Going to Africa with HD100U, 50hz question

Jack Walker · June 27th, 2007, 04:07 PM

I also wanted to check, if I am using only tungsten lights in Europe, can I shoot at 1/60? instead of 1/100 (or 1/50)?

Daniel Weber · July 1st, 2007, 02:52 PM

Jack,

You should be fine, I would always check the image on a field monitor if available. I have shot stuff that looked fine on the LCD and then when you go to post the strobe effect is there.

Good Luck,

Dan Weber

Aaron Frick · July 2nd, 2007, 03:14 PM

OP: I blew a battery charger at a lodge in Lesotho. I was a Canon charger rated to 220v. The problem is that the electrical systems in Lesotho vary greatly, there is a town across the border in South Africa that was acutally putting out 260v and the hotel I was staying at had warnings posted by the outlets. I used a car charger and 120v converter most of the time. BTW: Not sure what your plans are in Lesotho, but if you have time try and make it to Sani Pass. Some great footage to be had there. Also the Matebang Pass area is exceptionally beautiful.

Tim Dashwood · July 2nd, 2007, 05:38 PM

Quote:

Originally Posted by Jemore Santos

Here in OZ we have our older 16mm and 35mm cameras that have no electronic or adjustable shutter angles at a fixed 172.8 degrees, so even in 50hz we can have the camera running at 24fps, it eliminates flicker. Now if Tim can tell us what exactly 172.8 degrees is in Shutter speed, you will be able to run 24pfs in Africa.

172.8 degrees on a 24fps frame rate equals exactly 1/50th exposure per frame. Since the electrical frenquency is 50Hz there will be no flicker.

Steve Mullen · July 2nd, 2007, 07:51 PM

Quote:

Originally Posted by Jack Walker

I also wanted to check, if I am using only tungsten lights in Europe, can I shoot at 1/60? instead of 1/100 (or 1/50)?

No! They can flicker too. Simple rule, switch to 1/50th or 1/100th the moment you leave the USA except when going to Japan, Taiwan, and Korea.

Jack Walker · July 2nd, 2007, 08:13 PM

Quote:

Originally Posted by Steve Mullen

No! They can flicker too. Simple rule, switch to 1/50th or 1/100th the moment you leave the USA except when going to Japan, Taiwan, and Korea.

Thank you, I'll do so.

Which should I use, though if shooting 60i.... 1/50 or 1/100.

I guess that for 60i I should use 1/100 and for 24p or 30p I should use 1/50...

Is that correct?

Tim Dashwood · July 3rd, 2007, 07:49 AM

The frame rate is less relevant to flicker than exposure time. You can dial in 1/50 in 24P mode by setting the shutter switch to variable.
However, I don't think it is possible to select 1/50 in 60i or 60P mode.
I'm not even sure it is possible in 30P mode, but I'll check.

George Strother · July 3rd, 2007, 09:57 AM

The HD100 does not have a 1/50th shutter speed in 30p. It will have to be 1/100th and will require twice as much light.

July 2nd, 2007, 03:14 PM	#18
Aaron Frick Contributor Join Date: Sep 2001 Location: New Mexico Posts: 71	OP: I blew a battery charger at a lodge in Lesotho. I was a Canon charger rated to 220v. The problem is that the electrical systems in Lesotho vary greatly, there is a town across the border in South Africa that was acutally putting out 260v and the hotel I was staying at had warnings posted by the outlets. I used a car charger and 120v converter most of the time. BTW: Not sure what your plans are in Lesotho, but if you have time try and make it to Sani Pass. Some great footage to be had there. Also the Matebang Pass area is exceptionally beautiful. __________________ Land of Enchantment, New Mexico

July 3rd, 2007, 07:49 AM	#22
Tim Dashwood Wrangler Join Date: Aug 2005 Location: Toronto, ON, Canada Posts: 3,637	The frame rate is less relevant to flicker than exposure time. You can dial in 1/50 in 24P mode by setting the shutter switch to variable. However, I don't think it is possible to select 1/50 in 60i or 60P mode. I'm not even sure it is possible in 30P mode, but I'll check. __________________ Tim Dashwood

June 27th, 2007, 04:07 PM	#16
Jack Walker Trustee Join Date: Jun 2006 Location: Burbank Posts: 1,811	I also wanted to check, if I am using only tungsten lights in Europe, can I shoot at 1/60? instead of 1/100 (or 1/50)?

July 1st, 2007, 02:52 PM	#17
Daniel Weber Major Player Join Date: Mar 2005 Location: Maryland, USA Posts: 696	Jack, You should be fine, I would always check the image on a field monitor if available. I have shot stuff that looked fine on the LCD and then when you go to post the strobe effect is there. Good Luck, Dan Weber

July 3rd, 2007, 09:57 AM	#23
George Strother Major Player Join Date: Jun 2006 Location: San Diego, CA Posts: 204	The HD100 does not have a 1/50th shutter speed in 30p. It will have to be 1/100th and will require twice as much light.