Talk:Active-pixel sensor

message: I will be adding much more to this in the coming days.  I recently completed a masters thesis on this matter and would like to contribute.
--MattCohen 23:23, 8 May 2006 (UTC)
replies: text: It should say that JPL validated the concept of intrapixel charge transfer APS - now the basis of nearly all modern CMOS APS devices. See below - EF 4/08  —Preceding unsigned comment added by 121.136.51.229 (talk) 22:02, 21 April 2008 (UTC)

text: I've added this to the page, though someone with deeper subject knowledge needs to review my changes! - David Gerard 12:17, 21 September 2006 (UTC)

message: This article is out of date and misleading.  Even Nikon has finally switched over to CMOS because of better performance, particularly in terms of noise.  —Preceding unsigned comment added by 76.169.182.3 (talk) 03:37, 1 September 2007 (UTC)
replies: text: Give us a reference so we can know what to change. Dicklyon 04:55, 1 September 2007 (UTC)
replies: text: This link has recent press releases (too many to list individually!) announcing new DSLRs by both Canon (which has long used CMOS sensors in its EOS line), and Nikon (which is using CMOS in all of its newest professional and semi-professional cameras): http://www.dpreview.com/news/0708/archive.asp.  The relevant models are the Canon 1Ds III and 40D, and the Nikon D3 and D300.  It also has a press release about a new Sony CMOS DSLR sensor (which are widely used by most non-Canon DSLR manufacturers).  CMOS on the high end has clearly gained the upper hand.  Test results on DPR also clearly show CMOS's general superiority to CCD at high ISO (amplification), indicative of their low noise performance.  The latest Nikon goes up to ISO 25600! (Though it remains to be seen how successfully.) While some recent Nikon CCD-based cameras are competitive in terms of noise, this is generally at the cost of image detail--that is, noise reduction is being used to blur away noise, rather than the sensor itself being intrinsically lower noise (and Canon CMOS-based cameras have generally still won at the highest ISOs).  DPR is a very reputable site; it was recently purchased by Amazon.com, has been referred to in mainstream magazines like Popular Photography, etc. --69.227.70.158 16:53, 3 September 2007 (UTC)
replies: text: I agree it's a reliable site, but you haven't pointed out precisely enough what they've said that you want to add to the article.  Feel free to add anything that's sourced there; here is their new search for active pixel (not all of which are used in the sense of this article). Dicklyon 17:07, 3 September 2007 (UTC)
replies: text: Now that's odd... What I'd heard so far from other sources and had expected to see here in the "comparison to CCD" section was that CMOS sensors had lower overall light sensitivity, and therefore would create a comparitively grainier picture with poorer colour reproduction in low light conditions - as seen with typical cheap webcams and most types of phone camera when used indoors of an evening. Almost looking as if you're using a higher ISO even when the camera itself is set to the same apparent one (and exposure), or silently using high ISO settings in those cases where such things are not exposed to or adjustable by the user (and going up to 25600? ouch. that's got to be either an insanely sensitive chip or Nikon allowing compromise to work around some horrendous shooting conditions). A more expensive webcam that I have bought and used for work purposes happily touts itself as using a "real CCD" for just these purposes, and it certainly does give a better image, though whether that's down to the claimed reasons or just better optics (wider aperture, larger sensor, more precisely ground lens...) and post-processing circuitry, I cannot tell. Can we have hard, reliable sources to back things up one way or the other please, Mr CCD Thesis Man? 77.102.101.220 (talk) 01:20, 9 December 2009 (UTC)
replies: text: What you were expecting would have been true ten years ago, but these these days CCD and CMOS sensors are more comparable; sometimes the CMOS ones are better.  I don't have great sources handy, but maybe I'll look around...  Dicklyon (talk) 02:29, 9 December 2009 (UTC)
thread_title: Out of date?

message: Some info on the digital interface would be neat.— Preceding unsigned comment added by  Electron9  (talk • contribs)   12:20, 22 August 2008 (UTC)
thread_title:  Description on physical hardware interface..? 

message: Need more info on this.  It's like Passive Matrix LCD but with sensors i guess.  --69.151.62.37 (talk) 08:50, 21 July 2011 (UTC)
thread_title:  '''passive-pixel sensors''' 

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thread_title:  External links modified 

message: It seems that articles on cameras, such as Nikon D2X, link to CMOS instead of here, or more likely to the redirect CMOS sensor that links here. The CMOS article isn't very useful, though. Gah4 (talk) 23:27, 6 May 2021 (UTC)
thread_title:  [[CMOS]] and cameras 

message: It seems that there are two kinds of digital cameras, as well as I know independent of CCD or the ones described here. Ones used in more expensive cameras require a mechanical shutter in addition to whatever timing is done on chip. Ones in cheaper cameras do not need the mechanical shutter.  It seems that some with a mechanical shutter can do shorter exposures using only electronic switching, while others don't do that. It seems to me that this article would be a good place to explain this, but maybe there are other choices. Gah4 (talk) 23:30, 6 May 2021 (UTC)
thread_title:  shutters