Pentax 50mm F1.4 comparison: M, FA and DFA
81,465 views | Apr 9, 2019
Modern 50mm Shootout: Pentax D FA* 50mm, Samyang 50mm, Pentax DA* 55mm F1.4
67,343 views | Apr 3, 2019
Rokinon 8mm vs. 10mm vs. Sigma 8-16mm vs. Pentax 10-17mm Ultra-wide Showdown
235,475 views | Jun 19, 2016
Pentax 560mm F5.6 vs Sigma 500mm F4.5
81,752 views | Apr 6, 2016
Pentax DA 35mm F2.4 vs 40mm XS vs 40mm Limited
530,517 views | Jul 11, 2012
Sigma 10-20mm F3.5 vs F4.0-5.6
602,819 views | May 28, 2012
DA 12-24mm vs Sigma and Tamron 10-24mm Comparison
577,358 views | Mar 23, 2012
Tamron 90mm Macro vs Pentax 100mm WR:
466,798 views | Feb 23, 2012
DA* 16-50mm vs. Sigma and Tamron 17-50mm F2.8 Comparison
1,302,716 views | Sep 16, 2011
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