Which organism has the sharpest vision in terms of distance and spectrum. Please propose any other useful measure.

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    $\begingroup$ You might also want to consider field of vision and acuity. $\endgroup$ – Rory M Feb 14 '12 at 12:04

This paper suggests that bats have a comparatively high depth of focus.

It's believed that butterflies (depending on species) have the widest visual spectrum.

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  • $\begingroup$ Don't hawks have exceptional range? $\endgroup$ – Gabriel Fair Mar 25 '12 at 18:33
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    $\begingroup$ Birds of prey - hawks, falcons, eagles, vultures - along with some owls all have exceptional vision. $\endgroup$ – Larry_Parnell Mar 26 '12 at 12:36
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    $\begingroup$ I thought bats were blind. $\endgroup$ – VanJeer Jul 10 '13 at 6:28
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    $\begingroup$ How about the Mantis Shrimp? $\endgroup$ – SQB Oct 2 '14 at 11:37

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