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In-Depth Third-Party Lens Reviews

Below you will find the main index for our in-depth third-party (Sigma) Pentax lens reviews, ordered by category. For more details on how lenses are scored, please visit our review index. Enjoy!

Wide-Angle Primes

Rokinon 14mm F2.8 Lens Comparison 7.8

Telephoto Primes

Vivitar Series 1 85mm F1.4 Aspherical 8.8

Sigma 85mm F1.4 EX DG HSM   9.2

Wide-Angle Zooms

Sigma 8-16mm F4.5-5.6 DC HSM 7.6	Sigma 10-20mm F4-5.6   8.7	Sigma 10-20mm F3.5   8.8	Tamron 10-24mm   8.5
Sigma 12-24mm   9.0

Macro Primes

Tamron 90mm Macro Comparison   8.7

Standard Zooms

Tamron 17-50mm F2.8 Lens Comparison 7.7

Sigma 17-50mm F2.8 OS Lens Comparison 8.0

Sigma 17-70mm F2.8-4 OS HSM Lens Comparison 8.4

Sigma 17-70mm F2.8-4.5 Lens Comparison 8.1

Telephoto Zooms

Sigma 70-200mm F2.8 Lens Comparison 9.0

Tamron 70-200mm F2.8 Lens Comparison 8.7

Sigma 50-500mm F4.5-6.3 OS HSM 7.5

Special-Purpose

Lensbaby Composer   6.4

Lens Database & User Reviews

We also feature a lens database complete with every Sigma and Tamron lens currently in production, as well as legacy third-party lenses for Pentax. Visit the third-party Pentax lens database!