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“These viewers are able to cut the large image into hundreds of ’tiles’ which are then shown in a web viewer in much the same way as Google Maps: when you zoom, the viewer loads a new set of tiles, and it only loads the part of the image you’re looking at.
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Martin says that there are a number of good solutions to display a gigapixel photo, both paid ( KRPano and Pano2VR) and free ( Pannellum and Marzipano). “What about the sky? Well, you can shoot the sky with a wider angle lens, or you can shoot in a fixed pattern and align the photos to a grid - both can work, but I don’t recommend shooting the entire sky with an 800mm lens, that will be an exercise in insanity!” Shoot at the right time when the weather is not changing too quickly,” he adds, and says that managing all these things isn’t hard, but does take practice.
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Use an appropriate shutter speed, aperture, and ISO setting. “Shoot RAW and lock the white balance for better results. Dump the images into PTGui and click ‘align.’ If you shot everything correctly, that might be all you have to do,” he says. “Shoot overlapping photos of the whole place: a 30% overlap is fine. I also agree that you’re married to your lenses, but you are only dating your camera bodies! That said, gigapixel photography does demand a lot from a camera, and it is important to use a camera that has decent dynamic range, as you will always have sunny stuff and shadows in the same large picture.”
“For most people, a five-year-old camera will be more than ok if you put the right glass in front of it. Martin says he uses mainly Canon cameras and lenses but adds he is very much against the idea of always buying the newest equipment.
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The full resolution gigapixel photo can be seen and explored on Martin’s website. These images were then painstakingly stitched together and joined into a full 360-degree image of tremendous resolution. “This image was shot in one day from around 6,000 source images, using a high-end camera with a very long lens, mounted on a special robotic camera mount which I programmed to shoot thousands of overlapping images. The Sagrada Familia is not far away and you can see a lot of details there,” he adds. “As far as gigapixel photography goes, it is an absolutely great place to shoot from, with a perfect location in the middle of Barcelona to see a lot of interesting stuff. Moreover, there are lots of colored lights behind these window flaps, so the building is often lit with interesting colors. “So the surface texture of this skyscraper is really unusual compared to pretty much all other skyscrapers in the world, which are basically solid and uninterrupted slabs of glass from the ground to the roof. Inside those windows is a kind of one-meter wide space which has a walkway on some floors, and inside that there are the windows to the actual rooms themselves,” he says. “This building is a really strange construction, with the outer windows not being your normal sealed solid slabs of glass each window is a bunch of flaps which can open or close. Martin says this gigapixel photo was taken from the top of Torre Glories, formerly called the Torre Agbar, what he describes as a pickle-shaped building. This makes the creation of any image larger than that very difficult - and honestly, seldom worth the trouble.” “Now, you may or may not be aware that Adobe Photoshop has a file size limit of 300,000 x 300,000 pixels.
The largest image I have been able to make is a 900,000 x 450,000 size image of Prague,” he continues. “So, I have been shooting gigapixels of increasing size for a while now.
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“It took me a couple of years to make an 18-gigapixel photo of Prague from the TV Tower, which at the time was right up there with the largest photos ever made,” he recalls.