http://www.metabones.com
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Just received my Metabones Speed Booster.
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In case you have not heard of this nice little gem, it moves the lens closer to the sensor. You can use full frame lenses on a cropped sensor camera. There are two very nice results: You get a wider lens and you get a lower f stop. This is the reverse of a teleconverter. There is an optical element in the adapter.
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Below is my NEX-7 (cropped sensor) with the Tokina 10-17 lens.
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11mm:
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This projection will allow me to use this camera/lens on my monopod, tilted up 5 degrees, 4 pictures around + hand held Nadir. I can ditch the big, clunky and expensive Sigma 8mm in favor of the smaller, handier and expensive shaved Tokina 10-17
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13.5mm:
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Using the same camera/lens I can then move over to my tripod and shoot 6 around + Zenith + Nadir.
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One camera/lens, two different ways to capture the pano.
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Now I just have to figure out the clamping system. The NN lens ring clamp for this lens does not allow adjustment to the zoom. Back to my machine shop for some more fun.
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If you are interested in the RAW images, send me a private email and I will send you the link.