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Re: [OM] [OT] Center filters

Subject: Re: [OM] [OT] Center filters
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Mon, 20 Jul 2009 07:49:39 -0400
Thanks.  What defines wide angle?  Also, if printing large format from 
an enlarger is there an equivalent center filter that can be applied to 
the enlarger lens?

Chuck Norcutt

Dawid Loubser wrote:
> Hi Chuck,
> 
> Yes, it's very common to use centre filters for all wide-angle large  
> format
> photography, unless you really want extreme dark corners for effect,  
> or if you're
> not shooting colour slide film, which means the darkening is often  
> corrected during
> printing or digitally post-scan.
> 
> I never shoot my 6x17 camera without the centre-filter (well, I did  
> last weekend for the
> first time, still have to see how the images came out).
> 
> 
> On 20 Jul 2009, at 2:57 AM, Chuck Norcutt wrote:
> 
>> With all the discussion of 617 cameras today I finally discovered the
>> term "center filter".  I had a hunch what it was but verified the  
>> hunch
>> that it was used to control vignetting when I discovered this.
>> <http://www.bhphotovideo.com/c/product/149254-REG/Linhof_022302_Center_Filter_95mm_for.html
>>  
>> This raises a question in my mind whether the use of center filters is
>> common in large format photography with wide angle lenses.  After  
>> all, a
>> 6x17cm negative is basically a horizontal 2-1/4" wide slice out of a
>> 5x7.  Vignetting tat the corners of a 5x7 negative must be even worse.
>>
>> Chuck Norcutt
>> -- 
> 
> 
-- 
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