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Forums > Back > Leaked Sigma 24-105mm f/4 DG OS HSM
frank
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#10
10-15-2013, 08:12 AM
Quote:The MTFs are not comparable.
 

Yes, I know. But I think the trend is comparable, e.g. borders vs center resolution/sharpness,  astigmatism, etc.

 

Even without knowing the specific definition of the manufacture's MTF, I think from the green lines in the Sigma chart it can be inferred that the astigmatism is quite pronounced at 24mm, at least wide open.
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Messages In This Thread
Leaked Sigma 24-105mm f/4 DG OS HSM - by frank - 10-14-2013, 03:46 PM
Leaked Sigma 24-105mm f/4 DG OS HSM - by youpii - 10-14-2013, 06:10 PM
Leaked Sigma 24-105mm f/4 DG OS HSM - by JJ_SO - 10-14-2013, 06:36 PM
Leaked Sigma 24-105mm f/4 DG OS HSM - by Rainer - 10-14-2013, 09:56 PM
Leaked Sigma 24-105mm f/4 DG OS HSM - by frank - 10-15-2013, 12:50 AM
Leaked Sigma 24-105mm f/4 DG OS HSM - by frank - 10-15-2013, 12:59 AM
Leaked Sigma 24-105mm f/4 DG OS HSM - by JJ_SO - 10-15-2013, 05:20 AM
Leaked Sigma 24-105mm f/4 DG OS HSM - by Klaus - 10-15-2013, 07:53 AM
Leaked Sigma 24-105mm f/4 DG OS HSM - by frank - 10-15-2013, 08:12 AM
Leaked Sigma 24-105mm f/4 DG OS HSM - by JJ_SO - 10-15-2013, 10:30 AM
Leaked Sigma 24-105mm f/4 DG OS HSM - by Guest - 10-15-2013, 07:19 PM
Leaked Sigma 24-105mm f/4 DG OS HSM - by Klaus - 10-15-2013, 09:11 PM
Leaked Sigma 24-105mm f/4 DG OS HSM - by frank - 10-16-2013, 12:54 AM
Leaked Sigma 24-105mm f/4 DG OS HSM - by A64 - 10-16-2013, 07:47 PM
Leaked Sigma 24-105mm f/4 DG OS HSM - by JJ_SO - 10-16-2013, 09:45 PM
Leaked Sigma 24-105mm f/4 DG OS HSM - by Rover - 10-17-2013, 02:12 PM
Leaked Sigma 24-105mm f/4 DG OS HSM - by JJ_SO - 10-17-2013, 02:30 PM
Leaked Sigma 24-105mm f/4 DG OS HSM - by A64 - 10-17-2013, 04:53 PM
Leaked Sigma 24-105mm f/4 DG OS HSM - by A64 - 10-17-2013, 04:57 PM
Leaked Sigma 24-105mm f/4 DG OS HSM - by JJ_SO - 10-17-2013, 05:57 PM
Leaked Sigma 24-105mm f/4 DG OS HSM - by A64 - 10-18-2013, 09:48 AM
Leaked Sigma 24-105mm f/4 DG OS HSM - by JJ_SO - 10-18-2013, 09:29 PM

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