panorama software,virtual tour software
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Joined: 2008-04-17
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2008-04-22
#1

Full 360* pano with 2 shots?

Hi,

Is it possible to make a full 360-degree panorama (including top and bottom) with 2 shots?

I want to make something similar to this. (demo on easypano.com)

I saw in Panoweaver's import screen an option for 2 images (screenshot).... and also easypano.com site has some info (see below) which seems to imply that this can be done:



If I buy the equipment from Easypano's recommended list - the Sigma 8mm lens and Nikon D200 - will I be able to make full panoramas with 2 shots? If not, is there something else I can buy that will do it?

Or if 2-shot complete top-to-bottom coverage is not feasible, what is the least number of shots required to do it? What equipment should I buy?

Thanks in advance,
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Joined: 2002-06-12
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2008-04-22
#2

The older Nikon 990 (not SLR) and a Nikon FC-E8 fisheye lens produces an image that is 183 degrees.  Taking 2 images provides a 3 degree overlap between 2 images (1.5mm each side).  This allows minimum overlap to produce a 360 x 180 rectilinear flat 2:1 image shown above.

Sigma 8mm produces 180 degree image on a full 35mm size sensor But 2 images have no overlap and probably could not be sitched properly.  Therefore 3 images taken at 120 degrees (or 4 at 90) would be necessary to have the needed overlap for a proper stitch.

The Nikon D200 (announced 01Nov2005) has a 23.6 x 15.8 mm CCD sensor which is not a full 35mm sensor.  Suggest you take 4 images at 90 degrees and go from there.

 


/s/
Dave
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Joined: 2008-04-17
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2008-04-22
#3
Great, thanks for the info.

I just looked and apparently the Nikon 990 and FC-E8 are so old, camera shops don't sell them. So I'm searching Ebay right now, there are some used ones there.

I don't really need high resolution super-sharp images.... I will be exporting to a Flash file for web viewing anyways. So this 990 and FC-E8 combo will take 2 shot panoramas that Panoweaver can stitch, yes?
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2008-04-22
#4

Because the Nikon D200 DSLR has an APS-C small 1.5x sensor your only options for lenses under $1000 USD are the Sigma 4.5mm Fisheye and the Sunex Superfisheye. These will allow 2 shot stitching.

Would I buy these and make 2 shot stitches? No, is my immediate answer simply because you waste so much of the cameras pixels and the maximum result will be no larger than 4500x2250. This is OK if you just want fast real estate panoramas, but you won't be making any art.

Fact is, all fisheye lenses get softer towards the edges of the image and suffer from vignetting. So shooting 3 or 4 shots and using the center area of the images will always yield superior results.

Regards, Smooth


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2008-04-22
#5
Quote: Originally posted by Handler on April-22-2008
So this 990 and FC-E8 combo will take 2 shot panoramas that Panoweaver can stitch, yes?

Yes.

Though you would "IF" you go down this path, be much better off with the Nikon Coolpix 5000 with current firmware as if can shoot RAW .nef files.

Don't even look at the FC-E9 because it is a lesser lens than the FC-E8 and three times the size and weight.

Regards, Smooth


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2008-04-23
#6
I agree with Smooth.
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Dave
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