48

I've had to preserve whiteboard scribbles a few times. The problem is that you usually can't control the lighting and it's rarely good. The technique I've converged on is to take two pictures. With the camera on a tripod, take the first picture of the board as is. Then erase the board and take the second picture with exactly the same settings. Now ...


17

Technically any software that is capable of stitching regular photos would be capable of stitching macro photos as well. However, to be able to accurately stitch photos they need to be taken with little or no parallax (movement of the camera's optical centre). This is typically achieved by rotating the camera/lens about it's optical centre using a "VR" ...


17

You might want to look at weather forecasts for astronomy - some of these sites go into more details than generic weather forecasts, and have predictions for things of interest to astronomers, including seeing (how steady/turbulent the atmosphere is) and transparency (how clear the atmosphere is). A web search for "astronomical weather forecasts" will find ...


16

I can't settle for an alternative that's not vertically 360 degrees (or at least much more than 180 degrees). A camera that shoots in every possible direction is said to have a field of view of 360 (horizontal) x 180 (vertical) degrees. Having more than that means you will be capturing some or all of the scene twice. Consider an imaginary arc that spans 180 ...


15

What you are trying to construct is a parallel motion panorama. Its been on my TODO List to do so far a while but I have not done it myself yet. Microsoft ICE supports this. It is the only software which I know of to do automatic stitching of parallel motion panoramas. You will find that option under 'Camera Motion' below and to the left of the preview ...


14

I believe the Horizon camera is an example of a slit-scanning camera. During the exposure, the lens assembly rotates from one end of the panoramic field to the other. A narrow slit is used to ensure that only a thin line of film is being exposed at any instant. The result is that the whole image is exposed using the center of the lens, which can form a high-...


14

This picture is a composition of slices of many photos taken from different heights, likely from a drone. The key to understanding it is to examine the camera's perspective or point of view from different horizontal slices of the composited image. For approximately the bottom quarter of the image, the camera is below the roof lines of the buildings at the ...


13

A panorama is, in its original usage, a wide angle horizontal image. In fact, it's a horizontal image painted in a complete circle around a room. That was in the late 1700s, though, and by the time the idea got to photography, it had been watered down to some degree, generally describing any image with a field of view greater than 100º, and then eventually ...


12

Pan0.net I like pan0.net most of all. It is free, fast, and makes the panoramas look impressive. It uses a Flash-based spherical panorama viewer, which you can even embed into your own site or blog. Unlike Gigapan, Panoramio and similar sites, pan0.net takes care of perspective transforms, and allows to view the panorama as if you were rotating the head in ...


12

Exposure. Contrary to the conventional wisdom I don't think you should necessarily lock exposure when shooting panoramas. Instead use a metering mode that considers the whole scene (not spot metering), or shoot manual, and get a lot of overlap between images. If you do this the exposure shouldn't vary too much between adjacent shots. The idea of locking ...


12

Don't use the camera's automatic "Easy Panorama" mode. Take the series of pictures manually and use desktop-computer software to stitch them together. This is a little more work on your part, but will be more flexible and probably yield better results anyway.


11

A good overview of the techniques for shooting this type of 360x180/equirectangular/VR panorama can be found on Eric Rougier's fromparis website. The basic process is to shoot enough images to cover the entire sphere, and then stitch them together as a panorama. Mappings Those "six shots" you're seeing are typically remapped cube faces from a full ...


11

A big reason is that it just makes getting the shot sequence consistent and accurate. In general, you're looking to keep the vertical plane level through the whole sequence and move along the horizontal plane in smooth, even, steps. A panoramic head is simply going to make that easier to do with less effort and risk of a muffed shot at all kinds of focal ...


11

If the old days you are thinking of are the late 1990s, you were probably using an "APS" camera. This is where the "APS-C" sensor size common in DSLRs today came from, but actually had three modes. The film frame size was 30.2 × 16.7 mm. When the full frame was used, this was called "APS-H" (with the "H" referring to HDTV ­— note the 16:9 aspect ratio). You ...


10

I regularly take photos of whiteboards sized 3' x 4' or larger with my cell phone camera to record meeting notes, and it produces passable results. The D90 should absolutely kick butt on this. The two factors you want to avoid are glare and motion blur. As Guffa mentioned, you want to avoid glare from ambient (room) lighting, so get into a position as ...


10

As a general rule, the stitching program should get the highest possible detail of the images, allowing it to make the best out of it. Therefore, I would not pre-process the images as it might degrade the information. However, if you have a large amount of input images, it might get difficult to work with the resulting large picture afterwards, due to your ...


9

When you shoot a panorama by only rotating the camera then you're simulating the effect of a wider field of view lens (even if you use a non-standard projection). If you move the camera then what you're trying to produce has no equivialent in reality, i.e. its not a 2D projection of a 3D scene like most photographs, it's something else all together! Because ...


9

I know this is late but I have been doing HDR panoramas that have been successful. Here is my method: I stitch first using Hugin. If I bracket say -2,0 and +2 stops I will have three sets of exposures to stitch. I first stitch the set that has the most detail because Hugin will be able to make the best set of control points from this set. Let's say the -...


9

The answer to this depends on the viewing distance. The usual rule of 300 PPI works well for close-up viewing, but even that isn't a hard-and-fast rule. What's more important is Pixels-Per-Degree (PPD), which is more representative of our eye's ability to resolve detail, and is dependent on a specific/typical viewing distance. Apple's Retina displays (...


9

Distance to the closest object Let's say the closest object from your lens is a chair at 50cm. The different shots will be very different regarding this chair. If the closest object is like 5m away the misalignment will be smaller. So you have to decide or prepare the scene or your point of view to minimize this defect. One option is to have this close ...


9

It is defenitely stitched, although I must say it's done quite well! Here are two examples I found in a minute. With the cameras they have nowadays I don't think it took very long at all. Assuming it is a few gigapixels, using a 50MP camera, you would only need about 100 pictures. With the ammount of light those can be taken in less than a minute (with ...


8

The Horizon camera rotates the lens, which is mounted in a vertical cylinder, around its nodal point. Actually the cylinder is the rotating part, and the lens turns with the cylinder. Image is projected on a film that is not on flat surface as in normal film cameras, but on a curved film plane. The film is not exposed all at once, but instead the turning ...


8

360x180 panos can be taken with a variety of gear, but they do get harder to take in certain situations. The first factor, obviously, is scene coverage. Either taking multiple shots or using multiple cameras simultaneously (as Google does), you have to cover the entire sphere. You can use specialized lenses to maximize the coverage per shot, or take more ...


8

Don't use Photoshop's Photomerge to stitch; use a more sophisticated panorama stitching package that allows for perspective correction and a variety of mappings. You also need to work on your shooting technique. The main issue here is the perspective, and the panorama's mapping. Some of the recommendations here, though, don't make a lot of sense. A tilt-...


7

This feature is now built in to the new iPhone 5, and is also available on the iPhone 4S (if you have updated to iOS6). The same feature is also built into Android devices with the (little known) panoramic feature. Camera > Settings > Shooting Mode > Panorama Short video here: http://www.youtube.com/watch?v=txwdD11sW1s


7

There's a tutorial on Panoramas.dk where the basic idea seems to be using a hanging locked measuring tape from camera to spot marked on ground with a lens cap to make sure you can hang the camera on a slanted support so that its nodal point is in exactly the same place where it was on tripod; you also have to watch out for shadows created by your support (so ...


7

Yes, that was years ago. Kodak used to make a disposable camera with an APS size film which could be shot in 3 formats, one of them a 2:1 panorama. Ironically, the APS size stuck for the majority of DSLR sensors. There are very few digital cameras for under $100 USD but none of them have a one shot panorama function or an ultra-wide lens. If you already ...


7

Instead of negative panorama you could call it a map projection of a tridimensional object (on a bidimensional plane). Similar to map making you would incur distortions of (some of) the geometrical quantities (angles, for instance). Obviously all photographies are planar projections: the difference here is that you are "surrounding" your object with a ...


7

Question: How do photographers usualy make rivers in gigapixel photos? Answer: They buy a Gigapan robot which shoots a structured panorama, i.e. a regular one in say a 5x5 grid and then use the software that came with their robot to merge the images. Having said that though, if you have such a structured layout, you could use Microsoft ICE just as well (as ...


7

They give you a completely different quality. The stitched solution can result in images that you could make 10ft long prints with. The single shot solution will be easier but will be of limited quality. Some other things to think about. - you can get a fisheye lens at some point with stitched solution and still just require a few shots. - the single shot ...


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