what does this mean?


denniskee

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Oct 26, 2003
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#1
i am looking at the comparison of canon 10-22 & tokina 11-16

http://the-digital-picture.com/Revi...meraComp=474&SampleComp=0&FLIComp=1&APIComp=4

when i move in the pointer, beside seeing changes to the numbers & lines, i notice the base color of the chart (white) also changes in the tone.

for example, when set to 12mm, at f4 & f8,

1) canon 10-22,
tone for "centre" chart is lighter than the "mid-frame",
tone for "mid-frame" & "corner" is similar.

2) tokina 11-16
tone remains almost unchanged between "centre" & "mid-frame",
tone between "mid-frame" & "corner" is similar.

what does that means? can i say the light fall off of the tokina at 12mm, at both f4 & f8 is much lesser than canon?
 

night86mare

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Aug 25, 2006
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#2
you can look at vignetting numbers at photozone.de

i don't see any numbers or information on the page itself, but it looks like it could be an exposure issue.
 

night86mare

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#3
tokina 11-16



versus canon 10-22



for vignetting, looks like tokina 11-16 performs better, i guess.
 

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