konradosfotos@gmail.com wrote:

Same times auto rotation doesn't work after export planar/horizontal panorama

If you have autorotation set then the effect with a planar projected image will be to pan to and fro.

Why are you using a planar projection for a pano image with a 360 degree horizontal field of view?

If you want the pano to rotate a full 360 then use a spherical projection.

Last edited by mediavets (2011-02-25 20:52:19)

konradosfotos@gmail.com wrote:

"Why are you using a planar projection for a pano image with a 360 degree horizontal field of view?" What you mean?Why I shoud dont't use it when it's in option in tour pro.

Because it is quite irrational and illogical to use a planar projection in Panotour with an image with a 360 degree HFOV that has been rendered with a spherical projection:

See: http://www.autopano.net/forum/p78156-to … -05#p78156

The planar projection exists to allow you to include images created with a planar projection in a tour. This would normally mean conventional photo images rather than stitched pano images, but you could use stitched pano images created using a planar projection, which is only suitable for pano images with a HFOV of up to about 150 degrees:

http://www.autopano.net/wiki-en/action/ … ting_Modes

http://www.cambridgeincolour.com/tutori … ctions.htm

Last edited by mediavets (2011-02-25 21:14:07)

konradosfotos@gmail.com wrote:

hmmm...

Andrew´s right. I realized you shot a 360° image - but only horizontal. If you had shot it 180° vertical too you´d have had a sphere.
The way you shot gets you a cylinder or a part of a sphere - Andrew described it already how to deal with it.

Making a planar projection from a 360° image can result in an equirectangular image - a spherical projection to a plane. Think of a world-map - it´s heavily distorted.
To make a planar image from a panorama works up to a wide angle of max. 120° or up to 150° using extreme Photoshopping to un-distort the extreme distortions. _Think of an exreme wideangle lens - the widest lenses (leaving aside fisheyes and swing-lens-cameras) has around 100 - 110°. And here are heavy distortions in the edges and they cause some problems because the back-lens is only some millimeters away from the film and therefore produces very diagonal light to the plane surface of the film.
To do the same in digital is impossible - therefore we use retrofocus lenses here. Using the same ultra-wide lenses as for analogue would produce tons of chromatic faults because very diagonal light rays falling on a sensor-array.

So there are correlations of wide angle photography and projections on plane surfaces. Photographing stitched images means nothing else but using a very, very wide angle lens - but in a pattern of small images instead of one image. This pattern has to be stitched together - and the result is a very, very, very wide virtual lens. And this one is hard to project on a plane.

best, Klaus