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Re: [OM] Does anyone understand the ND filter selection here?

Subject: Re: [OM] Does anyone understand the ND filter selection here?
From: Chris Barker <ftog@xxxxxxxxxxxxxx>
Date: Tue, 18 Mar 2014 17:10:43 +0000
It's a bit incongruous that the chap has a Phase One kit in his boot, yet he 
chooses to use a µ43 setup for one of the shots.  I understand the use of 
sponsors' kit, but then he is using a Gitzo when he does work for Manfrotto.

It's no wonder his boot is full: he has to carry the kit provided by all his 
sponsors.

Chris

On 18 Mar 14, at 13:28, Jez Cunningham <jez@xxxxxxxxxxxxxx> wrote:

> Probably because it's the one he's got in his bag.
> I think he's sponsored by Lee Filters and they make a 'Big Stopper' (10
> stops) and recently a smaller (3 stop) one that they call (no, really?) the
> Little Stopper.
> Jez
> 
> btw (pedant alert)  - the other is a GRADUATED ND filter not a VARIABLE.
> 
> 
> On 18 March 2014 12:09, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
> 
>> Brian posted this link from Phase One recently
>> <
>> http://www.phaseone.com/en/Imaging-Software/Capture-One-Pro-7/Tutorials.aspx?openpopup=yes&url=www.youtube.com/watch?v=vx1Q0MGK3_0&utm_source=Apsis&utm_medium=Software_eblast&utm_content=mainimage&utm_campaign=w1214_software
>>> 
>> 
>> The video is in 2 parts (capture & post-processing) and my question only
>> pertains to part 1.  The photog takes a landscape photo using a 10 stop
>> ND filter combined with a variable ND filter and throughout the process
>> he speaks of reducing the contrast in the scene.  He also mentions using
>> a long exposure to blur the scudding clouds.
>> 
>> I don't recall the exact number but I think he ended up with a daylight
>> exposure of about 45 seconds.  I understand the use of the variable ND
>> filter to reduce the brightness of the sky but I don't understand the
>> use of a 10 stop ND filter.  Clearly the 10 stop ND filter is
>> responsible for the very long shutter speed but why so long.  It seemed
>> to me that the clouds were moving fairly briskly and that such a long
>> shutter speed wouldn't be required to simply blur the clouds.
>> 
>> It there some other reason for using that 10 stop ND filter that I don't
>> know about?
>> 
>> Chuck Norcutt
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