John King wrote:
Something a bit strange about both these images, IMO.
I specifiably used the RAW test shots from the Focus Numeriqe website as they seem to have the most consistent exposure settings between cameras . I do not have an E-M5 { I am holding out for full FT support, for the lovely 50-200 SWD i recently got} though I do have the GH3 which seems to score almost identically to it. I also have the D800. So i clearly see the advantages and disadvantages of each system , with the combination of mFT and FF ticking all the boxes for me.
Completely leaving aside that base ISO for the D800 is ISO 50 (IIRC) and the base ISO for the OM-D is ISO 200 - in the first image there appears to be huge NR or sharpening applied to the OM-D image; in the second, the point of focus of the OM-D image appears to be the closest edge of the object in the lower right of the image, whereas with the D800 image the focus is on the binding of the book.
The base ISO for the D800 is 100 and using the DXO ISO method puts the E-M5 200 ISO at 107 while it measures the D800 at 74 so not much in it . The only actions taken with both files is to download from Focus Numerique , open in ACR , turn off all NR , minimal default sharpening , re sized to the same dimensions. The first image show the image detail difference.The second is to show the difference in shadow noise even at base ISO .
I am curious why you seem to be suggesting ""huge NR or sharpening"" { they had neither } and just how doing either one would result in the same appearance . NR even the very best is always at the expense of fine detail, whereas sharpening especially ""huge " sharpening typically does the opposite.
Base ISO
Can you shed any light on these observations?
The RAW files are freely available. From the Focus Numerique website. I have certainly not claimed anything is 4x better { assuming we had a an agreed on criteria on which to base the "better" calculation}. Perhaps you could shed a light on how any one could seriously expect a sensor that is almost one quarter the size to match what is considered by all professional review sites and DXO sensor testing to be the best sensor ever put in a DSLR.
DPreview D800 review conclusions
- Class-leading image resolution at 36.3 MP (with the D800E offering slightly superior resolution)
- Outstanding high ISO performance in both JPEG and Raw files
- Wide dynamic range Raw files
Imaging Resource D800 review conclusions
- Extremely high resolution
- Excellent image quality
- Excellent dynamic range
- Surprising high ISO performance
PhotographyBLOG D800 review conclusions
"On the resolution front, the Nikon D800 delivers images with a truly stunning amount of detail,"
"Raw dynamic range, tonality etc. are also excellent; just what you'd expect from a top-of-the-line camera in 2012."
And just for fun here is the DXO comparison between the D800 , E-M5 and your current camera the E-30.