Pentax SLR Lens Discussion

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Thread / Thread Starter	Last Post	Replies	Views
How is F-ratio calculated? Dom543	11-05-2014 10:43 PM by promacjoe	3	854
What about an old SMC Pentax-M 40/2.8 (pancake lens) for reverse macro setup ? ( 1 2) Weevil	11-05-2014 09:59 PM by Weevil	18	1,922
DA* 55 won't focus techmulla	11-05-2014 08:16 PM by Glen	7	803
16 Need advice on my first Pentax lens ( 1 2 3) DCphotog	11-05-2014 09:53 AM by DCphotog	34	2,108
Suitable lens for bayonet photography LOBO RSA	11-05-2014 09:37 AM by LOBO RSA	3	862
Electrical contacts on Rokinon 16mm f2 for Pentax?? dcmsox2004	11-05-2014 08:47 AM by dcmsox2004	5	789
Tamron 28-75mm f/2.8 Lens vs Sigma 24-70mm f/2.8 IF EX DG HSM Lens lawjie	11-05-2014 06:52 AM by jwc77	6	1,465

Ennalyt 400 on K5 renix	11-05-2014 02:24 AM by renix	0	909
Spending Thanksgiving week in Europe, what to bring? VoiceOfReason	11-05-2014 12:54 AM by schnitzer79	2	470
Who bought what lens(es) in the recent sale? Marktax	11-04-2014 08:14 PM by monochrome	10	697
Pentax DA 18-135 WR Infrared Compatible? oxidized	11-04-2014 07:42 PM by mtux	1	1,023
Changing from DA 10-17 fisheye to Sigma 15mm Fisheye ??? kooks	11-04-2014 05:28 PM by AquaDome	8	1,685
Sigma lens SA/KPR mount....usable on Pentax KX DSLR?? pokolbinguy	11-04-2014 04:54 PM by Pentaxaholic	7	13,001
Hey, what happened to the 135 mm range teles? ( 1 2) rburgoss	11-04-2014 03:23 PM by GeneV	29	2,069
3 Experiences with TAMRON 28-75mm f2.8 XR ? ( 1 2) MetteHHH	11-04-2014 09:12 AM by narual	15	1,524
Recommended Basic Lenses ( 1 2) Matthew Roberts	11-04-2014 08:41 AM by NicoleC	25	4,310
2 Quick Question on Quick Shift jamarley	11-04-2014 07:00 AM by jamarley	12	1,006
1 If I am Mr. Pentax... ( 1 2 3) starjedi	11-04-2014 06:26 AM by Rondec	33	2,214
2 Worried about the lens scratch?? usn ret	11-04-2014 06:23 AM by sergysergy	9	809
2 If allowing 3rd party lenses in Pentax Lens Tournament ... ( 1 2) starjedi	11-04-2014 06:22 AM by ivanvernon	28	1,439
4 Got sand in my lens what to do what to do todd	11-04-2014 05:47 AM by stubyles	9	1,098
1 Complimenting my DA 18-135mm w/a telephoto ( 1 2) 6BQ5	11-04-2014 01:16 AM by gor80	24	1,649
2 Older Pentax lens 101 csa	11-03-2014 09:16 PM by csa	13	888
36 Pentax FA31mm f/1.8 Limited Vs Sigma 18-35mm f/1.8 ( 1 2 3 ... Last Page) Digitalis	11-03-2014 07:25 PM by Digitalis	113	23,148
5 Greatest Pentax lens - yet to be made! ( 1 2 3 ... Last Page) oakey1979	11-03-2014 06:13 PM by Na Horuk	56	2,671
Does size (lens elements/filter size) really matter? Vantage-Point	11-03-2014 05:31 PM by Lowell Goudge	11	996
12 How useful is a 135mm prime on APS-C? ( 1 2 3 ... Last Page) Des	11-03-2014 03:59 PM by kh1234567890	54	9,232
3 Made in Japan vs Made In Vietnam ( 1 2) hjoseph7	11-03-2014 02:11 PM by monochrome	18	3,949
1 Walkaround lens ( 1 2 3) cecanima	11-03-2014 08:35 AM by GeneV	34	2,548
first DSLR, DA vs DA L ? mikshyle	11-03-2014 07:58 AM by TER-OR	9	1,363
What should I buy? ( 1 2) Humphrey78	11-02-2014 09:47 PM by Weevil	18	1,775
2 Yes an other DA21 vs DA15mm thread ;) ( 1 2 3) sirEstragon	11-02-2014 05:35 PM by Omestes	38	3,409
Llive view (CDAF) AF problemswith SMC 40ltd Jannis	11-02-2014 04:43 PM by Jannis	2	541
Pentax 18-135mm mechanical vignetting near 100mm ( 1 2) bwDraco	11-02-2014 03:28 PM by PabloFP	19	1,411
1 21mm or 40mm or something else? ( 1 2) Outis	11-02-2014 02:39 PM by Sandy Hancock	23	1,905
2 A non-scientific comparison: 35mm 2.8 macro vs. Tamron 18-250@35mm and kit 18-55@35mm ( 1 2) mmichalak	11-02-2014 10:15 AM by LensBeginner	22	2,172
2 Sigma 17-70mm F2.8-4 Contemporary Review ( 1 2) Adam	11-02-2014 09:49 AM by edgedemon	26	5,356
9 The three things of Ricoh's lens developing which puzzle me ( 1 2 3) ogl	11-02-2014 01:14 AM by gor80	36	13,458
1 How should I check my DA 15? Paul the Sunman	11-01-2014 07:02 PM by Paul the Sunman	9	817
IR Performance on the 70 or 35 ltd? Omestes	11-01-2014 06:07 PM by Digitalis	4	760