tag:blogger.com,1999:blog-19092890.post7467072734278198468..comments2024-03-28T17:41:43.970+02:00Comments on Image Sensors World: HTC Announces Ultrapixel CameraVladimir Koifmanhttp://www.blogger.com/profile/01800020176563544699noreply@blogger.comBlogger16125tag:blogger.com,1999:blog-19092890.post-78024625967706351072013-03-08T04:52:50.323+02:002013-03-08T04:52:50.323+02:00Hi, I've studied the image sensor theory recen...Hi, I've studied the image sensor theory recently. I just wonder why the pixel size is irrelevant for low light imaging and why SNR of the 'image' worsens by the larger pixel size. Doesn't the sensitivity and SNR depend linearly on the pixel size? (in more detail, SNR is proportional to square root of full-well capacity) I think the low light imaging gets better when the pixel size is large, assuming that other factors such as FF, resolution, noise-suppression technique, image processing are the same as each other.<br /><br />Is there any point that I missed? <br /> Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-19154762045081392252013-02-22T14:48:54.243+02:002013-02-22T14:48:54.243+02:00These comments about reducing camera resolution to...These comments about reducing camera resolution to make pixels bigger is just sensor techies trying to make their jobs easier. Real consumers want to zoom and crop. OK - not all the time or even most of the time. But it's like taking windshield wipers away from cars. Making pixels bigger is a step back in time. Make products better by investing in technology. This decision was risky.<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-68005613787638479572013-02-21T20:02:46.449+02:002013-02-21T20:02:46.449+02:00I am holding out for the uber pixel!I am holding out for the uber pixel!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-92210058610191554202013-02-21T10:59:28.000+02:002013-02-21T10:59:28.000+02:00Yet, it is marketing that led to the demise of the...Yet, it is marketing that led to the demise of the technologically superior plasma displays over LED displaysAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-30476129226431434162013-02-20T20:25:52.433+02:002013-02-20T20:25:52.433+02:00Does not fit to HTC description saying the sensor ...Does not fit to HTC description saying the sensor is BSI. Invision's one is closer to FSI.Vladimir Koifmanhttps://www.blogger.com/profile/01800020176563544699noreply@blogger.comtag:blogger.com,1999:blog-19092890.post-66605315335455375232013-02-20T20:06:23.015+02:002013-02-20T20:06:23.015+02:00You know the song : "Rumour has it ..."You know the song : "Rumour has it ..."Albert Theuwissennoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-51201532794538023852013-02-20T18:39:54.199+02:002013-02-20T18:39:54.199+02:00The pixel size is lagely irrelevant for low light ...The pixel size is lagely irrelevant for low light and the SNR of the *image* may be worse. The key is the light collecting are of the sensor, not the pixel.<br /><br />The real advantages are in power saving and lower processing requirements. There may be less crosstalk, though I'm not sure if it is much of an issue with 1.4 µm pixels. Other than that it is an inferior solution.<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-41204653811628448312013-02-20T18:38:59.239+02:002013-02-20T18:38:59.239+02:00Rumor says that this sensor comes from InVisage!!!...Rumor says that this sensor comes from InVisage!!!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-27850419881645772882013-02-20T18:36:19.380+02:002013-02-20T18:36:19.380+02:00Even 3-4um pixel is OK for me. 8MP or more is mean...Even 3-4um pixel is OK for me. 8MP or more is meaningless!!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-42988288353980620222013-02-20T18:11:23.466+02:002013-02-20T18:11:23.466+02:00Finally! Don't need to be an expert to underst...Finally! Don't need to be an expert to understand that bigger pixel, better image. Also, 4MP is more than enough for 99% of the applications the phone pics are used. OK, less crop possibilities, a bit worst image processing BUT less storage size needed, lower power, better low light, better SNR!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-10736965809497527902013-02-20T17:56:00.858+02:002013-02-20T17:56:00.858+02:00Looking at the specs I'm wondering whether the...Looking at the specs I'm wondering whether there is anything really "special" about that sensor.<br />Wouldn't it be rather cheap to order a 4MP 2.0um sensor if you commit on a proper volume?<br /><br />For a sensor manufacturer it must be a easy task with good yield, considering the low density.<br /><br />Just wondering, any opinions on that?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-3137221242275321562013-02-20T17:37:04.245+02:002013-02-20T17:37:04.245+02:00I'd bet real money the sensor is from Omnivisi...I'd bet real money the sensor is from Omnivision. Likely to be the OV4688Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-75874832080985209642013-02-20T17:09:01.769+02:002013-02-20T17:09:01.769+02:00I spent some time comparing the two images and I h...I spent some time comparing the two images and I have to say that the lighting seems to be quite different between the two. I think the HTC image uses a flash if you look carefully at the differences in shadows. <br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-35027638010474882602013-02-20T16:50:00.990+02:002013-02-20T16:50:00.990+02:00Surely the small pixel count is there to keep the ...Surely the small pixel count is there to keep the camera size reasonable, the sensor is 1/3inch so roughly the same as Apple/Samsung smartphones, any bigger and the focal length will be too big to comfortably fit in a phone.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-82413625433006509372013-02-20T10:46:32.306+02:002013-02-20T10:46:32.306+02:00I just hate marketing - pixel properties and whole...I just hate marketing - pixel properties and whole sensor properties are interchanged feely even though they are very different from each other.<br /><br />I imagine the small pixel count is there to allow for fast enough processing of all the operation functions.<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-19092890.post-69441867489045275262013-02-20T02:48:47.437+02:002013-02-20T02:48:47.437+02:00Anyone know who help hTC manufacture its image sen...Anyone know who help hTC manufacture its image sensor? I have a bold prediction that could be Toshiba since they have done same kind of image sensor for Nokia, yet it is still just a guess.<br />BobAnonymousnoreply@blogger.com