[OM] Re: Singh Ray vario duo - first impressions

[Chuck Norcutt]

Yes, of course.  I've never used one but it makes sense to me to use the 
Cokin system where I think you can vary the vertical position of the filter.

Chuck Norcutt

Jez Cunningham wrote:
> Maybe to reduce the DR?
> 
> On Tue, Nov 4, 2008 at 11:49 AM, Chuck Norcutt <
> chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
> 
>> Why would you use a grad filter on a digital image?
>>
>> Chuck Norcutt

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