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Re: [OM] Really Wide medium format

Subject: Re: [OM] Really Wide medium format
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Sat, 26 Dec 2009 11:31:20 -0500
Thanks.  That info on no center filter for 115mm is good as 115mm on 
6x17 is about the same horizontal angle of view as a 24mm lens on 35mm. 
  Is there some documentation somewhere on center filters and need for same?

Chuck Norcutt


Brian Swale wrote:
> Chuck wrote
> 
>> I know Brian ordered (and maybe got) an Obsession 6x17 camera from the guy
>> in Oz who builds them.  Anyone have experience using these things. Advice?
>>  What about the (relatively) inexpensive Chinese Gaoersi cameras on
>> ebay... such as this one (which also has shift capability)
>> <http://cgi.ebay.com/New-Gaoersi-617-SHIFT-6X17-CAMERA_W0QQitemZ3303443640
>> 35QQcmdZViewItemQQptZFilm_Cameras?hash=item4cea0ef803> The Gaoersi does
>> multiple format (6x12, 6x14, 6x17).  What about lenses and, in particular
>> the need for center filters to control vignetting. Needed at 6x17 but are
>> they also needed for 6x12 or 6x14?
> 
> Yes, indeed I did get one (Obsession 617), and have put several (but not 
> enough !! ) shots through it.
> 
> It has a Rodenstock 115mm lens, and unlike the 90mm Schneider lenses, 
> does not need a centre filter ( a saving of at least $1,000 NZ).
> 
> If you don't mind wasting a bit of film,  6 x 17 neg can be cropped to 6 x 12.
> Sorry, I don't have any images uploaded for view.  My bad.
> 
> I'm at my alternate address currently; the internet connectivity is 
> appallingly 
> dreadful; sometimes eg tonight in the early morning, only 900 bits per 
> second, then it disconnects. Does weird things; I managed to download all 
> of Jim's grand-daughter shot even though it was well over 500kb in size ( 
> nice shot Jim), but Andrew's 2nd E-P2 shot with the wooden duck; in at least 
> 6 tries it disconnected at only 140kb downloaded - about half-way through. 
> 
> Enough to try the patience of a saint - and I'm no saint.
> 
> Brian Swale. 
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