Square sensor?

DStanic wrote in post #9206051
Check HERE.

What an interesting concept.

tkbslc wrote in post #9217433
More realistically, there are many lenses that only project a rectangle (okay, more of a rough ellipse) onto the 2:3 sensor. So it would not be able to fill an oversized square sensor.

For example, look at the rear mount of this 24-105L - its a rectangle
https://photography-on-the.net …php?p=9212262&p​ostcount=2

Yes, but that is just a mask, easily removed if the sensor were round. I know of no SLR lenses whose unmasked optical projection is not round. In fact, that's why it is called an "image circle." To be not round would require lens elements that are cylindrical in nature, like a Cinemascope lens.

The mask is put on the 24-105L, and other lenses, to inhibit extraneous reflected light from re-entering the lens. This helps to reduce flare and ghosting.

An interesting though just popped into my head. A lens with a cylindrical element could be made that would compress the image in one plane. The image could then be expanded back to normal with appropriate software. This would allow a standard DSLR to take a panoramic shot in a single click.

18 inch wafers? Damn.

I don't know what yield current manufacturing is getting. They are pretty good at doing what they do. But that large of a sensor would be pretty crazy.

Having advocated circular sensor the fancy petal hoods would have to go or be like those lighting rigs with movable flaps.

Perhaps the sensors could end up semi spherical and be deposited on the final element in a new range of lenses. Would photoshop cope!

20droger wrote in post #9217510
Yes, but that is just a mask, easily removed if the sensor were round. I know of no SLR lenses whose unmasked optical projection is not round. In fact, that's why it is called an "image circle." To be not round would require lens elements that are cylindrical in nature, like a Cinemascope lens.

The mask is put on the 24-105L, and other lenses, to inhibit extraneous reflected light from re-entering the lens. This helps to reduce flare and ghosting.

I figured the optics had to at least be round, but still I can't see Canon sending out instructions for removing lens baffles so they can use the fancy new sensor.

They would also have to start selling alternat lens hoods for each lens. Wait, I can easily see them doing THAT.

tkbslc wrote in post #9217673
I figured the optics had to at least be round, but still I can't see Canon sending out instructions for removing lens baffles so they can use the fancy new sensor.

They would also have to start selling alternat lens hoods for each lens. Wait, I can easily see them doing THAT.

And I can easily see them charging only $150 to remove baffles at the service centers (removing it yourself voids your warranty).

Long before we actually get these sensors, the lenses are going to need redesigning to cope with the higher resolution they are going to have to deliver. Canon won't need to charge us for modifying existing lenses because they will be making a fortune selling us new ones. Ah well, it's only money!