Is there anybody who downloaded the example files on the phase one website and opened them in photoshop? I really was absolutely not impressed by the image quality: sure, they are large, big and heavy but i really don't like the rendering on the airplane and lack of detail in all images except the one with the girl. It must be me but really, not impressed :-)
Hi Peter,
There are a few reasons for that, explanations but not excuses.
1. The denser sampling will gradually have more difficulty resolving detail due to residual lens aberrations. No lens is perfect, and this is part of what you see, more clearly/accurately (and enlarged!). It shows as a loss of micro-contrast at best, or blur if it gets worse (e.g. in corners or near the edge of the image circle).
2. Depending on the aperture, there will be a mix of defocus and diffraction. The plane of best focus is a rather thin zone. There are restoration tools available that can improve that in postprocessing.
3. Improper sharpening. I don't want to sound like a broken record, but people really need to wake up and start using better tools for Capture sharpening. There is also no real excuse for the halos that the images show around edges, only the explanation that the wrong method and settings were used.
There may also be an effect of the Raw converter that was used, I haven't checked the EXIF data of those files yet, but e.g. Capture One Pro is able to extract higher resolution from a Raw file than e.g. Lightroom/ACR. Additionally, if there are automatic lens corrections applied, then resolution can suffer. Resampling always loses some signal strength and usually adds some artifacts. The negative effects of resampling can be minimal if proper algorithms are used.
And finally there is a psychological effect when looking at such (much more) magniified detail on low resolution displays. This all assumes that shooting technique was optimal to begin with, because subject movement, and camera shake, will show.
Having said that, there can be better quality output than some of the examples shown, so take these samples as indicative, but not as an ultimate demonstration of what is possible.
Cheers,
Bart