Virtual Tour Without Editing : Horizontal Fisheye Shot
An alternative method to create partial Virtual Tours with great ease and economy.
Besides the parabolic mirrors to capture 360 Degree Donut Shots, other instrument capable of photographing a panorama of 360 degree is a Fisheye lens. These lenses extend the ability of the cameras to a little beyond 180 degree in a single photo. The result is a circular image that includes a full hemisphere.
Photographing A Hemisphere With One Click
Besides capturing very beautiful images Fisheye lenses are particularly good for some specific functions, including photographing small indoor and/or outdoor very large spaces, or connected to security cameras, cover large environments from strategic locations.
By this method the entire environment is not shown but only its most interesting part, leaving out of the picture the opposite area. These Virtual Tours, although they do not cover more than half of the horizon line, they span all the scene's height from zenith to the nadir, and among other advantages they offer they do not need editing, can be photographed without a tripod, and potential deviations respect to the horizontal or vertical axis would not affect the image.
Below an example of Horizontal Fisheye Shot :
While a Fisheye lens always photographs 360 degree, it does so in a direction transverse to the axis of the camera, so that to capture what we would normally call 360 degree panoramas, it is necessary that it has a horizontal orientation. The Fisheye lens photographs entire hemispheres, ie circles of 360 x 180 degree. In Vertical Fisheye Shots, the circumference of 360 degree coincides with the horizon line, spanning it completely, so that we can talk about real 360 degree panoramas. If the orientation of the camera and lens are horizontal,the 360 degree circumference is transverse to the horizon and the resulting picture only covers half of it, so we consider these partial panoramas.
Transform The Horizontal Fish Eye Shot In Virtual Tour With One Click
The easiest way to transform an Horizontal Fish Eye Shot into an interactive Virtual Tour ready to be shared on multiple websites is to use our Online Virtual Tour Creator. It only takes to click here to enter the page, where among other options you will find a shortcut named create a new virtual tour.
This link takes you directly to the middle of the page, where the form to upload images is. Being yours a Fisheye Shot, tick with a tick the appropriate box. Doing so will display a new line with two options. To ensure that the system recognizes the loaded image as a Horizontal Fisheye Shot, tick the box identified with the word Horizontal: :
The options to add attached information are all optional, but it is recommended to type in a password as this will be required in case you wish to edit the information or remove the image from the database. The image file to be loaded is selected from its location on your hard disk by a dialog box :
After selecting the image and accepting, you must click on Upload Image Now and after a few seconds a new page will load with the new Virtual Tour. In the new page, the loaded image with attached data will look like this :
Simply click on the image to see the new interactive Virtual Tour performing :
The Virtual Tours created this way can be shared on multiple internet pages by just copying and pasting a code. For more information see the homepage of the Online Virtual Tour Creator.
A Common Problem: Misaligned Horizontal Fisheye Shot
Unlike 360 Degree Donut Shots or even Vertical Fisheye Shots, the Horizontal Fisheye Shots, by covering the whole horizon, presents practically no misalignment difficulties when transformed into interactive Virtual Tours. The eventual irregularities or undulations of the horizon line go largely unnoticed so it is possible to create excellent Virtual Tours with Horizontal Fisheye Shots even with photographs taken at oblique direction. In fact, in the example image the useful circle is closer to the upper limit than it is to the lower one and also closer to the right side than to the left of the picture, without making the perceived distortion evident.
This does not mean that to get a neater Virtual Tour termination it is not recommendable that the circle image is well centered within it. In most cases this will happen naturally as glasses and Fisheye converters connect to the cameras using sturdy enough threads and locks. Sometimes, however, you can capture Horizontal Fisheye Shots by simply leaning a fisheye lens or converter on a camera lens which is not compatible with it, hand-holding the system in position. In these cases it is likely that the resulting image deviates significantly from the desired alignment, so you should correct this defect. Next, we have exaggerated the misalignment on the example in this page :
As you can see to the right of the Virtual Tour, part of the scene was left out of view while the left end, in the other hand, shows the end of the picture and even beyond the scene, where you may see a significant sector of dark area corresponding to part of the original photo where the light has not come :
As in the case of 360 Degree Donut Shots and Vertical Fisheye Shots, the solution to this problem is simple: it is to crop the image leaving a square in the center fitting exactly the Vertical Fisheye Shot. In this way the center of the fisheye view and the center of the image will coincide and the Virtual Tour will work correctly. It is fair to say that this cropping is a minimum kind of edition of the image, so that it is no longer two-step job but three.
To crop the image you can use any image editor. It is advisable to check that at the end of the cut all sides of the image are equal, and if not, you should equalize them. At the example using Adobe Photoshop this is made with the Image Size tool :
The Horizontal Fisheye Shot cut and equalized looks finally like this :
Now, the Virtual Tour looks better :
From the next chapter we will see the different picture formats that we can get digitally editing one or more pictures.
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With any camera
360 Degree Interactive Panoramas
In Three Easy Steps
After reading this tutorial you'll be able to create your first 360 degree interactive photography with the camera you already have :
1 - Photograph
Take one or more pictures of the place you want to show.
2 - Edit
Convert your pictures into 360 degree panoramas.
3 - Publish
Make your panoramas interactive and available to the world on the internet.
If a picture is worth a thousand words, a 360 degree interactive panorama is worth a thousand pictures...
Online Virtual Tour Creator
Using the online virtual tour creator you can :
Convert your 360 degree pictures to virtual tours with a single click.
Insert your virtual tours into web sites, emails, blogs or wherever you like by just copying and pasting a text.
Know in a practical way all kinds of 360 degree pictures.
Discover that you can create hundreds of interactive virtual tours just as easily as you take pictures with your camera.
Check that with just one click from your camera and another click from your mouse it is possible to create a 360 degree interactive virtual tour out of nothing. And completely free of charge!!!
You can get started right now, even if you don't have a camera
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