Sample Images: Pentax 20-40mm f/2.8-4 ED Limited DC WR HD DASample Images: Pentax 20-40mm f/2.8-4 ED Limited DC WR HD DA(All images copyright Photography Online, Inc.)
Still Life tests, Pentax K-5 body (sub-frame sensor)
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VFA Target, Pentax K-5 body (sub-frame sensor)
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| 20mm f/2.8 | |
 Upper Left |  Center |
| 20mm f/8 | |
 Upper Left |  Center |
| 30mm f/3.5 | |
 Upper Left |  Center |
| 30mm f/8 | |
 Upper Left |  Center |
| 40mm f/4.0 | |
 Upper Left |  Center |
| 40mm f/8 | |
 Upper Left |  Center |