D7100 High iso samples (100 to 25600)

[Rich Dykmans]

digitalman4242 wrote:

Seems like the D7100 has the same sensor as the D5200.

Nobody knows that for sure.

 

[Reilly Diefenbach]

I sure don't see whole stop.

 

[JimPearce]

DR of D5200 at ISO 6400 is DR of D7000 at ISO 3200. Not that this matters to me! Lacking your magical powers, I'll have nothing to do with ISO 6400.

 

[Imagician]

JimPearce wrote:

The 85mm f1.4 G is a highly resolving lens. dxomark tests this lens at 10 P-Mpix on a D300s, just 11 P-Mpix on a D7000. However, when we move from 12 MP to 16 MP in FX resolution inceases from 12 P-Mpix on the D3s to 15 P-Mpix on the D4. On the 24 MP D3X we're looking at 19 P-Mpix, and the D600 won't be lower. The D800? 22 P-Mpix. What we're seeing here is that as pixel density increases the relationship between pixel count and resolution falls away from 1:1.

 

[Jack Hogan]

alvix wrote:

Hi, thanks for these samples ! I would have thought we could leave the sharpness at "0" in NX2 with the removal of the AA filter , but it seems that nonetheless we need a bit of it..

Don't forget the demosaicing acts like a low pass filter too - even the 'e' can use Picture Control Sharpening of 1 in camera (right Reilly?)

 

[Jack Hogan]

Horshack wrote: At 2.133% signal, the D7000 has an SNR of 3.7db, while the D5200 at 2.289% signal has an SNR of 7.2db, and 3 db is equal to 1 stop.

Going even deeper, the 0dB intercept at ISO 6400 is at 0.582% of full scale vs 0.364% or a difference of 2/3 of a stop favoring the D5200 - keeping in mind though that 100% of full scale is at 27.7dB and 27.4 respectively at this ISO, meaning that the D7k requires 0.1 stop more light to achieve this result.

 

[coudet]

ebsilon wrote:
So the sensible thing would be to stay with the D7000 (or D90 or D300)

If better resolution is not needed.

or upgrade to 24 MP FX.

Shhhh. You can't say this on DX forums..

 

[Nexu1]

coudet wrote:

ebsilon wrote:
So the sensible thing would be to stay with the D7000 (or D90 or D300)

If better resolution is not needed.

or upgrade to 24 MP FX.

Shhhh. You can't say this on DX forums..

Well doesn't Jim Pearce's info suggest that we shouldn't expect a big resolution boost (in terms of P-Mpix anyways) from going from 16-24 MP on DX?

 

[Rich Dykmans]

Nexu1 wrote:

coudet wrote:

ebsilon wrote:
So the sensible thing would be to stay with the D7000 (or D90 or D300)

If better resolution is not needed.

or upgrade to 24 MP FX.

Shhhh. You can't say this on DX forums..

Well doesn't Jim Pearce's info suggest that we shouldn't expect a big resolution boost (in terms of P-Mpix anyways) from going from 16-24 MP on DX?

Where you'll really see the difference is when you crop. I'm looking forward to comparing files between the 7100 and my D600. After owning an 800E I can tell you the lack of an AA filter is huge, even when you're not pixel peeping.

 

[alvix]

Hi,

yes..maybe I was thinking / dreaming of foveon sharpness but looking at the bottom of this page http://imaging.nikon.com/lineup/dslr/d7100/features03.htm it seems that we have a optical filter in front of sensor ... that is not so naked as it seems ? just a thought ...

 

[Reilly Diefenbach]

Where you'll really see the difference is when you crop. I'm looking forward to comparing files between the 7100 and my D600. After owning an 800E I can tell you the lack of an AA filter is huge, even when you're not pixel peeping.

Yes, it is, as is a 50% increase in pixel count over the 16MP items. This DXO "perceived sharpness" thing has taken on an eldritch life of its own. All you have to do to see the difference in res with any decent lens is zoom in 50% on some leaves on a tree, for pity's sake.

 

[lorenzo de medici]

First I want to thank you for taking the time and effort to post these images taken with your new camera. It is very helpful and much appreciated.

I own the D7000 and the D600 and have taken thousands of photos with both cameras. I'm a pretty good amateur photographer, very good with imaging software, and I print my own images in sizes up to 16X20 with an Epson 3880 printer. So I often require very good imaging performance from my cameras and I spend many hours editing images before they are printed or published on the internet.

I have been extremely happy with the performance of the D600. For me, the D7000 is limited by sensor noise which usually prevents me from using an ISO higher than 400 on that camera. I was hoping that the D7100 would feature a substantial improvement in sensor noise.

After carefully comparing a number of NEF(RAW) images from my D7000 to your D7100 images, it appears to me that the two cameras have similar noise levels up to ISO 400. At ISO 800 and higher, the D7100 seems to have about a one stop improvement in noise compared to the D7000. I compared equal sized crops of images so that the higher MP count of the D7100 would not give it an advantage. In practical use, it obviously does.

The D7100 will be an extremely fine camera that many owners will be very happy with, just as the D7000 was. For my needs, a one stop improvement in sensor noise is less than I was hoping for.

 

[TOF guy]

Thank you for sharing.

 

[jfriend00]

PhD40 wrote:

Wow! ISO6400 is very clean. What is the ambient light looks like?

It looks very clean when it's been downsized to smaller viewing sizes on screen. Look at the 100% view of the ISO 6400 shot and I wouldn't call it "very clean". Good, but perhaps not what your post made it sound.

 

[t.c. marino]

lorenzo de medici wrote:

First I want to thank you for taking the time and effort to post these images taken with your new camera. It is very helpful and much appreciated.

I own the D7000 and the D600 and have taken thousands of photos with both cameras. I'm a pretty good amateur photographer, very good with imaging software, and I print my own images in sizes up to 16X20 with an Epson 3880 printer. So I often require very good imaging performance from my cameras and I spend many hours editing images before they are printed or published on the internet.

I have been extremely happy with the performance of the D600. For me, the D7000 is limited by sensor noise which usually prevents me from using an ISO higher than 400 on that camera. I was hoping that the D7100 would feature a substantial improvement in sensor noise.

After carefully comparing a number of NEF(RAW) images from my D7000 to your D7100 images, it appears to me that the two cameras have similar noise levels up to ISO 400. At ISO 800 and higher, the D7100 seems to have about a one stop improvement in noise compared to the D7000. I compared equal sized crops of images so that the higher MP count of the D7100 would not give it an advantage. In practical use, it obviously does.

The D7100 will be an extremely fine camera that many owners will be very happy with, just as the D7000 was. For my needs, a one stop improvement in sensor noise is less than I was hoping for.

looks promising and very encouraging..but would like to see some high iso LOW LIGHT samples..this d7100 may replace my awesome d300s.looking good

 

[rhlpetrus]

TOF guy wrote:

Thank you for sharing.

 

[rhlpetrus]

lorenzo de medici wrote:

First I want to thank you for taking the time and effort to post these images taken with your new camera. It is very helpful and much appreciated.

I own the D7000 and the D600 and have taken thousands of photos with both cameras. I'm a pretty good amateur photographer, very good with imaging software, and I print my own images in sizes up to 16X20 with an Epson 3880 printer. So I often require very good imaging performance from my cameras and I spend many hours editing images before they are printed or published on the internet.

I have been extremely happy with the performance of the D600. For me, the D7000 is limited by sensor noise which usually prevents me from using an ISO higher than 400 on that camera. I was hoping that the D7100 would feature a substantial improvement in sensor noise.

After carefully comparing a number of NEF(RAW) images from my D7000 to your D7100 images, it appears to me that the two cameras have similar noise levels up to ISO 400. At ISO 800 and higher, the D7100 seems to have about a one stop improvement in noise compared to the D7000. I compared equal sized crops of images so that the higher MP count of the D7100 would not give it an advantage. In practical use, it obviously does.

The D7100 will be an extremely fine camera that many owners will be very happy with, just as the D7000 was. For my needs, a one stop improvement in sensor noise is less than I was hoping for.

I doubt you'll see an APS-C sensor much better than these. The D7000's is still unbeatable in low ISO shadow noise (no banding) and this new sensor seem sto be the best for high ISO.

For more you need a larger sensor.

 

[NikonUserFrom2006]

I have both D7000 and D7100 and my impressions are that the D7100 is noisier than D7000 (even when downsampled). I tested only at ISO400, but I will do some test during the weekend. I really hope that I'm wrong..

 

[nikkorwatcher]

I hope somebody will soon come along with a definitive review that will tell me:

1) what noise on flesh tones or mid tones will be like on the highest real ISO (6400) compared to the competition

2) what noise is like in mixed scenes on low-light areas

From experience I find it hard to take the "Hi" settings seriously. They seem a simple push that you could do in software. Sorry that I haven't succumbed to any in-camera high iso nr processor claims. I only say what I've seen from a few bodies. If anyone can demonstrate in-camera processing for ultra-high iso that removes noise and not capture data with it I'd be impressed.

 

[starman1969]

Thanks for posting. I am very interested in getting a D7100. I won't be selling my D7000 though. That will become my backup.