ABOUT - WHAT IS A 'BOKEH PANO'?
A 'Pano' (Panorama) is a composite image stitched together from multiple frames. The 'Bokeh' aspect relates to those frames being taken on a longer focal length lens with a big aperture and used wide open. This emulates an impossibly fast, wide-angle lens (or a camera with a significantly larger sensor). Here's a diagram to help illustrate the technique and why it's better than an actual fast, wide-angle lens:
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35mm f/1.4
SINGLE IMAGE
Crazy aperture values are cool, but this is all about how much light comes in to your lens. Don't get hung up on F-stops, what we're interested in is the focal length divided by the F-Stop. This is what gives us the really interesting figure - the aperture diameter. As you can see from this image a fast 85mm lens can let in nearly triple the amount of light compared to a fast 35mm:
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If you take more images and stitch them together to get an equivalent to an even wider image then the difference is even greater. This next shot compares a 25mm f/2 lens to another Bokeh Pano using the 85mm f/1.2 lens:
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25mm f/2
SINGLE IMAGE
An added bonus from the resolution increase is higher ISO capability. Although both images were taken at iso 3200 (the faster 85mm needed a higher shutter speed to avoid camera shake) when viewed at the same distance the panorama is considerably less noisy.
Using an 85mm f/1.2 lens with this technique is like having that same lens on a sensor larger than medium format, or using a 35mm f/0.5 on a full frame camera. Although these values are not possible they are technically accurate and help illustrate the effects you're seeing as well as what is being emulated.
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Here's one more example comparing a 35mm lens shot at f/1.4 to a panorama from an 85mm f/1.2
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