The whole question of lens sharpness...

Started Jun 12, 2013 | Discussions thread
Reilly Diefenbach
Senior MemberPosts: 8,245Gear list
Like?
Re: The whole question of lens sharpness...
In reply to gdourado, Jun 21, 2013

Resolution of detail is limited by the amount of pixels behind the lens.  If I shoot a D800e with a $119 50D at f8, I'm going to get more of said fine detail by far than if I shot the same scene with a Zeiss or whatever at 12 or 24MP.  The resulting file may or may not have the "pop" that a top shelf nano coated prime would have, but the detail capture will be there in spades.  Most primes and a good many zooms outresolve a D800e pretty handily over most of the frame, rendering the lens resolution chart numbers above about 3200 lwph of minor importance in my view.  It is the norm for most lenses to fall below the resolution of the body in the corners, which is of course more fodder for discussion and meaningful for landscapes, etc.  The best lenses produce a picture with better microcontrast and more vivid color, which is really what people are obsessing about on the boards in regards to "sharpness."

This is an example, taken with the D800e and the humble "kit" zoom, the 24-85VR.  At first glance, it looks like a pic that could have been taken with any camera.  But download it and zoom in a little or a lot and see what I'm talking about.  Over much of the frame, the lens has outresolved the "e" with no problem at all right down to the clearly defined stairstep pixels on the "Oregon Food Bank" trailer at 400%  The lens pulls close to 4000 lwph center to mid.

As we scan out to the sides and corners, we start to see blur caused by resolving power of the lens falling well below that of the body.  Had I shot this with the Sigma 35 or other top prime, the pic would have been tacks from edge to edge, as well as having picked up the kind of low level contrast that top quality optics can provide.

My advice to anyone on the fence would be to go for the highest MP body you can afford, then look for great cheap lenses to match if you're budget limited.  They are out there in quantity, and you won't be disappointed. 4K monitors and big flat panels are here, and the more pixels the merrier.

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