The whole question of lens sharpness...

Started Jun 12, 2013 | Discussions thread
unknown member
(unknown member)
Like?
Re: The whole question of lens sharpness...
In reply to looper1234, Jun 15, 2013

looper1234 wrote:

Basalite wrote:

There is nothing "vague" about the definition of sharpness.

it's vague because it is not quantified in a universally accepted way, DxOmark did the best job they could by introducing standardized test methods and the principle, "perceptual mpx"

but these type of quantification are a far cry from what one would consider workable in the world of science.

one should consider an entity defined if it can be presented in vector or scalar form with SI units. pMp is a good unit for sharpness only if the tests used to generate these quantities are perfect and its results free from all outside influence.

the concept of sharpness cannot free itself from these constraints because it is too complex a principle, and the only way to quantify it is to do what Dxomark did, to standardized and simplify it to a form of resolution.

Determining sharpness is as simple as looking at something, assuming you have good vision to begin with. You are grossly over-thinking the subject, as a lot of modern day "photographers" like to do in our digital age.

Reply   Reply with quote   Complain
Post (hide subjects)Posted by
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow