Wide open (f/1.4) ; note the light fall-off; click on marked center/edge to see the details
See also f/2 f/2.8 f/4 f/8

 

 

f/2 ; light fall-off is very slight; click on marked center/edge to see the details
See also f/1.4 f/2.8 f/4 f/8

 

 

f/2.8 ; light fall-off is completely gone; click on marked center/edge to see the details
See also f/1.4 f/2 f/4 f/8

 

 

f/4 ; click on marked center/edge to see the details
See also f/1.4 f/2 f/2.8 f/8

 

f/8 ; click on marked center/edge to see the details
See also f/1.4 f/2 f/2.8 f/4

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