Journal article
Geert J. Verhoeven
Archeologia Aerea. Studi di Aerotopografia Archeologica, vol. 3, 2008, pp. 195-210
Archeologia Aerea. Studi di Aerotopografia Archeologica, vol. 3, 2008, pp. 195-210
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Cite
APA
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Verhoeven, G. J. (2008). Digitally Cropping the Aerial View. On the Interplay between Focal Length and Sensor Size. Archeologia Aerea. Studi Di Aerotopografia Archeologica, 3, 195–210.
Chicago/Turabian
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Verhoeven, Geert J. “Digitally Cropping the Aerial View. On the Interplay between Focal Length and Sensor Size.” Archeologia Aerea. Studi di Aerotopografia Archeologica 3 (2008): 195–210.
MLA
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Verhoeven, Geert J. “Digitally Cropping the Aerial View. On the Interplay between Focal Length and Sensor Size.” Archeologia Aerea. Studi Di Aerotopografia Archeologica, vol. 3, 2008, pp. 195–210.
BibTeX Click to copy
@article{verhoeven2008a,
title = {Digitally Cropping the Aerial View. On the Interplay between Focal Length and Sensor Size},
year = {2008},
journal = {Archeologia Aerea. Studi di Aerotopografia Archeologica},
pages = {195-210},
volume = {3},
author = {Verhoeven, Geert J.}
}
Abstract
The first years of the new millennium have been very remarkable. With the advent of digital photography a new world has opened up for many people. Although photography will soon be celebrating its second centenary, there has never been a moment in history when so many people have owned and used a photographic camera. New technologies often introduce a totally new technical jargon and photography has been no exception in this respect. Although photography already had its own language, digital photography has added many new terms. In spite of the overwhelming amount of – supposedly – informative literature in the form of books, articles in magazines and items on the World Wide Web, most of these new terms remain as words of mystery for most practitioners. This is not always the fault of those seeking information, as a large proportion of this information flow is just misinformation floating around, not least on the Web. One of the often heard and read misconceptions is the fact that the focal length of lenses changes when they are used on a digital camera, leading to strongly magnified images as indicated by the digital magnification factor. By outlining the concepts of focal length and image sensor size, as well as their combined effect on field angle of view, this article aims to show why the statement is not correct. Furthermore, the quantification of angle of view will prove useful in the classification of lenses.
The first years of the new millennium have been very remarkable. With the advent of digital photography a new world has opened up for many people. Although photography will soon be celebrating its second centenary, there has never been a moment in history when so many people have owned and used a photographic camera. New technologies often introduce a totally new technical jargon and photography has been no exception in this respect. Although photography already had its own language, digital photography has added many new terms. In spite of the overwhelming amount of – supposedly – informative literature in the form of books, articles in magazines and items on the World Wide Web, most of these new terms remain as words of mystery for most practitioners. This is not always the fault of those seeking information, as a large proportion of this information flow is just misinformation floating around, not least on the Web. One of the often heard and read misconceptions is the fact that the focal length of lenses changes when they are used on a digital camera, leading to strongly magnified images as indicated by the digital magnification factor. By outlining the concepts of focal length and image sensor size, as well as their combined effect on field angle of view, this article aims to show why the statement is not correct. Furthermore, the quantification of angle of view will prove useful in the classification of lenses.