Patent: Fast prime lenses for curved image sensors
- Thread starter Canon Rumors Guy
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Can’t say I would be interested in another set of lenses, but maybe some specialty could find it worth while. Seems as though the advantages would have to be very compelling.
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Stuart
Hi, Welcome from an ePhotozine fan, & 6D user.
Why would it need a new Lens mount? Isn't the curved idea about getting wavelengths to fall more evenly at sensor edges the same physical mount will still work for the centre of the sensor.
Or could movable elements within the lens focus the light according to the body attached.
Or would curved sensors be used on APS-c bodies and in that way be a whole new smaller mount system.
Or could movable elements within the lens focus the light according to the body attached.
Or would curved sensors be used on APS-c bodies and in that way be a whole new smaller mount system.
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I'd love a trio of fixed full-frame curved sensor cameras: 24mm f/1.2, 50mm f/1.2, and 100mm f/1.2 would be my choice. The idea of curved sensors has been around for several years now, but to my knowledge the technical hurdle has been the brittleness of the silicon substrate when attempting to bend it under pneumatic or hydraulic pressure. The larger the sensor, the more likely it is to break. Hopefully Canon will find a workaround for it.
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Mmm. Two series of lenses, two series of bodies. Yes, I can see by the speed of those lenses that this would be interesting, but that just seems to be breaking the line up further.
the secret of film lenses is that they (at least, almost all of them) weren’t designed quite with a flat field in mind. Pretty close, not not completely. The problem is that film is never truly flat. The corners and edges are curled a tiny bit towards the front of the film plane. Unless you have a vacuum holder, of course. Not everyone did, did they? Mostly just specialized work, and then, usually specialized lenses. I had a copy machine in my lab for reproduction work, you know, halftone dots. Pretty critical everything matches up. So vacuum holders for the original and the four big film halftone repro. True apo flatfield f9 lenses. But otherwise, nah.
use most of those lenses on digital, and often the corners, and possibly the edges, are out. Maybe not by much, but you’ll see it.
lens design is easier if flat fields aren’t required. Hence all of those f1.0 and f1.2 lenses there.
the secret of film lenses is that they (at least, almost all of them) weren’t designed quite with a flat field in mind. Pretty close, not not completely. The problem is that film is never truly flat. The corners and edges are curled a tiny bit towards the front of the film plane. Unless you have a vacuum holder, of course. Not everyone did, did they? Mostly just specialized work, and then, usually specialized lenses. I had a copy machine in my lab for reproduction work, you know, halftone dots. Pretty critical everything matches up. So vacuum holders for the original and the four big film halftone repro. True apo flatfield f9 lenses. But otherwise, nah.
use most of those lenses on digital, and often the corners, and possibly the edges, are out. Maybe not by much, but you’ll see it.
lens design is easier if flat fields aren’t required. Hence all of those f1.0 and f1.2 lenses there.
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I guess the idea is great! probably it will be easier to reach light and the same amount to the corners as well as in the center and sharpness will also bas as good at the corners. Maybe the problem with broken pixels could be helped by extra layer between the bendable back and the sensor layer, a soft one which might help not to brake the pixels.
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To achieve the degree of curvature indicated on the sensor it would have to be formed when very hot (i.e. soft). I wonder if Canon has figured out how to do this, or if the lens patents are just a hedge against the time when someone does figure out how to make a curved sensor.
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They could just be grinding the material into the final shape before the other operations take place. After all, lens grinding is a pretty mature technology.
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That would translate to a huge use of purified silicon, not to mention a whole new lithography process to properly image on the curved surface. Theoretically possible, but not even remotely cost effective.
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It's possible you misunderstood his joke...I can't be sure whether you did or not. He's assuming the driver is a chauffeur (who probably can't afford an R5 unless he eats Ramen and has no family) and the owner of the car (not the Rolls Royce company) is in the back seat.
However, I am sure a lot of Rolls Royce owners do drive their own vehicles.
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