Return of Interesting article on DxO about 5D III and D800...

Started Apr 10, 2013 | Discussions thread
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Slideshow Bob
Senior MemberPosts: 1,475
Re: Return of Interesting article on DxO about 5D III and D800...
In reply to aftab, Apr 11, 2013

aftab wrote:

qianp2k wrote:

schmegg wrote:

aftab wrote:

......... We can say A has higher resolution. Or we can say A is sharper. Same thing.

If you wish to change the definition of resolution to merely mean how sharp something appears, then I'd agree with everything you've said here.

Otherwise - no - not the same thing.

Disclaimer: I may change my mind tomorrow morning, I am drinking wine at the moment. Australian Penfolds red wines are really nice.

My experience is that a good red will make things appear much simpler than they might actually be.

PS - I'm having a red too at the moment.

I am not under influence of red at the moment but my eyes still see all A samples in aftab's post not only sharper but resolve more fine details

Yes sharpness and resolution are not the same but related just as noise and detail are related that you cannot separate them.  Nevertheless DXOMark's term sharpness is not the same one you might think about that can be processed in software.

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You should drink some too.

Talking about processing, we can make an image look sharper in the post by increasing the actuance without increasing the resolution. Resolution can't be increased in the post, but sharpness can be. But the fact remains that higher resolution will always make an image look sharper than a lower resolution image. In our perception detail = sharpness.

That sounds about right.

To me, "sharpness" has two meanings. First, "sharpness" is just the visible result an image coming close to the highest "resolution" a camera can produce, and as such, is just a byproduct of resolution. The second meaning is the artificial application of increased local contrast, IOW PP "sharpening". So you can get "sharpness" through resolution, but not vice-versa.

Resolution is what you work with at the moment of image capture. Sharpness is what you have to work with if the capture didn't come very close to maxing out your camera.

Red wine definitely results in a loss of sharpness, and for that, there is no resolution.


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