Hugin Camera and Lens tab - Revision history

Harryvanderwolf: set as old gui wiki page

2013-01-26T12:02:21Z

set as old gui wiki page

Zarl: /* Lens */ more examples

2012-04-19T05:46:01Z

‎Lens: more examples

Zarl: /* Lens */ Examples added

2012-04-18T15:35:16Z

‎Lens: Examples added

Zarl: /* Lens */ added lens types

2012-04-04T08:09:20Z

‎Lens: added lens types

Aston: Note Reset... button

2009-09-29T11:12:20Z

Note Reset... button

Bruno: EXIF is now read from non-JPEG images too

2009-09-28T22:07:10Z

EXIF is now read from non-JPEG images too

Onomou: /* Lens */ Some unification; reworded equirectangular description

2009-09-15T06:06:47Z

‎Lens: Some unification; reworded equirectangular description

Karora: Force Table of Contents at top right

2009-04-29T22:18:53Z

Force Table of Contents at top right

Bruno: /* Vignetting Center Shift */

2007-06-20T20:31:09Z

‎Vignetting Center Shift

Bruno: /* Exposure and Color */

2007-06-09T23:03:06Z

‎Exposure and Color

← Older revision		Revision as of 12:02, 26 January 2013
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		+	! '''2013-01-01:'''
		+	! These are the wiki pages belonging to hugin versions up to and including 2012.0.0
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 The most important parameters are the '''[[Field of View|Horizontal field of view]]''' and the '''Lens type'''. Hugin supports the following projections in input images:
-* '''[[Rectilinear Projection|Normal (rectilinear)]]''' - The projection used by most cameras. It keeps straight lines straight. The maximum horizontal field of view is 180 degrees (for an image of infinite size, that is).
+* '''[[Rectilinear Projection|Normal (rectilinear)]]''' - The projection used by most ''standard'' cameras. It keeps straight lines straight. The maximum horizontal field of view is 180 degrees (for an image of infinite size, that is). Also [[Cubic Projection|cubes]] (e.g. rendered in a special application) use this type.
-* '''[[Cylindrical Projection|Panoramic (cylindrical)]]''' - Often used by panoramic cameras, such as the Horizon, Roundshot and Spheron cameras. This projection is also called simply ''cylindrical'' projection.
+* '''[[Cylindrical Projection|Panoramic (cylindrical)]]''' - This type is often simply called ''cylindrical'' projection. Usually used by panoramic cameras, such as the Horizon, Roundshot and Spheron cameras; sometimes output generated with early stitching software such as QTVRAS that only copes with single row panoramas.
-* '''[[Fisheye Projection|Circular fisheye]]''' - Used by fisheye lenses. If the image is circular or the corners of the image are black, use this type of fisheye lens. A circular crop in the [[Hugin Crop tab]] can be used for cutting away the edge borders.
+* '''[[Fisheye Projection|Circular fisheye]]''' - Used by many fisheye lenses. If the image is circular or the corners of the image are black, use this type of fisheye lens. A circular crop in the [[Hugin Crop tab]] can be used for cutting away the edge borders.
-* '''Full frame fisheye''' - Exactly the same projection as '''circular fisheye''', but the crop option will crop to a rectangle instead of a circle. This should be used for full frame fisheye images.
+* '''Full frame fisheye''' - Exactly the same projection as the above '''circular fisheye''', but the crop option will crop to a rectangle instead of a circle. This should be used for full frame fisheye images. A typical example for this type is a 15 mm fisheye on a full frame DSLR.
-* '''[[Equirectangular Projection|Equirectangular]]''' - A full spherical projection. These are generally created as the result of the stitching process, but it can be useful to reload a finished panorama to extract further images.
+* '''[[Equirectangular Projection|Equirectangular]]''' - A full spherical projection. These are not from real world lenses but generally created as the result of the [[Hugin Stitcher tab|stitching]] process; useful to reload a finished panorama to extract further images.
-* '''Orthographic''' - A projection that is e.g. used in cartography. A rare example for a fisheye lens that uses this projection is Nikon's early ''10mm f5.6 OP''.
+* '''[[Projections#Orthographic_projection|Orthographic]]''' - A projection that is e.g. used in cartography. A rare example for a fisheye lens that uses this projection is Nikon's early ''10mm f5.6 OP''.
-* '''Stereographic''' - Special fisheye lenses such as the Samyang 8 mm use this projection.
+* '''[[Stereographic Projection|Stereographic]]''' - Special fisheye lenses such as the Samyang 8 mm use this projection.
-* '''Equisolid'''
+* '''[[Projections#Equisolid_projection|Equisolid]]''' - Try this projection if your image is e.g. the reflection of a mirrorball or from the visor of an astronaut's helmet.
-* '''Fisheye Thoby''' is modeling the Nikkor 10.5 mm fisheye lens
+* '''Fisheye Thoby''' is modeling the Nikkor 10.5 mm fisheye lens.
 After the lens type has been specified, an estimate for the horizontal [[field of view]] (HFOV) is required. The HFOV specifies the horizontal opening angle of the image in degrees. Since most photographers are more familiar with [[Focal Length]] as a measure for the HFOV, it can be entered into hugin, and hugin will compute the HFOV from it. For this calculation the actual focal length and the [[crop factor]] of the camera are required. If the 35mm film equivalent focal length is known, a crop factor of 1 should be used.

@@ Line 35: / Line 35: @@
 * '''Full frame fisheye''' - Exactly the same projection as '''circular fisheye''', but the crop option will crop to a rectangle instead of a circle. This should be used for full frame fisheye images.
 * '''[[Equirectangular Projection|Equirectangular]]''' - A full spherical projection. These are generally created as the result of the stitching process, but it can be useful to reload a finished panorama to extract further images.
-* '''Orthographic'''
+* '''Orthographic''' - A projection that is e.g. used in cartography. A rare example for a fisheye lens that uses this projection is Nikon's early ''10mm f5.6 OP''.
-* '''Stereographic'''
+* '''Stereographic''' - Special fisheye lenses such as the Samyang 8 mm use this projection.
 * '''Equisolid'''
 * '''Fisheye Thoby''' is modeling the Nikkor 10.5 mm fisheye lens

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 * '''Full frame fisheye''' - Exactly the same projection as '''circular fisheye''', but the crop option will crop to a rectangle instead of a circle. This should be used for full frame fisheye images.
 * '''[[Equirectangular Projection|Equirectangular]]''' - A full spherical projection. These are generally created as the result of the stitching process, but it can be useful to reload a finished panorama to extract further images.
 After the lens type has been specified, an estimate for the horizontal [[field of view]] (HFOV) is required. The HFOV specifies the horizontal opening angle of the image in degrees. Since most photographers are more familiar with [[Focal Length]] as a measure for the HFOV, it can be entered into hugin, and hugin will compute the HFOV from it. For this calculation the actual focal length and the [[crop factor]] of the camera are required. If the 35mm film equivalent focal length is known, a crop factor of 1 should be used.

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 The Panorama Tools [[lens correction model]] has enough parameters to model most photographic images, these parameters can be set manually here in the '''hugin Camera and Lens tab''' or calculated automatically in the [[hugin Optimizer tab]].
 === Lens ===
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 [[hugin]] models the '''photometric''' parameters of a lens/camera combination in a similar way to the [[lens correction model]] for '''Geometric''' parameters.  These parameters can be set manually here in the hugin '''Camera and Lens tab''' or calculated automatically in the [[hugin Exposure tab]].
 === Exposure and Color ===

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 '''Load EXIF''' examines the selected image file and tries to determine the [[Field of View]]
-of the photo by reading embedded [[EXIF]] data, note that this currently only works for
+of the photo by reading embedded [[EXIF]] data. The same function is performed when initially adding photos so you only need
-[[JPEG]] images.  The same function is performed when initially adding photos so you only need
 this button to reset the '''Field of View''' if it has since changed.

← Older revision		Revision as of 22:18, 29 April 2009
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		+	\| __TOC__
		+	\|}
	The '''Camera and Lens''' tab looks a lot like the [[hugin Images tab]], except that the lens settings can be edited here.		The '''Camera and Lens''' tab looks a lot like the [[hugin Images tab]], except that the lens settings can be edited here.
	As in the Images Tab, multi-selection can be used to change the parameters for multiple images.		As in the Images Tab, multi-selection can be used to change the parameters for multiple images.

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 The centre of [[vignetting]] is rarely the exact centre of the photo. The two numbers
 here indicate the position of the vignetting centre. The scale is in pixels, with
-''0,0'' indicating the centre of the photo (TODO is this relative to the d & e parameters?)
+''0,0'' indicating the centre of the photo. The values are independent of the '''d'''
 As with other lens parameters, this '''Vignetting Center Shift''' can be optimised in

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 === Exposure and Color ===
-TODO
+'''Exposure (EV)''', EV stands for ''Exposure Value'', setting it to ''0'' (zero) will
 === Vignetting ===