cv4wheeler

cv4wheeler

Joined on Mar 23, 2012

Comments

Total: 2, showing: 1 – 2
On Nikon D800 preview (1118 comments in total)
In reply to:

cv4wheeler: I just noticed the little button that allows me to see the shooting details in the comparison pages, and I must say I am a bit concerned. In the default presentation of comparison cameras (Sony, Canon, Pentax, Nikon) the Pentax is shot at F/18 whereas the other cameras are shot at F/11. None of these f/stop choices is really consistent with doing a proper review of the cameras IQ. As DPreview shows you in lens review tests, a good lens peaks in resolution somewhere about F5.6, an average lens about F/8 at most, and there is always visible degradation in IQ once you hit F/11, regardless of the lens. At F/18, the loss of sharpness can be quite profound. So why would they test these cameras at settings where resolution is bound to be subpar, especially the big 645 Pentax?

You lost me, unless this is some sort of misdirected effort to equalize the DoF between these different sized sensors, using different f/stops makes no sense. And using any f/stops above F/8 at all makes no sense.

Direct link | Posted on Mar 29, 2012 at 00:42 UTC
On Nikon D800 preview (1118 comments in total)

I just noticed the little button that allows me to see the shooting details in the comparison pages, and I must say I am a bit concerned. In the default presentation of comparison cameras (Sony, Canon, Pentax, Nikon) the Pentax is shot at F/18 whereas the other cameras are shot at F/11. None of these f/stop choices is really consistent with doing a proper review of the cameras IQ. As DPreview shows you in lens review tests, a good lens peaks in resolution somewhere about F5.6, an average lens about F/8 at most, and there is always visible degradation in IQ once you hit F/11, regardless of the lens. At F/18, the loss of sharpness can be quite profound. So why would they test these cameras at settings where resolution is bound to be subpar, especially the big 645 Pentax?

Direct link | Posted on Mar 23, 2012 at 03:33 UTC as 20th comment | 2 replies
Total: 2, showing: 1 – 2