Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-10-2013, 05:41 AM   #1
Pentaxian
Clavius's Avatar

Join Date: Feb 2011
Location: De Klundert
Photos: Gallery
Posts: 4,103
Next leap: Non-bayer sensors from Sony

The rumored 54mp Sony sensor is not going to employ a classic rgb (bayer) pixel structure.

(SR5) Sony sensor revolution: First “non-Bayer” sensors coming in 2015. | sonyalpharumors

12-10-2013, 07:48 AM   #2
Site Supporter
Otis FanOtis FanOtis FanOtis FanOtis FanOtis Fan
Site Supporter
Rupert's Avatar

Join Date: Sep 2006
Location: Texas
Photos: Gallery | Albums
Posts: 25,123
So much change....so little cash!

Regards!
12-10-2013, 07:56 AM   #3
Pentaxian
Clavius's Avatar

Join Date: Feb 2011
Location: De Klundert
Photos: Gallery
Posts: 4,103
Original Poster
QuoteOriginally posted by Rupert Quote
So much change....so little cash!

Regards!
Same here, I can spend it only once. Each time I want to order something, more interesting stuff is just around the corner.
12-14-2013, 02:58 PM   #4
Pentaxian
reeftool's Avatar

Join Date: Dec 2007
Location: Upstate New York
Photos: Gallery | Albums
Posts: 8,478
I don't think this is going to end anywhere in the near future. Things were easy in the days of film. All your camera needed to do was operate the shutter and aperture. New film would work in any camera. Now, our cameras are obsolete the week after we buy them. I have now owned more digital cameras in 10 years than my previous lifetime shooting film. My Spotmatic still works.

12-14-2013, 03:11 PM   #5
Veteran Member
scratchpaddy's Avatar

Join Date: Feb 2013
Location: Phoenix
Posts: 2,360
Sigma's non-Bayer sensors are advertised as triple their actual resolution, since every pixel records each of the three colors. In reality, their resolution is about double that of a similar Bayered sensor.

If Sony is defining megapixels the same way Sigma does now, and I bet they are, this is an 18MP sensor that renders detail on par with a 36MP Bayer sensor. I wonder if they can do it without the noise issues Sigma's Foveon sensors have.
12-14-2013, 03:24 PM   #6
Veteran Member




Join Date: May 2012
Posts: 698
The real solution for a no-Bayer sensor would be a three chip sensor with a trichroic splitter (or two dichroic ones) as used in cinematographic video cameras. They are also used in some high end consumer video cameras but those have a much smaller sensor making the cost more manageable than it would be for APS-c or FF.

The only reason I can think of that that they are not already being used on stills cameras is the high cost, at least for mirrorless. For SLRs there is a probably insurmountable problem as the beam splitter leaves no space for the mirror but for mirrorless there is no such issue.

It will be interesting to see what Sony come up with though, maybe it will be on par with a three chip sensor - who knows.
12-14-2013, 07:52 PM   #7
Veteran Member
Louicio's Avatar

Join Date: Mar 2012
Location: Melbourne
Posts: 432
They are most likely just going to redesign the bayer filter to have a new pattern and use a new algorithm to create the pixels. It may improve resolution and reduce artifacts
12-15-2013, 03:31 AM   #8
Pentaxian
dosdan's Avatar

Join Date: Dec 2007
Location: Brisbane, Australia
Photos: Gallery | Albums
Posts: 1,736
QuoteOriginally posted by lister6520 Quote
The real solution for a no-Bayer sensor would be a three chip sensor with a trichroic splitter (or two dichroic ones) as used in cinematographic video cameras. They are also used in some high end consumer video cameras but those have a much smaller sensor making the cost more manageable than it would be for APS-c or FF.
I don't think the problem is just cost. More, chromatic aberration. Even 4K HD video is low res compared to a stills DSLR sensor. It's ensuring that the 3 separate sensors have the same registration. 54MP probably means 3x18MP R, G & B sensors. If it's this way, with G not being doubled, unlike in a Bayer CFA, the luminance res would end up lower than 54MP, possibly 18MP. Sensel pitch, on a FF sensor for a 18MP sensor, would be 6.9Ám. Maintaining registration, with vibration and thermal differences between the 3 sensors, would probably require a dynamic alignment system (like aligning an image stack for HDR or super-resolution).

Alternatively, you might have 13.5MP R, 27MP G & 13.5MP B. This would give you higher luminance res, but I'm not sure what funny recombination artifacts you'd get with the different sensel sizes.

Dan.

Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
sensor, sensors, sony
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bryce Bayer, Kodak scientist who created ubiquitous Bayer Filter for color digital im interested_observer Photographic Industry and Professionals 3 11-22-2012 05:04 AM
Do the new Sony CMOS sensors attract dirt? GeneV Pentax DSLR Discussion 10 08-31-2012 09:26 AM
Sony now making 4/3 sensors ElrondElensar Non-Pentax Cameras: Canon, Nikon, etc. 10 07-07-2012 02:43 PM
Sony RGBW sensor a viable alternative to RGBG (bayer array) sensors? RXrenesis8 Photographic Industry and Professionals 2 05-07-2012 02:08 PM
Sony Announces Next-generation Image Sensors joe.penn General Talk 2 01-24-2012 01:46 PM



All times are GMT -7. The time now is 04:11 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top