Difference between revisions of "Clack"

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|image_source= http://www.flickr.com/photos/andrys_stienstra/3159788581/in/pool-camerawiki
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|image_text= Agfa Clack
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The '''Clack''' was manufactured by [[Agfa]] from 1954–65. Earlier models had a metal body, later ones were made of plastic. It is a simple camera not unlike certain tea-tins, with a single-element 95mm [[meniscus lens]]. While the lens does not focus, a secondary close-up lens may be flipped into place for nearer subjects. It takes 6&times;9 cm pictures on [[120 film]].
  
The '''Clack''' camera was manufactured by [[Agfa]] 1954-65. Earlier models had a metal body, later ones were made of plastic. It is a simple, boxlike camera, with a single-element 95mm [[meniscus lens]] with built-in close-up lens and yellow filter. It takes 6&times;9 cm pictures on [[120 film]].
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== Designed for economy ==
  
== Intelligent solutions ==
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To enable a simple meniscus lens to achieve reasonable sharpness, it is permanently stopped down to a small aperture (f/10 or less). The large 6&times;9 cm negative size requires little or no enlargement to create usable prints, so any flaws in the image are less noticeable. One feature to note is rounded camera back. There's no pressure plate inside the camera—the film isn't supposed to be held flat. The camera body is oval shaped when viewed from above, and the film is fed around the curved back of the camera to help match the curved plane of focus of the meniscus lens. This is a clever engineering solution to help keep camera costs low (one later adopted by many plastic 35mm [[trashcam]]s).
  
<div class="floatright">
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==Specifications==
[http://www.flickr.com/photos/goodimages/130189350/in/pool-camerapedia/ http://static.flickr.com/44/130189350_ecd571b793_m.jpg]</div>
 
  
To enable this camera to take quality pictures with such a simple lens, it is always stopped down to f/11 or below. The large negative size allows usable contact prints. The negatives don't need to be enlarged by so great a factor. The best feature is the curved film plane. There's no pressure plate in the back of the camera; the film isn't supposed to be flattened. The camera body is oval shaped when viewed from above, and the film is led around the curved back of the camera to create maximum sharpness: an intelligent solution to create a low-cost camera of decent quality.
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* Two apertures, roughly f/13 (sun icon) and f/10 (clouds icon)
 
 
More data:
 
* Aperture f/11 and f/12.5 <!-- Is this right? It seems very odd to have just two apertures, less than half a stop apart -->
 
 
* Shutter about 1/30 plus B
 
* Shutter about 1/30 plus B
* Built-in yellow filter
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* Built-in yellow filter (on some examples)
Zone focusing with two steps:  
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*Zone focusing with two steps:  
* 1-3m (3-10 feet) with a built-in close-up lens.
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** 1-3m (3-10 feet) with a built-in close-up lens (whose aperture is the same ~f/10 as the "cloudy" setting)
* 3m (10 feet)-infinity with just an aperture ring between the lens and the film
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** 3m (10 feet)-infinity (with either of the open aperture stops in place behind the lens)
  
== A useable camera ==
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== Shooting with a Clack ==
  
The Clack is a light viewfinder camera. It works great with ISO 50 slide films like Velvia, so use it while you can still get that film. Black and white ISO 50 films, and overexposing 100 speed color negative by one stop ought to be fine. <!-- I'm lost. Wouldn't the optimum speed depend on the situation? Forget indoors, just consider outdoors: What's best for sunny summers, and what's best for cloudy winters? -->
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While somewhat bulky, the Clack is a fun, lightweight camera to use. The 6&times;9 image format means that a roll of 120 film is finished after 8 shots, which may be an advantage for those impatient to see their results. Exposures using the "weather" symbols are suitable for film speeds in the range of ISO 125 down to ISO 50 (so even Velvia slide film might be tried). For greatest versatility, an ISO 400 negative film would give better exposures in deep shade or heavy overcast, but would have the latitude to tolerate a few stops of overexposure in full sun.  
  
== Loading the camera ==
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Some samples are equipped with a yellow filter, useful when shooting Black & White film to help deepen skies and reduce haze. Unusually for this class of camera, the Clack offers a tripod socket and accepts a cable release, so even some night photography using the "B" shutter setting becomes possible.  
<div class="floatright"> [http://www.flickr.com/photos/50678983@N00/273153752/in/pool-camerapedia/ http://static.flickr.com/87/273153752_ae7462f3e6_t.jpg]</div>
 
  
To change the film, use the bottom screw. Two arrows and a text in German and English show how to open the camera. The bottom and most all sides save the lensboard come off. The pictures shows the bottom screw and some of the imitation lizard skin that covers the body.
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== All-around views ==
<br>
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<div> [http://www.flickr.com/photos/50678983@N00/272119833/in/pool-camerawiki/ http://static.flickr.com/96/272119833_5aba0f237d_m.jpg][http://www.flickr.com/photos/50678983@N00/272119831/in/pool-camerawiki http://static.flickr.com/117/272119831_76429683ee_m.jpg][http://www.flickr.com/photos/50678983@N00/272119834/in/pool-camerawiki/ http://static.flickr.com/83/272119834_68b615b7b1_m.jpg][http://www.flickr.com/photos/50678983@N00/272119837/in/pool-camerawiki/ http://static.flickr.com/92/272119837_97158ee4d7_m.jpg][http://www.flickr.com/photos/50678983@N00/272119836/in/pool-camerawiki/ http://static.flickr.com/108/272119836_925aed01bb_m.jpg]</div>
<br>
 
  
== More images ==
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Images by [[:Category:image by Dries van den Elzen|Dries van den Elzen]] {{with permission}}
<div> [http://www.flickr.com/photos/50678983@N00/272119833/in/pool-camerapedia/ http://static.flickr.com/96/272119833_5aba0f237d_m.jpg][http://www.flickr.com/photos/50678983@N00/272119831/ http://static.flickr.com/117/272119831_76429683ee_m.jpg][http://www.flickr.com/photos/50678983@N00/272119834/in/pool-camerapedia/ http://static.flickr.com/83/272119834_68b615b7b1_m.jpg][http://www.flickr.com/photos/50678983@N00/272119837/in/pool-camerapedia/ http://static.flickr.com/92/272119837_97158ee4d7_m.jpg][http://www.flickr.com/photos/50678983@N00/272119836/in/pool-camerapedia/ http://static.flickr.com/108/272119836_925aed01bb_m.jpg]</div>
 
  
 
==Links==
 
==Links==
* http://cameras.alfredklomp.com/clack/index.htm
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*[https://www.butkus.org/chinon/agfa/agfa_clack_6x9/agfa_clack_6x9.htm Agfa Clack user manual] at [https://www.butkus.org/chinon/ Butkus.org]
* http://www.rolandandcaroline.co.uk/clack/clack.html
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* [http://cameras.alfredklomp.com/clack/index.htm AGFA Clack] at [http://cameras.alfredklomp.com/ Alfred's Camera Page]
* [http://www.collection-appareils.fr/agfa/html/clack.php Clack] at [http://www.collection-appareils.fr/general/html/francais.php www.collection-appareils.com] by Sylvain Halgand
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* [http://www.rolandandcaroline.co.uk/clack/clack.html AGFA Clack] at [http://www.rolandandcaroline.co.uk/ Roland and Caroline's Homepage]
  
 
[[Category: German 6x9 viewfinder]]
 
[[Category: German 6x9 viewfinder]]
 
[[Category: Agfa]]
 
[[Category: Agfa]]
 
[[Category: C]]
 
[[Category: C]]
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[[Category:image by Dries van den Elzen]]
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[[Category:120 film]]

Latest revision as of 05:35, 12 March 2023

The Clack was manufactured by Agfa from 1954–65. Earlier models had a metal body, later ones were made of plastic. It is a simple camera not unlike certain tea-tins, with a single-element 95mm meniscus lens. While the lens does not focus, a secondary close-up lens may be flipped into place for nearer subjects. It takes 6×9 cm pictures on 120 film.

Designed for economy

To enable a simple meniscus lens to achieve reasonable sharpness, it is permanently stopped down to a small aperture (f/10 or less). The large 6×9 cm negative size requires little or no enlargement to create usable prints, so any flaws in the image are less noticeable. One feature to note is rounded camera back. There's no pressure plate inside the camera—the film isn't supposed to be held flat. The camera body is oval shaped when viewed from above, and the film is fed around the curved back of the camera to help match the curved plane of focus of the meniscus lens. This is a clever engineering solution to help keep camera costs low (one later adopted by many plastic 35mm trashcams).

Specifications

  • Two apertures, roughly f/13 (sun icon) and f/10 (clouds icon)
  • Shutter about 1/30 plus B
  • Built-in yellow filter (on some examples)
  • Zone focusing with two steps:
    • 1-3m (3-10 feet) with a built-in close-up lens (whose aperture is the same ~f/10 as the "cloudy" setting)
    • 3m (10 feet)-infinity (with either of the open aperture stops in place behind the lens)

Shooting with a Clack

While somewhat bulky, the Clack is a fun, lightweight camera to use. The 6×9 image format means that a roll of 120 film is finished after 8 shots, which may be an advantage for those impatient to see their results. Exposures using the "weather" symbols are suitable for film speeds in the range of ISO 125 down to ISO 50 (so even Velvia slide film might be tried). For greatest versatility, an ISO 400 negative film would give better exposures in deep shade or heavy overcast, but would have the latitude to tolerate a few stops of overexposure in full sun.

Some samples are equipped with a yellow filter, useful when shooting Black & White film to help deepen skies and reduce haze. Unusually for this class of camera, the Clack offers a tripod socket and accepts a cable release, so even some night photography using the "B" shutter setting becomes possible.

All-around views

272119833_5aba0f237d_m.jpg272119831_76429683ee_m.jpg272119834_68b615b7b1_m.jpg272119837_97158ee4d7_m.jpg272119836_925aed01bb_m.jpg

Images by Dries van den Elzen (Image rights)

Links