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Author Topic: Leica's new global shutter sensor ?  (Read 567 times)

Manoli

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Leica's new global shutter sensor ?
« on: June 14, 2018, 05:11:21 AM »

48MP sensor introduced by CMOSIS

" 4.6μm pipelined 8T global shutter pixels which allow exposure during read out ... "
https://gmpphoto.blogspot.com/2018/06/48mp-sensor-introduced-by-leica-sensor.html
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kers

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Re: Leica's new global shutter sensor ?
« Reply #1 on: June 15, 2018, 05:42:18 AM »

i dont understand it is as wide as fullframe but has a 4:3 size and...costs 3800$
a not much used mixture of qualities.


« Last Edit: June 16, 2018, 07:36:18 PM by kers »
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Pieter Kers
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Chris Sanderson

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Re: Leica's new global shutter sensor ?
« Reply #2 on: June 15, 2018, 02:32:20 PM »

i dont understand it is as wide as fulframe but has a 4:3 size and...costs 3800$
a not much used mixture of qualities.
Except perhaps for high-end video capture?
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Christopher Sanderson
The Luminous-Landscape

Telecaster

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Re: Leica's new global shutter sensor ?
« Reply #3 on: June 15, 2018, 03:16:53 PM »

48mp (8K) global shutter at a 4:3 aspect ratio sounds good to me. Brings back the framing/cropping versatility of using 35mm motion picture film.

-Dave-
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Malina DZ

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Re: Leica's new global shutter sensor ?
« Reply #4 on: June 15, 2018, 04:27:05 PM »

Why Leica's? The CMV50000 sensor is produced by AMS and is available to everyone.
Here's a link to their PR: https://ams.com/-/high-resolution-high-speed-cmos-image-sensor-for-machine-vision-systems-goes-into-mass-production
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eronald

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Re: Leica's new global shutter sensor ?
« Reply #5 on: June 16, 2018, 05:24:44 PM »

48MP sensor introduced by CMOSIS

" 4.6μm pipelined 8T global shutter pixels which allow exposure during read out ... "
https://gmpphoto.blogspot.com/2018/06/48mp-sensor-introduced-by-leica-sensor.html

You have found the new iPhone sensor :)

Edmund
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shadowblade

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Re: Leica's new global shutter sensor ?
« Reply #6 on: June 16, 2018, 11:29:14 PM »

Sony also recently demonstrated this.

I would anticipate this to show up in the next generation of high-end Sony and Leica cameras, as well as those made by anyone else with the technology.

For the A9ii, it would be the logical next step, completely eliminating 'banding' issues with the electronic shutter and any movement-related readout distortions (e.g. golf clubs and helicopter blades), cementing it as a premier action camera. For the A7r4/A9r, it would also be useful, although not critical, in its role as a studio/'outdoor studio' camera, since it would completely eliminate flash sync speed as a limitation and allow even speedlights to easily overpower the sun (much easier with a 1/2000 exposure than a 1/200 exposure).

And, if the A9ii has it, everyone else will also add it in short order, if only to compete (although Leica largely exists in its own space, sustained as much by legacy and name as by actual performance).
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BJL

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Leica's new global shutter sensor? Unlikely: low DR
« Reply #7 on: June 18, 2018, 10:24:34 AM »

It is unlikely that this or any variant will be used in a still camera: its dynamic range is too low, as is the case with all global shutter sensors so far. Relatedly, note the limit to 12 bit output.
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shadowblade

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Re: Leica's new global shutter sensor? Unlikely: low DR
« Reply #8 on: June 18, 2018, 08:38:20 PM »

It is unlikely that this or any variant will be used in a still camera: its dynamic range is too low, as is the case with all global shutter sensors so far. Relatedly, note the limit to 12 bit output.

All technology is junk in its first iteration. First-generation Exmor was useless past ISO 400 or so. And now look at it.

We'll see global shitter in stills cameras sooner rather than later.
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Peter McLennan

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Re: Leica's new global shutter sensor? Unlikely: low DR
« Reply #9 on: June 18, 2018, 09:20:49 PM »

It is unlikely that this or any variant will be used in a still camera: its dynamic range is too low...

How does dynamic range in dB translate to stops of exposure latitude? 
That chip advertises about 64dB of dynamic range.

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SrMi

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BJL

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Re: Leica's new global shutter sensor? Unlikely: low DR
« Reply #11 on: Today at 05:12:55 AM »

We'll see global shutter in stills cameras sooner rather than later.
I am also hopeful about that; just not with this generation of CMOSIS sensors. For now, a major impediment is that part of each photosite is used to store electrons “away from the light” after the frame’s exposure is ended, while they await the somewhat sequential read-out. That reduces well capacity and thus DR at base ISO speed. However, that is probably no impairment to low light performance, so global shutters might arrive first in still cameras oriented to action, and with an emphasis on both still and motion capture.

To Peter McLennan: the rough conversion is 6dB per stop, so 64dB is about 11 stops.
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Manoli

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Re: Leica's new global shutter sensor ?
« Reply #12 on: Today at 08:22:44 AM »

That reduces well capacity and thus DR at base ISO speed. However, that is probably no impairment to low light performance, so global shutters might arrive first in still cameras oriented to action, and with an emphasis on both still and motion capture.

... such as the Sony A7s II replacement - short on DR but big on lowlight ISO. I doubt it's a 'might' more a question of 'when'.
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Manoli

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Re: Leica's new global shutter sensor ?
« Reply #13 on: Today at 08:24:08 AM »

You have found the new iPhone sensor :)

Good to see you back, Edmund ..

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