[Leica] Medium Format Digital

[rgacpa at yahoo.com (Bob Adler)]

Thanks Henning. I stand correctly corrected!
Bob
 Bob Adler
Palo Alto, CA
http://www.rgaphoto.com




________________________________
From: Henning Wulff <henningw at archiphoto.com>
To: Leica Users Group <lug at leica-users.org>
Sent: Thu, July 7, 2011 12:55:31 AM
Subject: Re: [Leica] Medium Format Digital

At 11:42 PM -0700 7/6/11, Bob Adler wrote:
>My P45+ stitched in portrait orientation (18mm shift on each side) 
>with the 35mm lens gives a rough equivalent of a medium format 
>17.5mm lens. That translates into what, about a 12mm rectilinear 
>35mm equivalent?



That will give you a 35mm lens for a 49.1mm x 72.8mm format.
That's 17mm equivalent in 35mm, not 12. To get the equivalent angle 
of view of a 12mm lens, you'd have to be shooting with a 24mm lens on 
your setup, and do the shift.






>
>And you want what?
>See:
>http://www.rgaphoto.com/GT/content/Valley_View_Pano_W_large.html
>
>This image is from 3 main segments produced by using 3 back shifts 
>with a portrait oriented P45+ and 35mm lens, for each segment. The 3 
>back shifts of each segment were stitched together from the images 
>of the 35mm lens shifted in portrait orientation. This roughly 
>equates to the view of each of the 3 segments equaling the field of 
>view of a 17.5mm medium format lens/ 12mm lens on a 35mm format 
>system.  3of these were stitched(swinging the camera on a panoramic 
>head) to give the image. It was then cropped. The file is over 2.2GB.
>
>Give me a place to stand and I will hang this image!
>
>In all seriousness there are some correctly stated and some 
>overstated items in this expose. But all in all, medium format for 
>landscapes is at a really nice place right now...
>
>Anyone want to buy some Hassy V and Canon equip? :-)
>Bob
>
>Bob Adler
>http://www.rgaphoto.com
>
>On Jul 6, 2011, at 9:25 PM, Richard Man <richard at imagecraft.com> wrote:
>
>>  My pipe dream is that someone, well, Fuji specifically :-) would make a
>>
>>  18x49mm sensor, and build a digital RF system for it. The sensor size is
>>  just about the same size as the "full frame" 35mm, so the technology and
>>  cost is known (remember that full frame Canon and Sony are as "low" as
>>  $2500).
>>
>>  The result would of course be a cropped digital XPan. The lens should be
>>  much easier to design - heck, lets make them all F2.8 while we are at it.
>>
>>  Sell the whole system with 3 lens (30, 45 and 90 equivalent) for $10,000 
>> to
>>  $12,000, and I bet they will sell at least as many of that as Pentax 
>> 645D.
>>
>>
>>
>>
>>  --
>>  // richard <http://www.imagecraft.com/>
>>  // icc blog: <http://imagecraft.com/blog/>
>>  // richard's personal photo blog: <http://www.5pmlight.com>
>>  [ For technical support on ImageCraft products, please include all 
>> previous
>>  replies in your msgs. ]
>>
>>  _______________________________________________
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>
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-- 

       Henning J. Wulff
  Wulff Photography & Design
mailto:henningw at archiphoto.com
  http://www.archiphoto.com

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