If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
m4/3rds matches common APS on ISO noise
On 14/09/2015 14:42, RichA wrote:
The new Olympus E-M10II matches and perhaps just very slightly improves upon the noise shown by a D7200 Nikon. Both however are still noisier than Samsung's NX-1 with its BSI sensor. You think so? You don't think that the fact that the Olympus camera needed more than 1/2 stop greater exposure time to get the same exposure at f5.6 with the same studio lighting on DPReview's test has some bearing on the result that you think you're seeing? |
#2
|
|||
|
|||
m4/3rds matches common APS on ISO noise
In article , Me
wrote: On 14/09/2015 14:42, RichA wrote: The new Olympus E-M10II matches and perhaps just very slightly improves upon the noise shown by a D7200 Nikon. Both however are still noisier than Samsung's NX-1 with its BSI sensor. You think so? You don't think that the fact that the Olympus camera needed more than 1/2 stop greater exposure time to get the same exposure at f5.6 with the same studio lighting on DPReview's test has some bearing on the result that you think you're seeing? And the Nikon has twice the sensor area... Good call. Bigger is better! ;-) -- teleportation kills |
#3
|
|||
|
|||
m4/3rds matches common APS on ISO noise
On 16/09/2015 16:46, RichA wrote:
On Monday, 14 September 2015 01:08:31 UTC-4, Me wrote: On 14/09/2015 14:42, RichA wrote: The new Olympus E-M10II matches and perhaps just very slightly improves upon the noise shown by a D7200 Nikon. Both however are still noisier than Samsung's NX-1 with its BSI sensor. You think so? You don't think that the fact that the Olympus camera needed more than 1/2 stop greater exposure time to get the same exposure at f5.6 with the same studio lighting on DPReview's test has some bearing on the result that you think you're seeing? Are you talking about the -0.33 stop exposure bias value in the D7200 shot? No - exposure bias is just a metering setting. I'm talking about how when set at ISO 200 and f5.6 under controlled lighting, the Olympus camera needed an exposure time of 1/60th to achieve an approximately equivalent exposure. It looks like ISO 200 on that Olympus camera is overstated. The D7200, Canon 7D2 needed 1/100. People like you - using things like DPReview "comparison tool" without looking at the full picture only encourage companies like Fuji and Olympus to push the boundaries - in overstating ISO. By the way, analysis of Samsung's NX1 raw files show that signal to noise ratios at all settings are lower (by about 1/2 stop) than the D7200. The NX1 is noisier than the D7200 - but it's not bad, about equivalent to a D7000 from a few years ago, also with similar low read noise / high base ISO dynamic range. If there's an advantage shown by BSI, then perhaps it might be to do with on-chip circuits required to achieve the extremely fast readout speeds - in other words perhaps if the same circuits were on an equivalent FSI sensor, an advantage would be shown. That's hypothetical, it's probably fair to accept what Samsung say, but it's demonstrably not as efficient as the D7200 for noise performance at any ISO. |
#4
|
|||
|
|||
m4/3rds matches common APS on ISO noise
On 17/09/2015 17:42, RichA wrote:
On Wednesday, 16 September 2015 19:10:22 UTC-4, Me wrote: On 16/09/2015 16:46, RichA wrote: On Monday, 14 September 2015 01:08:31 UTC-4, Me wrote: On 14/09/2015 14:42, RichA wrote: The new Olympus E-M10II matches and perhaps just very slightly improves upon the noise shown by a D7200 Nikon. Both however are still noisier than Samsung's NX-1 with its BSI sensor. You think so? You don't think that the fact that the Olympus camera needed more than 1/2 stop greater exposure time to get the same exposure at f5.6 with the same studio lighting on DPReview's test has some bearing on the result that you think you're seeing? Are you talking about the -0.33 stop exposure bias value in the D7200 shot? No - exposure bias is just a metering setting. I'm talking about how when set at ISO 200 and f5.6 under controlled lighting, the Olympus camera needed an exposure time of 1/60th to achieve an approximately equivalent exposure. It looks like ISO 200 on that Olympus camera is overstated. Yes, I didn't look at that. I was looking for visible noise so I looked at 1600 ISO. The exposures for the Nikon and the Olympus were identical. What this really means is that perhaps Nikon could release a FF camera with a higher megapixel count, like at least 64mp or 80mp for those who don't care if there is visible noise above 800 ISO. http://i.imgur.com/inWVi9g.png When I looked at ISO 1600, that's what I saw. Compared to the D7200, the u4/3 looks lousy. |
#5
|
|||
|
|||
m4/3rds matches common APS on ISO noise
On 17/09/2015 21:36, Rich A wrote:
On Thursday, September 17, 2015 at 2:54:35 AM UTC-4, Me wrote: On 17/09/2015 17:42, RichA wrote: On Wednesday, 16 September 2015 19:10:22 UTC-4, Me wrote: On 16/09/2015 16:46, RichA wrote: On Monday, 14 September 2015 01:08:31 UTC-4, Me wrote: On 14/09/2015 14:42, RichA wrote: The new Olympus E-M10II matches and perhaps just very slightly improves upon the noise shown by a D7200 Nikon. Both however are still noisier than Samsung's NX-1 with its BSI sensor. You think so? You don't think that the fact that the Olympus camera needed more than 1/2 stop greater exposure time to get the same exposure at f5.6 with the same studio lighting on DPReview's test has some bearing on the result that you think you're seeing? Are you talking about the -0.33 stop exposure bias value in the D7200 shot? No - exposure bias is just a metering setting. I'm talking about how when set at ISO 200 and f5.6 under controlled lighting, the Olympus camera needed an exposure time of 1/60th to achieve an approximately equivalent exposure. It looks like ISO 200 on that Olympus camera is overstated. Yes, I didn't look at that. I was looking for visible noise so I looked at 1600 ISO. The exposures for the Nikon and the Olympus were identical. What this really means is that perhaps Nikon could release a FF camera with a higher megapixel count, like at least 64mp or 80mp for those who don't care if there is visible noise above 800 ISO. http://i.imgur.com/inWVi9g.png When I looked at ISO 1600, that's what I saw. Compared to the D7200, the u4/3 looks lousy. Better get your eyes checked then. Why? There's significantly more detail retained on the D7200 image. I hope you're not back to your old trick of looking at noise on a "per pixel" basis. In that case they do look similar - no doubt because they've got similar pixel pitch, but it's irrelevant - in the link above the D7200 retains detail beyond 28 (00 LPH?), the OMD turns to mush and moire at about 22 - so as well as having ~25% more linear resolution, the D7200 looks better. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Hey! Now workforce matches the customers! | Rich[_6_] | Digital Photography | 0 | August 2nd 11 04:00 AM |
Hey! Now workforce matches the customers! | Rich[_6_] | Digital SLR Cameras | 0 | August 2nd 11 04:00 AM |
CHOOSE: DSLR matches top P&S pricing | SMS | Digital Photography | 4 | December 7th 08 12:20 AM |
CHOOSE: DSLR matches top P&S pricing | KadeTalbert | Digital SLR Cameras | 8 | December 5th 08 06:34 AM |
Amazing Matches Creation | [email protected] | Digital Photography | 0 | October 26th 07 12:17 PM |