File:Set di diaframmi per obiettivo fotografico - Museo scienza tecnologia Milano 13094.jpg
Original file (1,280 × 853 pixels, file size: 279 KB, MIME type: image/jpeg)
Captions
set di diaframmi per obiettivo fotografico - diaframmi di tipo Waterhouse. ( ) | ||||||||||||||||||||||||
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Author |
Waterhouse John (inventore) |
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Title |
set di diaframmi per obiettivo fotografico - diaframmi di tipo Waterhouse. |
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Description |
Italiano: Questo set di diaframmi è costituito da cinque piccole lamine metalliche di forma all'incirca rettangolare con una parte sporgente per consentirne l'impugnatura. Al centro le lamine presentano dei fori di diversi diametri e numerati da 1 a 5 (da 1,2 a 0,3 cm circa) I diaframmi sono conservati in una custodia in pelle marrone.
Variazione della quantità di luce passante attraverso un obiettivo ed incidente sull'emulsione fotografica.
Il diaframma va inserito nella fessura trasversale posta sul cilindro dell'obiettivo A fori più piccoli corrisponde una minor quantità di luce incidente ed un più esteso campo di messa a fuoco, viceversa per fori più grandi.
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Date |
between 1850 and 1899 date QS:P571,+1850-00-00T00:00:00Z/7,P1319,+1850-00-00T00:00:00Z/9,P1326,+1899-00-00T00:00:00Z/9 |
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Medium | pelle | |||||||||||||||||||||||
Dimensions |
height: 1 cm (0.3 in); width: 3 cm (1.1 in) dimensions QS:P2048,01U174728 dimensions QS:P2049,3U174728 |
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Collection |
institution QS:P195,Q947082 |
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Accession number |
13094 |
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References |
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Source/Photographer | Catalogo collezioni (in it). Museoscienza.org. Museo nazionale della scienza e della tecnologia Leonardo da Vinci, Milano. | |||||||||||||||||||||||
Permission (Reusing this file) |
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:19, 21 May 2016 | 1,280 × 853 (279 KB) | Federico Leva (WMIT) (talk | contribs) | {{ICCD TRC | institution = {{institution:Museoscienza}} | permission = {{cc-by-sa-4.0}} | RSR1 = Brenni, Paolo | CTP = Industria, manifattura, artigianato | AUT1R = inventore | BIB2G = Comprehensive Guide for Camera Collectors | AUT1N = Waterhouse J... |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Canon |
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Camera model | Canon EOS-1Ds Mark II |
Author | Peter Aaron |
Exposure time | 1/15 sec (0.066666666666667) |
F-number | f/13 |
ISO speed rating | 160 |
Date and time of data generation | 06:38, 22 June 2009 |
Lens focal length | 200 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS4 Macintosh |
File change date and time | 03:57, 6 July 2009 |
Exposure Program | Manual |
Exif version | 2.21 |
Date and time of digitizing | 06:38, 22 June 2009 |
APEX shutter speed | 3.906891 |
APEX aperture | 7.400879 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Partial |
Flash | Flash did not fire, compulsory flash suppression |
Color space | Uncalibrated |
Focal plane X resolution | 3,526.7605633803 |
Focal plane Y resolution | 3,528.0423280423 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Manual white balance |
Scene capture type | Standard |
Width | 3,280 px |
Height | 2,186 px |
Compression scheme | Uncompressed |
Pixel composition | RGB |
Number of components | 3 |
Image width | 1,280 px |
Image height | 853 px |
Serial number of camera | 305634 |
Lens used | 70.0-200.0 mm |
Owner of camera | Peter Aaron |
Bits per component |
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Rating (out of 5) | 0 |
Date metadata was last modified | 05:57, 6 July 2009 |
Unique ID of original document | xmp.did:57CB897A33206811910987FCB8EBC128 |