[rollei_list] Re: Rollei taking and viewing lens alignment
- From: Eric Goldstein <egoldste@xxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Wed, 20 Sep 2006 17:37:16 -0400
David Dodge wrote:
I'm puzzled by all the ingenuity spent on parallax correction. It seems
easy enough to just aim a bit high, 1-1/2 inches on my Yashica. .
Most parallax correction contraptions are a bit of a makeshift.. Since
the viewing lens is a bit higher it looks over things that might block
the view of the taking lens. The Mamiya folks solve this with a device
that fits between the camera and the tripod, that will jack the taking
lens into the same place as the viewing lens. I have taken advantage of
the bellows of a Mamiya to make 6x6 macro pictures by making pencil
marks on the tripod. This wouldn't work if the camera had parallax control.
David
It's more the difference in the position of objects relative to each
other (perspective) that is of more concern shooting a TLR close in than
the error in framing (which is what the correction tries to compensate
for). The paramender device Mamaya produced that you describe corrects
for the perspective/parallax error. A. Adams was bothered by this and
avoided TLRs and rangefinders because of it...
Eric Goldstein
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