Stacking and Pixel Slip - the future???

Started Jul 29, 2013 | Discussions thread
brucehawsker
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Re: Stacking and Pixel Slip - the future???
In reply to john Clinch, Jul 29, 2013

john Clinch wrote:

brucehawsker wrote:

I happened to be invited to an academic think tank on the future of digital photography and thought those of you who are pushing the SX50 to the limit might be interested in stuff being looked at in the labs.

One project discussed was having triple the number of individual pixel sensors in triangular formation with one set on the current focal plane and one set just above and one set just below. Thus each time the camera fired three pictures would be taken and could be stacked in camera in various interesting ways. And a five times prototype is in construction.

I don't see the benefit. But will be less sensitive and or noisier as each pixel gets less light

The benefit is that you get three (or five) focal planes combined thus the depth of field is larger as though you had a brighter lens

Another project had similar feel but involved playing with the IS system to produce a series of pixel slipped images - where the centre of the field of view is micro slipped by the IS system in a random fashion to create a super - rapid series of images which can then be stacked to eliminate lens distortion and increase contrast capture.

No idea how this reduces lens distortion can you explain?

Every lens distorts even by a minute fraction - slipping the pixels gives say three pictures, each one with a pixel staring through a slightly different optical pathway. gives an "averaging" which reduces distortion. The stacking improves signal to noise ratio and playing with exposure at each shot gives wider contrast capture.

Of course, both of the above require super short gaps between each exposure so very fast writing to data storage as well as very fast opto electronics in the shutter

Another project involved an electronically distortable element in the lens under control of the camera's on board computer.

That does make sense

Another used fresnel technology with wavelet reconstruction to produce a highly compact light and plastic lensed 1000mm lens.

I think that Canon do a 400mm with diffractive optics. This might be the same thing

They also have 70-300mm. But never yet on a bridge camera. The lenses are currently expensive to make. But with digital printing technologies... watch this space....

Has anyone else heard of what the next big step is going to be in photography? The SX50 was mentioned A LOT as being quite ground breaking in the lens resolution in professional hands. Put a doubly sensitive sensor (or a denser sensor) with that lens and it becomes a potentially a real threat to the pro business.

Its unlikely sensors will get much more sensitive at the same size

Again, watch this speace. There are some very clever new ideas at very small micron levels

One of the academics opined that that he would sell shares in any business which made a lot of its money out of heavy glass costing more than $1000 a piece.....

Love to know what you guys are thinking?

I think lots of people like the big lens concept

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