My equipment:

Pentax K5 & K1

Pentax MX

Sigma DP2s

Sigma DP1 Merryl

Sigma DP3 Merryl

Sigma DP0 Quattro

SMC DA* 16-50 mm f2.8

SMC DA* 50-135 f2.8

SMC DA* 60-250 f4

SMC DA 14mm f2.8

SMC DA 10-17 Fisheye

SMC DA 21 Limited f3.2

SMC DA 35 Limited Macro f2.8

SMC DA 70 Limited f2.4

SMC FA 31mm f1.8

SMC DFA 100 Macro f 2.8

Voigtländer Nokton 58 mm f1.4

Hoya PRO1 Circular Pole Filter

B+W ND 110

Lee 100 Filter System ND grad