Same optical design

10-17mm F/3.5-4.5
smc Pentax-DA 10-17mm F/3.5-4.5 ED [IF] Fisheye (Schneider-KREUZNACH D-Xenogon, Samsung SA)APS-C 2005 
Tokina AT-X Fisheye 107 AF 10-17mm F/3.5-4.5 (IF) DXAPS-C 2006 
11-18mm F/4.5-5.6
Tamron SP AF 11-18mm F/4.5-5.6 Di II LD Aspherical (IF) A13APS-C 2004 
Konica Minolta AF DT 11-18mm F/4.5-5.6 (D)APS-C 2005 
Sony DT 11-18mm F/4.5-5.6 (SAL1118)APS-C 2006 
12-24mm F/4
smc Pentax-DA 12-24mm F/4 ED AL [IF] (Schneider-KREUZNACH D-Xenon, Samsung SA)APS-CPro 2005 
Tokina AT-X Pro 124 AF SD 12-24mm F/4 (IF) DXAPS-CPro 2004 
14mm F/2.8
Nikon AF Nikkor 14mm F/2.8D EDPro 2000 
Tamron SP AF 14mm F/2.8 Aspherical (IF) 69EPro 1999 
15-30mm F/2.8
HD Pentax-D FA 15-30mm F/2.8 ED SDM WRPro 2016 
Tamron SP 15-30mm F/2.8 Di VC USD A012BestPro 2014 
16-50mm F/2.8
smc Pentax-DA* 16-50mm F/2.8 ED AL [IF] SDMAPS-CBestPro 2007 
Tokina AT-X Pro 165 AF SD 16-50mm F/2.8 (IF) DXAPS-CPro 2006 
17-35mm F/2.8-4
Tamron SP AF 17-35mm F/2.8-4 Di LD Aspherical (IF) A05Pro 2003 
Konica Minolta AF 17-35mm F/2.8-4 (D)Pro 2004 
18-200mm F/3.5-6.3
Tamron AF 18-200mm F/3.5-6.3 XR Di II LD Aspherical (IF) Macro A14APS-C 2004 
Konica Minolta AF DT 18-200mm F/3.5-6.3 (D)APS-C 2005 
Sony DT 18-200mm F/3.5-6.3 (SAL18200)APS-C 2006 
18-200mm F/3.5-6.3
Tamron 18-200mm F/3.5-6.3 Di III VC B011APS-C 2014 
Sony E 18-200mm F/3.5-6.3 OSS LE (SEL18200LE)APS-C 2012 
18-250mm F/3.5-6.3
smc Pentax-DA 18-250mm F/3.5-6.3 ED AL [IF] (Samsung SA)APS-C 2007 
Tamron AF 18-250mm F/3.5-6.3 Di II LD Aspherical (IF) Macro A18APS-C 2007 
Sony DT 18-250mm F/3.5-6.3 (SAL18250)APS-C 2007 
18-270mm F/3.5-6.3
smc Pentax-DA 18-270mm F/3.5-6.3 ED SDMAPS-CBest 2012 
Tamron AF 18-270mm F/3.5-6.3 Di II VC PZD B008APS-C 2010 
24-70mm F/2.8
HD Pentax-D FA 24-70mm F/2.8 ED SDM WRBestPro 2015 
Tamron SP AF 24-70mm F/2.8 Di VC USD A007BestPro 2012 
28-75mm F/2.8
Tamron SP AF 28-75mm F/2.8 XR Di LD Aspherical (IF) Macro A09BestPro 2003 
Konica Minolta AF 28-75mm F/2.8 (D)Pro 2004 
Sony 28-75mm F/2.8 SAM (SAL2875)Pro 2009 
28-105mm F/4-5.6
smc Pentax-FA 28-105mm F/4-5.6 [IF] 1999 
Tamron AF 28-105mm F/4-5.6 (IF) 179D 1998 
28-200mm F/3.8-5.6
smc Pentax-FA 28-200mm F/3.8-5.6 AL [IF] 1996 
Tamron AF 28-200mm F/3.8-5.6 LD Aspherical (IF) 171D, 271D, 571D 1996 
35mm F/2.8 MACRO
smc Pentax-DA 35mm F/2.8 Macro LimitedAPS-C1:1 2008 
Tokina AT-X Pro Macro M35 AF 35mm F/2.8 DXAPS-C1:1 2007 
50mm F/1.4
HD Pentax-D FA* 50mm F/1.4 SDM AWPro 2018 
Tokina opera 50mm F/1.4 FFBestPro 2018 
50-135mm F/2.8
smc Pentax-DA* 50-135mm F/2.8 ED [IF] SDMAPS-C 2007 
Tokina AT-X Pro 535 AF SD 50-135mm F/2.8 (IF) DXAPS-C 2006 
55-200mm F/4-5.6
Tamron AF 55-200mm F/4-5.6 Di II LD Macro A15APS-C 2005 
Sony DT 55-200mm F/4-5.6 (SAL55200)APS-C 2007 
70-200mm F/2.8
Tamron SP 70-200mm F/2.8 Di VC USD A009Pro 2012 
HD Pentax-D FA* 70-200mm F/2.8 ED DC AWBestPro 2015 
70-210mm F/4
Tamron 70-210mm F/4 Di VC USD A034BestPro 2018 
HD Pentax-D FA 70-210mm F/4 ED SDM WRBestPro 2020 
70-300mm F/4-5.6
Tamron AF 70-300mm F/4-5.6 LD 372D 1996 
Nikon AF Zoom-Nikkor 70-300mm F/4-5.6D ED 1998 
100mm F/2.8 MACRO
smc Pentax-D FA 100mm F/2.8 Macro (Schneider-KREUZNACH D-Xenon)1:1Pro 2004 
Tokina AT-X Pro Macro M100 AF 100mm F/2.8 D1:1Pro 2005 

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Alternatives

The ones that are highlighted in blue are the recommended lenses.

The ones that are crossed out are the lenses from manufacturers who do not provide adequate quality control. Usually, one doesn't want to purchase them.

Alternatives

The ones that are crossed out are the lenses from manufacturers who do not provide adequate quality control. Usually, one doesn't want to purchase them.

Alternatives

The ones that are highlighted in blue are the recommended lenses.