Best lenses for the 16-MPix Pentax K-5 II and K-5 IIs: Measurement data now available online

By Kevin Carter - Thursday January 30 2014

Lens Recommendations
Introduction | Sharpness comparison between Pentax K-5 IIs and K-5 II | Sharpness comparison between Pentax K-5 IIs and Pentax K-3 | Best prime lenses for the Pentax K-5 IIs | Best zoom lenses for the Pentax K-5 IIs | Best prime lenses for the Pentax K-5 II | Best zoom lenses for the Pentax K-5 II
 
Sigma 17-50mm F2.8 EX DC HSM Pentax6692012
Pentax smc PENTAX DA 16-45mm F4 ED AL335189
Pentax smc PENTAX DA Star 16-50mm F2.8 ED AL (IF) SDM7361510
Pentax smc DA 12-24mm F4.0 ED AL (IF)700159
Pentax smc PENTAX DA 18-55mm F3.5-5.6 AL II125157
Pentax smc PENTAX DA 55-300mm F4-5.8 ED475147
Tamron SP AF 28-75mm F/2.8 XR Di LD Aspherical [IF] Pentax499145
Pentax smc Pentax DA 18-250mm F3.5-6.3 ED AL [IF]   499138
Sigma 8-16mm F4.5-5.6 DC HSM Pentax699138
Sigma 18-200mm F3.5-6.3 II DC OS HSM Pentax349136
Pentax smc DA 18-270mm F3.5-6.3 ED SDM749136
Pentax smc PENTAX DA 50-200mm F4-5.6 ED261125
Tamron AF18-200mm F/3.5-6.3 XR Di-II LD ASPHERICAL (IF) MACRO Pentax64595

Sigma also does well with the 17-50mm (26-77mm equivalent) f2.8 EX DC HSM in the zoom category. It’s also well corrected and has high peak sharpness when stopped down.

Full aperture performance isn’t bad either, but it’s better at the longer end. In second place is the moderate speed Pentax smc DA 16-45mm (25-69mm equivalent) f4 ED AL a good all round performer with a useable maximum aperture.  This is followed very closely by the Pentax smc DA 16-50mm (25-77mm equivalent) f2.8 ED AL (IF) SDM in third place, but sharpness at the initial aperture is somewhat disappointing at the longer end even on the K-5 IIs.