Lens Sharpness
May 27, 2016 12:47:27 #
fstop11
Loc: Huntington Beach Ca
Question from a friend
I wonder if there is any way to assess lens sharpness with software,
as opposed to getting a bunch of expensive prints made.
I wonder if there is any way to assess lens sharpness with software,
as opposed to getting a bunch of expensive prints made.
May 27, 2016 12:50:53 #
May 27, 2016 13:12:20 #
There is more to a lens sharpness than just viewing at 100% on a computer screen. An image that looks sharp on a computer screen may very well be unsharp when printed large. If the focus was off, the subject moved slightly, the photographer moved slightly, et al, all affect sharpness... That said, sharpness isn't the panacea that many think it is. Many of the better known images from the past were not sharp. Best way to determine sharpness is thru bench testing like DxOmark does. Problem is though, that just because a lens tests well under bench tests doesn't mean that a person will be able to replicate that in real world shooting. Plus you also have sample variation within different samples of the same lens. In actuality, even making prints may not be the better way to judge a lenses "sharpness" as what I mentioned above applies to prints also, even if a tripod i used. In bench testing, methods used are much more elaborate that one could do in the field.
May 27, 2016 13:13:06 #
May 27, 2016 13:40:54 #
Screamin Scott wrote:
There is more to a lens sharpness than just viewin... (show quote)
Well that is a mouthful to end up saying nothing of importance!
."..........That said, sharpness isn't the panacea that many think it is."
That statement will all make us strive for perfection where needed !
May 27, 2016 13:54:29 #
So you are implying that you want a lens for ,let's say portraits, that shows up every imperfection of a woman's face ? I think not. The point I'm stressing is that it is dependent on the subject. Sharpness isn't necessarily what we need in all cases, yet it's something that everyone dotes on when looking for a lens. More input as to what is desired is needed before a selection can be made. I shoot a lot of macro & thus, yes, sharpness means a lot for my images, but for a Fine Arts shooter, it's importance is not as great.. <
TucsonCoyote wrote:
Well that is a mouthful to end up saying nothing of importance!
."..........That said, sharpness isn't the panacea that many think it is."
That statement will all make us strive for perfection where needed !
."..........That said, sharpness isn't the panacea that many think it is."
That statement will all make us strive for perfection where needed !
May 27, 2016 14:27:34 #
Screamin Scott wrote:
So you are implying that you want a lens for ,let'... (show quote)
Good points made...
May 27, 2016 14:59:46 #
Focus tune is the best software. If you get it get the combine package with the Lens Align also. It will save you alot of work during set up.
http://michaeltapesdesign.com/store.html
http://michaeltapesdesign.com/store.html
May 27, 2016 15:36:36 #
Screamin Scott wrote:
...Best way to determine sharpness is thru bench testing like DxOmark does...
I'm not disagreeing with you, Scott, but many times when I go to check out some lens on DxO, my research is twarted by the fact they haven't tested THAT lens yet. I think the OP was expressing a frustration many of us have felt due to the lack of some reasonable means by which UHH member "A" can 'test' the comparitive qualities (not just sharpness ) of lens "B" before shelling out the requisite $1,200 clams to buy it.
May 28, 2016 06:17:27 #
LensTip.com tests lenses in twelve different categories. I like to check their image resolution tests. Here are the charts for the Nikon 16-85mm f/3.5-5.6. The upper chart is for lens center. The lens is its sharpest when set to 30mm and f/5.6. It's resolving about 44 line pairs per millimeter there. The lower chart is for lens edge. 30mm and f/8 are the sharpest. It's resolving about 39 line pairs per millimeter there
May 28, 2016 06:29:54 #
May 28, 2016 06:56:56 #
fstop11 wrote:
Question from a friend
I wonder if there is any way to assess lens sharpness with software,
as opposed to getting a bunch of expensive prints made.
I wonder if there is any way to assess lens sharpness with software,
as opposed to getting a bunch of expensive prints made.
This site is very good -
https://www.imaging-resource.com/IMCOMP/COMPS01.HTM
And another -
http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx
May 28, 2016 07:03:43 #
PaulR01 wrote:
Focus tune is the best software. If you get it get the combine package with the Lens Align also. It will save you alot of work during set up.
http://michaeltapesdesign.com/store.html
http://michaeltapesdesign.com/store.html
Another for consideration...FoCal Pro
http://www.bhphotovideo.com/bnh/controller/home?O=&sku=1194556&gclid=CjwKEAjwg6W6BRDn6v__7vzN9QkSJAC9l9C3Ma5vbKKLon8-VqoJpZDNcYUSPiy-t1IqXgBVffppZBoC7Sjw_wcB&is=REG&ap=y&m=Y&c3api=1876%2C92051677682%2C&Q=&A=details
May 28, 2016 07:42:47 #
There is some very clever software around now for sharpening digital pics. Perhaps that will be the way to go when extreme sharpness is required - might save a packet!
May 28, 2016 08:09:16 #
wj cody
Loc: springfield illinois
fstop11 wrote:
Question from a friend
I wonder if there is any way to assess lens sharpness with software,
as opposed to getting a bunch of expensive prints made.
I wonder if there is any way to assess lens sharpness with software,
as opposed to getting a bunch of expensive prints made.
truthfully, lens "sharpness" is a red herring. it simply does not matter. all lenses, with good reputations, are "sharp" at appropriate apertures with an appropriate subject. just do not worry about it.
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.