Why only 4.6MP?
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From: Alfred Molon on 23 Feb 2010 13:15 Is there any reason why Sigma won't increase the pixel count in its line of Foveon DSLRs? -- Alfred Molon ------------------------------ Olympus E-series DSLRs and micro 4/3 forum at http://tech.groups.yahoo.com/group/MyOlympus/ http://myolympus.org/ photo sharing site
From: Pete Stavrakoglou on 23 Feb 2010 14:30 "Alfred Molon" <alfred_molon(a)yahoo.com> wrote in message news:MPG.25ee39c7a25e58b998c22f(a)news.supernews.com... > Is there any reason why Sigma won't increase the pixel count in its line > of Foveon DSLRs? > -- > > Alfred Molon > ------------------------------ > Olympus E-series DSLRs and micro 4/3 forum at > http://tech.groups.yahoo.com/group/MyOlympus/ > http://myolympus.org/ photo sharing site Perhaps development was slowed due to Foveon's lack of cash before Sigma bought the company. They would do well to be more concerned with better processing engine in the camera, improving AF speed, etc., rather than just going for more pixels. Check the results of DP2, you'll see that the resoution stands up well to some of the current 4/3 cameras.
From: Bruce on 23 Feb 2010 14:39 On Tue, 23 Feb 2010 19:15:58 +0100, Alfred Molon <alfred_molon(a)yahoo.com> wrote: >Is there any reason why Sigma won't increase the pixel count in its line >of Foveon DSLRs? Because the amount of image information collected is three times the nominal resolution of the sensor. At each pixel position there are red, blue and green receptors, each on a different layer. The result is that the Foveon sensor collects the same amount of information as a 14.2 MP Bayer pattern sensor. It is fairly widely recognised that the Foveon sensor delivers much the same image quality as a 12 MP Bayer sensor. Unfortunately, the low sales of Sigma DSLRs and point and shoot cameras using the Foveon sensor probably mean that there isn't enough profit for Foveon to re-invest in new products. That's a pity, as the sensor shows some real promise.
From: Pete Stavrakoglou on 23 Feb 2010 15:42 "Bruce" <docnews2011(a)gmail.com> wrote in message news:2fb8o51icabop03flo0nm1kup8gbclnbkr(a)4ax.com... > On Tue, 23 Feb 2010 19:15:58 +0100, Alfred Molon > <alfred_molon(a)yahoo.com> wrote: > >>Is there any reason why Sigma won't increase the pixel count in its line >>of Foveon DSLRs? > > > Because the amount of image information collected is three times the > nominal resolution of the sensor. At each pixel position there are > red, blue and green receptors, each on a different layer. The result > is that the Foveon sensor collects the same amount of information as a > 14.2 MP Bayer pattern sensor. > > It is fairly widely recognised that the Foveon sensor delivers much > the same image quality as a 12 MP Bayer sensor. > > Unfortunately, the low sales of Sigma DSLRs and point and shoot > cameras using the Foveon sensor probably mean that there isn't enough > profit for Foveon to re-invest in new products. That's a pity, as the > sensor shows some real promise. I don't know that I'd agree that it is up to par for a 12 MP Bayer. The resolution is good for a camera with "only" 4.6 MPs. Since Foveon is owned by Sigma, it is more like saying that there isn't profit for Sigma to re-invest in new products. That, according to Sigma, is not the case as they are working on new sensors. The sensor shows more than promise, if they can take care of the noise issue at high ISO then they will overcome a huge hurdle.
From: Bruce on 23 Feb 2010 16:45
On Tue, 23 Feb 2010 15:42:37 -0500, "Pete Stavrakoglou" <ntotrr(a)optonline.net> wrote: >"Bruce" <docnews2011(a)gmail.com> wrote: >> Because the amount of image information collected is three times the >> nominal resolution of the sensor. At each pixel position there are >> red, blue and green receptors, each on a different layer. The result >> is that the Foveon sensor collects the same amount of information as a >> 14.2 MP Bayer pattern sensor. >> >> It is fairly widely recognised that the Foveon sensor delivers much >> the same image quality as a 12 MP Bayer sensor. >> >> Unfortunately, the low sales of Sigma DSLRs and point and shoot >> cameras using the Foveon sensor probably mean that there isn't enough >> profit for Foveon to re-invest in new products. That's a pity, as the >> sensor shows some real promise. > >I don't know that I'd agree that it is up to par for a 12 MP Bayer. You're welcome to your personal opinion. I don't have an opinion because I haven't ever tested one against 12 MP opposition. But there is a general agreement among people who have done such tests that it is competitive. I'm more inclined to respect their consensus rather than the uninformed and biased personal opinion of one individual. >Since Foveon is owned >by Sigma, it is more like saying that there isn't profit for Sigma to >re-invest in new products. That, according to Sigma, is not the case as >they are working on new sensors. We have been hearing that for years now. The new sensors have yet to appear. >The sensor shows more than promise, if >they can take care of the noise issue at high ISO then they will overcome a >huge hurdle. Unlikely, given the low sales of the current Foveon sensors. |