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kansalliskala
Joined: 19 Jul 2007
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Location: Southern Finland countryside
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 Posted: Tue Jun 21, 2011 12:06 pm Post subject: Don't understand: Academy TLR |
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kansalliskala wrote:
I don't understand how this focuses?
http://www.earlyphotography.co.uk/site/entry_C154.html#C154
| Quote: |
| It consists of a pair of vertically mounted lenses which slide for focusing. |
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berraneck
Joined: 24 May 2009
Posts: 972
Location: prague, czech republic
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| Posted: Tue Jun 21, 2011 1:19 pm Post subject: Re: Don't understand: Academy TLR |
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berraneck wrote:
as ussual TLR
I understand that the lower box is purposed for storing negative glass plates
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Nesster
Joined: 24 Apr 2008
Posts: 5883
Location: NJ, USA
Expire: 2014-02-20
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| Posted: Tue Jun 21, 2011 1:38 pm Post subject: |
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Nesster wrote:
The viewing and taking lenses are recessed behind the front board, and focus is probably done internally, sliding the lens board back and forth within the camera.
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peterqd
Joined: 28 Feb 2007
Posts: 7448
Location: near High Wycombe, UK
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| Posted: Tue Jun 21, 2011 1:54 pm Post subject: |
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peterqd wrote:
| Nesster wrote: |
| The viewing and taking lenses are recessed behind the front board, and focus is probably done internally, sliding the lens board back and forth within the camera. |
On the contrary, according to the diagram it looks as though the knob at the rear of the camera moves the film plate backwards and forwards. The lens appears to be fixed.
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Nesster
Joined: 24 Apr 2008
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Location: NJ, USA
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| Posted: Tue Jun 21, 2011 1:56 pm Post subject: |
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Nesster wrote:
Ah, so it is!
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vilva
Joined: 04 Mar 2007
Posts: 785
Location: Porvoo/Borgå, Finland
Expire: 2015-05-27
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| Posted: Tue Jun 21, 2011 3:17 pm Post subject: |
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vilva wrote:
The diagram is incomplete -- the lens panel sliding mechanism is missing. In the second photo, above the plate handler knob, you can see a heavy wire loop with the wire going through the back wall and disappearing between two horizontal panels towards the lens panel. The internal structure of the camera must be more complex than depicted in the diagram. The lens panel is probably the bottom of a sliding box with the walls sliding between double panels in the camera body. The walls of the box provide support for the lens panel and prevent light leakage.
Veijo
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