Difference between revisions of "Ibso"
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|image_source= http://www.flickr.com/photos/33883444@N08/8236250022/in/pool-camerawiki/ | |image_source= http://www.flickr.com/photos/33883444@N08/8236250022/in/pool-camerawiki/ | ||
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| − | The '''Ibso''' shutter with a 3 blade diaphragm was made by [[Gauthier]] from 1908-1926. It was the first [[everset shutter]] (i.e. an 'automatic' shutter, not needing to be cocked) on the market.<ref>[http://www.prontor.de/go/unternehmen-firmengeschichte/english.html Gauthier (now Prontor) company history] at [http://www.prontor.de/go/home/english.html Prontor GMBH].</ref> It is found on many folding cameras of the period and has the usual limitation of everset shutters that it cannot offer very fast speeds; the original Ibso shutter gives speeds from 1 to 1/100 second, plus 'B' and 'T'. | + | |- |
| − | There are also | + | || |
| − | + | {{Flickr_image | |
| − | + | |image_source= http://www.flickr.com/photos/nicholasmiddleton/27452942271/in/pool-camerawiki/ | |
| + | |image= http://farm8.staticflickr.com/7205/27452942271_30870827bd_n.jpg | ||
| + | |image_align= right | ||
| + | |image_text= Eight speed Ibso shutter with 1/150th | ||
| + | |image_by= Nicholas Middleton | ||
| + | |image_rights= with permission | ||
| + | }} | ||
| + | |} | ||
| + | The '''Ibso''' shutter with a 3 blade diaphragm was made by [[Gauthier]] from 1908-1926. It was the first [[everset shutter]] (i.e. an 'automatic' shutter, not needing to be cocked) on the market.<ref>[http://www.prontor.de/go/unternehmen-firmengeschichte/english.html Gauthier (now Prontor) company history] at [http://www.prontor.de/go/home/english.html Prontor GMBH].</ref> The cylinder at the top of the shutter is a pneumatic air-brake which regulates the speed. It is found on many folding cameras of the period and has the usual limitation of everset shutters that it cannot offer very fast speeds; the original Ibso shutter gives seven speeds from 1 to 1/100 second, plus 'B' and 'T' and was provided with a cable release socket. There are also Ibso shutter variants that offer an extra speed of 1/150 sec. | ||
| − | Gauthier replaced the | + | Gauthier replaced the Ibso shutter with the [[Ibsor]]. |
Revision as of 21:01, 7 June 2016
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The Ibso shutter with a 3 blade diaphragm was made by Gauthier from 1908-1926. It was the first everset shutter (i.e. an 'automatic' shutter, not needing to be cocked) on the market.[1] The cylinder at the top of the shutter is a pneumatic air-brake which regulates the speed. It is found on many folding cameras of the period and has the usual limitation of everset shutters that it cannot offer very fast speeds; the original Ibso shutter gives seven speeds from 1 to 1/100 second, plus 'B' and 'T' and was provided with a cable release socket. There are also Ibso shutter variants that offer an extra speed of 1/150 sec.
Gauthier replaced the Ibso shutter with the Ibsor.
Notes
