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Thread: oneshot panorama

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hpecom

Posts: 1
Location:
Registered: 25 Dec 2004
Re: oneshot panorama
Posted: 25 Dec 2004 at 17:14 GMT
Q1 How did you determine the distance need for the bolt and the "mail holder"

Q2 What type of filter ring did you use?
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Pelle Piano

Posts: 56
Location: Farsta, Sweden
Registered: 19 May 2004
Re: oneshot panorama
Posted: 25 Dec 2004 at 21:36 GMT
updated: 25 Dec 2004 at 21:37 GMT
It was just guesswork. The only important distance is from the ball to the object it is attached to. To short distance and you get to much of the device itself. The ball should have as much "view" as possible. So the higher the better. It could be several meters if you got enough zoom =).

I have a standard Olympus tube (device to attach external lenses to the 5050 ). The device I bult has no screws or anything, but a little to tight hole ( in the cardbore ) where I but the tube before screwing the device ( tube ) on .

I then took a lot of images to see where the best focus of the ball was ( using f8 ).
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Jeffrey Martin

Posts: 275
Location: Prague, Czech Republic
Registered: 5 Dec 2004
Re: oneshot panorama
Posted: 27 Dec 2004 at 4:08 GMT
congrats smile you get my "photographers' anti-rip-off" prize for 2004!! Too many SIMPLE products for photographers are SO expensive! (I guess helmut dersch's panorama tools does have this "mini panorama" conversion also, for convex images...)

I've located some 3.75 inch silver xmas balls! I'll build my own soon! And I can say, I'm glad to know that I'll have another very useful technique in my bag of tricks!!

Does anyone know where to find an xmas ball that's bigger than 3.75 inches? I haven't had any luck yet... what do you call those big silver balls (one foot diameter)? gazing balls or something?
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Jeffrey Martin

Posts: 275
Location: Prague, Czech Republic
Registered: 5 Dec 2004
Re: oneshot panorama
Posted: 27 Dec 2004 at 4:11 GMT
gazing ball, yes!

www.krupps.com/Gazing-Balls/1_PricePromo_35_3_mol...

10 inch stainless steel, perhaps? very surprised
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Jeffrey Martin

Posts: 275
Location: Prague, Czech Republic
Registered: 5 Dec 2004
Re: oneshot panorama
Posted: 27 Dec 2004 at 4:16 GMT

I would guess, with a 10 or 12-inch gazing ball, and a canon 70-200 lens, from 2 or 3 meters, it would be possible to make a HIGH quality one-shot panorama....

Now, the final question is, how to make a SPHERICAL image....
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Pelle Piano

Posts: 56
Location: Farsta, Sweden
Registered: 19 May 2004
Re: oneshot panorama
Posted: 27 Dec 2004 at 10:47 GMT
The camera takes the image from under the ball it would be hard to make a device getting the ball that far away from the camera.

And the size is not important. Its the quality of the balls surface.

The Panotools plug for Photoshop can convert the image, or you can also just use the Polar Coordinates filter ( the later only for images taken under the ball ).
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charles

Posts: 13
Location: United States
Registered: 19 Nov 2004
Re: oneshot panorama
Posted: 31 Dec 2004 at 10:05 GMT
Pelle this device is great. Your posts are all very helpful but I hope for more each time. It would great if you walked us through the making of the device and added how you decided on the distance of the ball to the camera. Also it would great to add directions of taking the image from your camera and making into a flat image and putting it into your 360 viewer successfully.

A tutorial maybe- I believe you would be a hero to many viewers of this website and beyond this small portion of the web.

Even if you feel the instructions are lame they probably will be helpful to someone. Great job on the device. Keep the posts coming.

If you made a tutorial I believe you would have over 500 vistors a day to your site as many would link to your site. Place a tip jar from Pay Pal on your site and sell your best image through a site such as dpcprints.com.
cool
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Pelle Piano

Posts: 56
Location: Farsta, Sweden
Registered: 19 May 2004
Re: oneshot panorama
Posted: 31 Dec 2004 at 11:23 GMT
Im not that good writing tutorials, and there is not much to making the device. Glue,3 bolts, a screw without head, cd-cover, the cylindric thing ( in my cas a letter basket from Taiwan in wood I found in my hardware store ) that could be anything from a adjusted coca cola plastic bottle to anything cylindric with a open top and bottom, and the cardbore bottom , formed with a scissor, with a whole in the middle for the lens.

The cd shape was formed using a welding iron ( I think its called that ) , melting unwanted parts ( smells funny and makes you act funny for a while ).

The distance from ball to camera can be tested my just having the ball on a table and shooting att different distances ( for testing purposes you dont need to have the camera under the ball, although its more fun getting the right perspective fro start ). Its just a matter of checking how much of the camera should be visible in your images. The distance has nothing to do with the quality of the shots. ( my current distance is about 22 cm ).

To straighten out the image ( as explained earlier ) you use the Polar Coordinates filter in Photoshop. Then you have to crop it ( just top and bottom ) and as it is upside down correct that too. Often you need to correct the height too. Then just save the image and use some of the java applet players that are around. I use the Janorama player which is very easy to use. Just the applet and the html ( in which image name, size and so on are written.

Hope that helps a little.
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New-Spin

Posts: 2
Location: Ottawa, Canada
Registered: 1 Jan 2005
Re: oneshot panorama
Posted: 1 Jan 2005 at 20:16 GMT
confused
WAY cool idea.

I'm about half-a-year late to make a timely comment but I thought I'd get this thread active again.

I converted from Mac to WinXP this year and one area the XP machine is behind is QuickTimeVR development.

After pulling my hair out and getting rather depressed with the low quality of a lot of the so-called "pro" VR software on the PC, I came across this discussion.

Whoa. No need to stitch - and no need to buy a $1,000 lens!

One question I have: what resolution are you capturing at? The commercial doo-dads seem to mate well with 2megapixel cameras (1000x2000 pix range) - is 1.0 MP or 1.5 MP too low or can you get away with it? (for the VRs demoed here, for example)
I could do this on a 35mm cam of course but I'm thinking of buying a used digicam to save a step.

Chris
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Ken Warner

Posts: 821
Location: Mammoth Lakes, United States
Registered: 14 Aug 2004
Re: oneshot panorama
Posted: 2 Jan 2005 at 19:41 GMT
I wonder if you could use an Acrylic Cylinder Riser....

www.nicetoys.com/jaspherecyclinders.html

www.displaycasestor.com/jewelry-acrylic_risers.php

Get one big enough to put the camera inside and the ball on top.
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Pelle Piano

Posts: 56
Location: Farsta, Sweden
Registered: 19 May 2004
Re: oneshot panorama
Posted: 2 Jan 2005 at 20:42 GMT
updated: 2 Jan 2005 at 21:18 GMT
IMy camera is 2450x1900 which mean the theoretical maximum height of the panorama can not be higher than 950 pixels ( its always half the height ). I settle for 500 in height and display at 300 as the images seems to look the best that way, but I guess it also depends on the "lens".

And yes, the cylinder is actually what I am looking at myself but not having the ball on top but inside ( although on the top side ). See the VSTONE concept of this page.
translate.google.com/translate?u=http%3A%2F%2Fwww.tbk.de%2Fpanorama%2Fshow3.htm&langpair=de%7Cen&hl=en&ie=ISO-8859-1&safe=off&prev=%2Flanguage_tools
Great links, I never thought about jeweler stores.
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Gustaaf

Posts: 24
Location: Netherlands
Registered: 5 Apr 2005
Re: oneshot panorama
Posted: 1 May 2005 at 9:55 GMT
Hi forum members,

I played around with this X-mas ball idea using a ball diameter of appr. 5 cm and a Sony F828 (28-200 mm) with F8 and got some moderate results.
Therefore, a few questions:
1. I placed the ball appr. 5 cm from the lens and I figured that the camera should be focussed on the ball and not on the subjects reflected by the ball. Is this correct?
2. Should the camera viewer be filled as much as possible by the ball image?
3. If I place the ball appr. 20 cm from the lens, the ball image in the camera viewer becomes about a 1/4 of the viewer sizw. Then I zoom in untill the viewer is filled. But then I cannot get it focussed. Am I doing/thinking something wrong?
Best Regards,
Gustaaf
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Pelle Piano

Posts: 56
Location: Farsta, Sweden
Registered: 19 May 2004
Re: oneshot panorama
Posted: 6 May 2005 at 14:57 GMT
1. Yes, focus shoul be on the ball and preferrably not on the bottom but to the middle of visible side of the ball. Use as high aperture as possible ( iuse f8 which is the highest for my camera).

2. Tes, for resolution resons.

3. Set the focus manually ( make many testshots until you get the best spot to focus on ). Ususlly you need a longer distance to the object if the zoom is used. Try the macro mode if you have any and zoom there.
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Gustaaf

Posts: 24
Location: Netherlands
Registered: 5 Apr 2005
Re: oneshot panorama
Posted: 23 May 2005 at 18:46 GMT
Hello PP,
My understanding to achieve the best results (provided the ball surface quality is OK enough) is as follows (please comment or correct):
1. Fill the viewer as much as possible with the ball image in order to achieve the highest resolution possible
2. Put the ball as far as posible away from the lens, so that in combination with the maximum applicable zooming, the viewer is just filled with the ball image.
In my case I can zoom in only a factor of 2, otherwise I cannot get it focused anymore (Sony F828 macro mode). 2a. I found that zooming in increased the FOV of the final image (is this observation correct/supported ?)
2b. I guess that the depth of field (with F8) is beter/larger when the ball is as far away as possible from the lens (correct?).
3. PP, I noticed you used Janorama. How can one set hotspots in Janorama?
Best regards,
Gustaaf
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Pelle Piano

Posts: 56
Location: Farsta, Sweden
Registered: 19 May 2004
Re: oneshot panorama
Posted: 30 May 2005 at 23:03 GMT
1 yes
2 The longer the distance to the ball the less space the camera will take on the final image.
2b In my mind it would be the other way around, or be
he same.
3. Havent the faintest idea.
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