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:
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:
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:
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.
Here's one more example comparing a 35mm lens shot at f/1.4 to a panorama from an 85mm f/1.2
