15mp RAW file ISO 25600 Comparison. D4, D800E, 5D3, D600, 650D, D7000

An Exception

An Exception

An Exception

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Below are some ISO 25600 samples from various camera's. Original Raw files were downloaded from DPR, however they seem to be missing 6D & 1DX raws/reviews.
I then converted all the Nefs & CR2s into Adobe raw files (DNG) using their DNG converter software.

In DNG converter settings, I ticked the option to down-sample all the files to 15mp raws. The purpose of this is to end up with raws that have the same output resolution as each other. This will give a more accurate representation of the noise, and better simulates what you would get in the real-world if you made 'X' size prints from each of the camera's.

The raw files can be download below if you want to compare the raws in LR etc.

D4
D800E
5D3
D600
650D
D7000

Samples below @ Lightroom 4 defaults.

D4
D4-1-of-1.jpg


D800E
D800E-1-of-1.jpg


5D3
5D3-1-of-1.jpg


D600
D600-1-of-1.jpg


650D
650D-1-of-1.jpg


D7000
D7000-1-of-1.jpg
 
D4 has less "white" noise.

D800E/5D3/D600, if you shuffle them and ask me again I would not be able to tell you which is which.
 
Raymond Lin said:
D4 has less "white" noise.

D800E/5D3/D600, if you shuffle them and ask me again I would not be able to tell you which is which.
Click to expand...

Yes I would say the D4 has less 'White' noise. The grain seems a little coarser but oddly the grain itself looks a little softer to me?

With the D800E & D600 it's hard for me to tell the difference, the only tel-tale is the D800E has very slightly finer grain.
The 5D3 looks to have similar grain as the D600. I can notice a little red blotching though.
 
The DR of the D7000 is really obvious compared to the 650D.


Thing is at that ISO the tests are just not that interesting as the sensor has been pushed too far such that sensor differences are swamped by physical limitations (thee are just too few photons in the dark areas).

It is more interesting when you pull things back a bit, say ISO 6400, then you will notice some bigger differences. Also if you do things like underexpose a photo and boost in PP it is clear what shadow noises sensor suffer from, and this scenario is common when you try to protect highlights, trying to recover a photo with a failed flash, any scene with high DR which is common in landscapes, e.g. grand canyon at sunset and you want to pull back some details.
 
Yes from my use of the D800, the Nikon noise grain is a little softer than the 5D3 hence the less white noise.

There's not much in it and not something I'd base a purchase around either.

Whatever system works...
 
The 5DMKIII to me looks sharper than the others you can see the lines better as some of the others the colours seem to blend into each other
 
An Exception said:
Yes agreed, there isn't much in it. Not sure what your point is on the next bit.
Click to expand...

Downsampling is notorious for getting rid of hot pixels. Removing over half of the pixel count is bound to make things look better than they are at 36mp 100% crop. A D4 is only 16mp to start with, so thats by far the "truest" representation of ISO performance.
 
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