Archived posting to the Leica Users Group, 2001/03/11
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At 7:50 PM -0500 3/10/01, Dan Cardish wrote:
>I believe that the 12's coverage is 120º
>
>dan c.
>
>At 03:59 PM 10-03-01 -0800, Henning Wulff wrote:
>>
>>The 12 and 15 are completely different in what they can do and how
>>things feel doing them. 112 degrees and 100 degrees side to side
>>respectively means that you can stand in the corner of a room and get
>>_all_ the walls in. I've used a 15 for over 25 years and I've had the
>>12 for nearly 5 months now, but taming the 12 is still going to take
>>a while.
>>
>>Even wider is a 35 (actual focal length 36.1mm) on 4x5. This gives
>>dark corners, but it can still be quite effective. 120 degrees side
>>to side, and 105 degrees top to bottom, and all rectilinear. It
>>covers 6x12 easily, with some movements.
>>
No, the 12mm covers 112 degrees side to side, 90 degrees top to
bottom and 122 degrees on the diagonal.
I generally prefer to think of the angular coverage in the horizontal
or vertical coverage, rather than the diagonal as it seems to make
more sense in actual picture taking.
- --
* Henning J. Wulff
/|\ Wulff Photography & Design
/###\ mailto:henningw@archiphoto.com
|[ ]| http://www.archiphoto.com