435	actually, you'd want a slower shutter speed, say 1/30th to GET MOTION BLUR, which looks more like film and less like video.

August 29th, 2004, 05:51 AM	#9
Lasse Bodoni Regular Crew Join Date: Aug 2004 Posts: 39	I'm using a PD150 P and it hasn't got the frame mode. Higher shutterspeed gives me a greater shollow dof. I guess I gonna stick with a Canon XL2 or DVX100+anam. lens.