10-25-2012, 10:07 AM
Quote:their 18-135 is basically the same as the Tokina 16.5-135mm
Pentax:
13 elements in 11 groups
incl. 2 aspherical (glass molded & hybrid) + 1 ED elements
http://www.opticallimits.com/pentax/597-...18135_3556
Tokina:
15 elements in 9 groups
incl. 3 aspherical + 2 SD elements
http://www.opticallimits.com/nikon--nikk...ina16135dx