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File:ExTubeMacro.png
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Summary

DescriptionExTubeMacro.png
English: Close - up photography using extension tube.

1 - Camera lens.
2 - Extension tube.
3 - Film/sensor.
y - Object height.
y'- Image height.
l - Width of extension tube.
H - First principal plane.
H'- Second principal plane.
e - Distance between principal planes.
s - Object distance.
s'- Image distance.
ß - Magnification.
f'ob. - Camera lens focal lenght
Δ = Object - image distance.

Example:
 f'ob. = 50 mm ; y = 33 mm ; y'= 24 mm ; ß = ? ; l = ?
ß = y' / y = 24 / 33 = 0.727

l = ß . f'ob. = 0.727 . 50 = 36.35mm
Date
Source Own work
Author Tamasflex

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GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by, the Free Software Foundation; with no Invariant Sections, "no Front-Cover Texts," and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue
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author name string: Tamasflex
Wikimedia username: Tamasflex
URL: https://commons.wikimedia.org/user:Tamasflex

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2011

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Date/TimeThumbnailDimensionsUserComment
current06:52, 12 October 2011Thumbnail for version as of 06:52, 12 October 2011946 × 484 (184 KB)TamasflexRedesign.
18:56, 11 October 2011Thumbnail for version as of 18:56, 11 October 2011944 × 485 (183 KB)Tamasflex{{Information |Description ={{en|1=Close - up photography using extension tube.}} |Source ={{own}} |Author =Tamasflex |Date =2011 |Permission = |other_versions = }} Category:Lens diagrams

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