is this sharp or soft?


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htthach

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Feb 26, 2006
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dover
#1
just bought a sigma 17-70
this is the central crop 100% no edit
is this consider sharp or soft?

 

htthach

New Member
Feb 26, 2006
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dover
#3
i used 10D, format is large fine
so it is 6mpx only
 

unseen

Senior Member
Dec 14, 2004
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NTU and Wdls
#4
I find not too bad, but I can't say conclusively it's sharp.

Have a look against my 18-50 F2.8, which I consider a sharp lens, almost at the 50mm end. So that you can compare and judge for yourself to see if your lens is sharp. Yes I know, it's a badly taken photo. but.. ah well..
I can't find any central focus photos, but here's a side crop. Absolutely no editing done to either image.. Original posted just to show you how side the crop was. You can make your own conclusions ya.
Side is supposed to be softer then center right? Note though, different lighting, different handheld speeds may affect sharpness..



Original Photo..
 

lsisaxon

Senior Member
Nov 29, 2004
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#5
htthach said:
i used 10D, format is large fine
so it is 6mpx only
Then I think it's ok. If you stick with 6mp, it is ok, the lens seems to be able to resolve beyond that, but how far? we can't tell unless you use a higher pixel count. :) But judging from the image, I think 8 to 10mp should still be acceptable.
 

jnet6

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Apr 21, 2004
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#6
what F/stop are you using...
in terms of sharp, need to depends on f-stop(DOF), sharpness setting in yr cam and MP count of yr cam.
next is the lens...
 

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