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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