Shooting ext day and filtering

Marco Graziaplena · 05-02-2009, 07:07 AM

Hi
when I shot ext day I use polarizer and nd to set the iso to more or less 20 asa. Sometimes I add a UV in case of backlight and flare, to lower the red color. This means you often got 3 filters in front of the lens. I'd rather avoid lowering iso on the camera to bypass the problem. I never tried changing shutter speed cause I'm afraid of the result...
Any suggestion

Martin Weiss · 05-02-2009, 07:18 AM

Maybe I misunderstood your question, but why would you set the ASA to 20? That sounds very low. I'd use a heavy ND with a hot mirror. A polarizer on top should give you an extra 2 or 2 1/2 stops of filtration. If you do not need the polarizer for effect, you could get a even stronger ND filter.

If your subject does not have lots of movement (for example landscape), you will also get good results with a small shutter angle. Have done it many times when there was no ND at hand. As always: test to see what pleases you.

Marco Graziaplena · 05-02-2009, 08:11 AM

Hi Martin
I set my lightmeter to 20 (more or less it depends on conditions) to have a t stop around 5.6 leaving 320 iso on the camera

Ryan Sims · 05-04-2009, 09:51 PM

Quote:

Originally Posted by Marco Graziaplena

set the iso to more or less 20 asa....

Okay, ISO and ASA are the same. The camera's ISO/ASA setting is 320. What is 20 on the light meter? Shouldn't it be 320 as well.

Cail Young · 05-04-2009, 10:25 PM

He's doing filter factor on the meter by setting it to 4 stops (if my maths is right) under the camera's rating. If you've got ND1.2 in the mattebox, then it makes perfect sense.

05-02-2009, 07:07 AM	#1
Marco Graziaplena Member Join Date: May 2009 Posts: 42	Shooting ext day and filtering Hi when I shot ext day I use polarizer and nd to set the iso to more or less 20 asa. Sometimes I add a UV in case of backlight and flare, to lower the red color. This means you often got 3 filters in front of the lens. I'd rather avoid lowering iso on the camera to bypass the problem. I never tried changing shutter speed cause I'm afraid of the result... Any suggestion __________________ Marco Graziaplena www.marcograziaplena.com

05-02-2009, 07:18 AM	#2
Martin Weiss Moderator Join Date: Mar 2008 Location: mostly Norway Posts: 3,518	Maybe I misunderstood your question, but why would you set the ASA to 20? That sounds very low. I'd use a heavy ND with a hot mirror. A polarizer on top should give you an extra 2 or 2 1/2 stops of filtration. If you do not need the polarizer for effect, you could get a even stronger ND filter. If your subject does not have lots of movement (for example landscape), you will also get good results with a small shutter angle. Have done it many times when there was no ND at hand. As always: test to see what pleases you. __________________ Λ ϐΐϯ ʘ⨗ ɱ⦯פϊϾ Norway Blog \| Vimeo \| Stock footage

05-02-2009, 08:11 AM	#3
Marco Graziaplena Member Join Date: May 2009 Posts: 42	Hi Martin I set my lightmeter to 20 (more or less it depends on conditions) to have a t stop around 5.6 leaving 320 iso on the camera __________________ Marco Graziaplena www.marcograziaplena.com

05-04-2009, 10:25 PM	#5
Cail Young Senior Member Join Date: Jan 2007 Location: Melbourne, Australia Posts: 1,584	He's doing filter factor on the meter by setting it to 4 stops (if my maths is right) under the camera's rating. If you've got ND1.2 in the mattebox, then it makes perfect sense. __________________ Cail Young RED/Post/Workflow Inspiration Studios, Melbourne, Australia

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