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Phase One Images for Download

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Hi,

 

I found a couple of images available for download from Phase One which illustrate the advantages of the P 65+ over some DSLRs pretty well. The download link is here .

 

The files are in some kind of Phase One proprietary format, so you need Capture One to open them. I downloaded a tryout of the latest one. It is possible to export the files as DNG. I'm using Lightroom 3 mostly so I exported the files as DNG.

 

There are three sets of image demonstrating different aspects. The test images are reasonably well done, even if we always know that we could do it better ;-)

 

Bridge

The first image is a bridge, probably in Sydney with the famous Opera House in the background. This is a landscape image. It's shot with a P65 with 28 mm lens and a Canon 1DsIII using the 17-40/4 L lens.

 

Observations:

 

  • Both lenses have an awful lot of lateral chromatic aberration, but Capture One cleans up this nicely on both lenses.
  • Lightroom 3 has a lens profile for the 17-40/4 but not fpr the Phase One Lens
  • Lightroom get white balance on the DNG from Phase One P65 awfuly wrong
  • I'd say that the advantage in DR that MFDBs are supposed to have is very much evident in these two image. The Phase one image is much cleaner in details under the bridge.
  • The difference in sharpness is very obvious.

 

In all, I'd say that this image illustrates the advantages of MFDBs over the Canon 1DsIII that Michael, Mark Dubovoy and others  claim to exist quite clearly.

 

Outdoor portrait

The outdoor portrait illustrates a shooting situation where a very short depth of field is strived for. It's shot with Phase One using an 80/2.8 lens at maximum aperture and a Nikon D700 using a 50/1.8 at full aperture. The Nikon image lacks sharpness, probably because the 50/1.8 lens is not sharp at max aperture. Most large aperture lenses are not very usable fully open.
The Phase image is great and the DSLR image ugly, mostly depending on choice of lens.
(I'm somewhat critical of this test)

Indoor Portrait

The same equipment is used as in the outdoor image, but the 50/1.8 is stopped down to f/2.8. The images have about the same resolution as pixel binning is used on the Phase One.

 

Interestingly enough the Phase image is quite awful in Phase One Capture One, becuase of excessive noise reduction. In this case I much prefer my own image processing parameters in Lightroom. In my view the Nikon image may be better in this case.

 

Summary of observations

I'd suggest that the "Bridge image" clearly demonstrates the advantages gained with the larger format sensor which also has a lot of more pixels.
The outdoor portrait comaprisen is in part spoiled by a bad lens, but I guess that kind of performance is quite typical of a normal lens.
The indoor portrait indicates the advantage of the Nikon at low ISO.

Final comments

A good and honest comparison shoot. It's a pity that the Nikon D3X was not included. It seems to me that Canon may be slightly behind in DR and low light performance.
I recommend anyone interested to download the files and see for her/his own.
Erik
Last Updated on Sunday, 19 September 2010 14:10  

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