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Was Nikon's move to Toshiba a mistake?
On 22/02/2013 5:09 p.m., RichA wrote:
Someone on Dpreview remarked that Toshiba lacks a processing step used in the Sony sensors to remove banding. You can see it in this D7000 image in the sky, but the poster showed it very prominently in the shadows of a 200 ISO shot from a D5200. This reminds me a bit of the old Olympus CCD sensors in their original DSLR's. I don't know if the D7000 has a Toshiba sensor, or a Sony one. It's hard to say when Nikon began using them. D7000 http://www.dpreview.com/galleries/re...review-samples D5200 http://forums.dpreview.com/files/t/0...871a3627054ed9 The D7000 uses a Sony fabricated sensor, IMX071. The D7000 image is curious as the ISO setting doesn't seem to be in the exif data. I don't see banding so much as blotchy but random chroma noise, as if it was taken at high ISO. The "D5200" sample is worthless, without exif data and information about post-processing. There's certainly horizontal banding in lifted shadow areas, but there's no proof this is even from a D5200. Some base ISO D5200 raw samples might reveal if there's an issue or not. |
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Was Nikon's move to Toshiba a mistake?
On 22/02/2013 7:56 p.m., RichA wrote:
On Feb 21, 11:50 pm, Me wrote: On 22/02/2013 5:09 p.m., RichA wrote: Someone on Dpreview remarked that Toshiba lacks a processing step used in the Sony sensors to remove banding. You can see it in this D7000 image in the sky, but the poster showed it very prominently in the shadows of a 200 ISO shot from a D5200. This reminds me a bit of the old Olympus CCD sensors in their original DSLR's. I don't know if the D7000 has a Toshiba sensor, or a Sony one. It's hard to say when Nikon began using them. D7000 http://www.dpreview.com/galleries/re...735834/dsc_210... D5200 http://forums.dpreview.com/files/t/0...871a3627054ed9 The D7000 uses a Sony fabricated sensor, IMX071. The D7000 image is curious as the ISO setting doesn't seem to be in the exif data. I don't see banding so much as blotchy but random chroma noise, as if it was taken at high ISO. The "D5200" sample is worthless, without exif data and information about post-processing. There's certainly horizontal banding in lifted shadow areas, but there's no proof this is even from a D5200. Some base ISO D5200 raw samples might reveal if there's an issue or not. Despite the obvious banding, the image is actually very good. I see the EXIF data in Firefox's EXIF add-on. snip OK - I didn't look at full exif - didn't see that it was there. Imaging resource has D5200 raw files available for d/l. They're only their standard studio shots, and I can only open them in Nikon ViewNX at the moment. Anyway, I can't see any hint of banding or pattern noise in ISO 100 deep shadows pushed two stops, only the same typical random luma noise I've seen on every Nikon DSLR since the D3/300. IMO, pushing base ISO D5200 raws would be a doddle for prints any size - you can see the grain on screen, but you almost certainly wouldn't in print. So - I'm buggared if I know what the story could be with the shot in the link above. I suspect someone is trolling on DPReview - it wouldn't be the first time. On DPR's site, the converted raw D5200 samples look the same as the D600 samples, at higher ISO allowing one stop for FX (ie the D5200 ISO 800 sample looks just the same as the D600 ISO 1600 sample - as you should expect). Not just noise, but resolution, colour, everything. It's enough to make you wonder about Fx format - given the huge cost and weight penalty - unless you really need that "extra stop" (something which has always killed the wallet). I suspect most of us don't, and of those of us who think we do, most of us are probably wrong. But you can keep the D5200 with pentaprism, no AF motor etc. What you get for the extra $300 for the D7100 is a no-brainer - unless you absolutely must have an articulating screen for macro or whatever. |
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