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Welcome to the Third-Party Pentax Lens Review Database!
This database contains reviews and technical data on third-party lenses (made by Sigma, Tamron, etc.) designed for use with Pentax K-Mount DSLRs and film SLRs. In addition to being able to post lens reviews, users can also add new lenses to this database.

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In-Depth Pentax Lens Reviews

Category Lenses Reviews
Sigma Lenses
  Current Zoom Lenses (5 viewing)
10 214
  Current Prime Lenses (1 viewing)
6 58
  Legacy Zoom Lenses (8 viewing)
98 849
  Legacy Prime Lenses (2 viewing)
58 366
Tamron Lenses
  Current Zoom Lenses (1 viewing)
5 302
  Current Prime Lenses 
1 53
  Legacy Zoom Lenses (1 viewing)
18 199
  Legacy Prime Lenses (1 viewing)
17 58
Tamron Adaptall Lenses
  Zoom Lenses (4 viewing)
42 178
  Prime Lenses (6 viewing)
26 169
  Adaptall Adapters 
Adapters that enable the use of Tamron Adaptall lenses on Pentax cameras.
8 13
Samyang Lenses
  Prime Lenses (1 viewing)
16 151
Lensbaby Lenses
  Prime Lenses 
12 6
Venus Laowa Lenses
  Current Prime Lenses 
5 6
Tokina Lenses
  Prime Lenses (1 viewing)
18 118
  Zoom Lenses (3 viewing)
58 267
Samsung Lenses
  Prime Lenses 
2 3
  Zoom Lenses 
6 8
Schneider-Kreuznach Lenses
  Prime Lenses 
6 2
  Zoom Lenses 
4 10
Vivitar Lenses
  Zoom Lenses (2 viewing)
39 205
  Prime Lenses (1 viewing)
56 270
Cosina Lenses
  Zoom Lenses 
11 38
  Prime Lenses (1 viewing)
22 72
Ricoh Lenses
  Prime Lenses (3 viewing)
26 118
  Zoom Lenses 
12 29
Carl Zeiss Lenses
  Prime Lenses (1 viewing)
34 155
Quantaray Lenses
  Zoom Lenses 
11 45
Russian and Zenitar Lenses
  Prime Lenses (7 viewing)
47 303
Voigtlander Lenses
  Prime Lenses 
10 74
Miscellaneous Lenses
  Zoom Lenses (4 viewing)
108 169
  Prime Lenses (19 viewing)
291 746
  Teleconverters (All Brands) (2 viewing)
40 151

Recent Products
HERVIC-ZIVNON 135mm F2.8 TMC review
HERVIC-ZIVNON 135mm F2.8 TMC
Venus Optics Laowa 100mm F2.8 2:1 Ultra Macro APO review
Venus Optics Laowa 100mm F2.8 2:1 Ultra Macro APO
Kalimar 50mm Auto Coated MC f/1.7 review
Kalimar 50mm Auto Coated MC f/1.7
Tokyo Koki TELE-TOKINA 105mm f/2.8 review
Tokyo Koki TELE-TOKINA 105mm f/2.8
Marexar 28-200 mm F 1:3.8-5.6 CX review
Marexar 28-200 mm F 1:3.8-5.6 CX
Soligor 300mm F4.5 Tele-Auto MC review
Soligor 300mm F4.5 Tele-Auto MC
SEARS 55mm f2.8 review
SEARS 55mm f2.8
Lensbaby Burnside 35mm F2.8 review
Lensbaby Burnside 35mm F2.8
Vivitar 35-105mm f/3.5 auto zoom review
Vivitar 35-105mm f/3.5 auto zoom
Seimer 28mm 1:2.8 Macro review
Seimer 28mm 1:2.8 Macro

Most Popular Lenses
Helios 44-2 58mm F/2 review
Helios 44-2 58mm F/2
Tamron 17-50mm F2.8 SP AF XR LD Aspherical IF Di II review
Tamron 17-50mm F2.8 SP AF XR LD Aspherical IF Di II
Tamron 70-200mm F2.8 Di LD Macro review
Tamron 70-200mm F2.8 Di LD Macro
Tamron 28-75mm F2.8 AF XR Di LD Macro SP review
Tamron 28-75mm F2.8 AF XR Di LD Macro SP
Tamron SP AF 90mm F2.8 Di Macro review
Tamron SP AF 90mm F2.8 Di Macro
Sigma 10-20mm F4-5.6 EX DC J review
Sigma 10-20mm F4-5.6 EX DC J
Carl Zeiss Jena 50mm F2.8 Tessar review
Carl Zeiss Jena 50mm F2.8 Tessar
Vivitar (komine) Auto Telephoto 135mm F2.8 review
Vivitar (komine) Auto Telephoto 135mm F2.8
Tamron 70-300mm F4-5.6 AF Di LD Macro review
Tamron 70-300mm F4-5.6 AF Di LD Macro
Sigma 24mm F2.8 Super Wide II review
Sigma 24mm F2.8 Super Wide II

Random Lenses
Elicar Super Macro V-HQ 1.25:1 / 90mm F2.5 review
Elicar Super Macro V-HQ 1.25:1 / 90mm F2.5
Porst 50mm f1.7 Color REflex MC Auto review
Porst 50mm f1.7 Color REflex MC Auto
Sankyo Kohki Super-Komura Uni Auto 200mm F3.5 review
Sankyo Kohki Super-Komura Uni Auto 200mm F3.5
Samsung D-Xenon 100mm F2.8 Macro review
Samsung D-Xenon 100mm F2.8 Macro
Cosina cosinon-w ( Petri ) 28mm F2 MC review
Cosina cosinon-w ( Petri ) 28mm F2 MC

Statistics
Pentax Lenses: 1,123 | Total Reviews: 5,405 | Views: 25,225,070
Users browsing the lens reviews: sjuic, OldPentaxFan and 82 unregistered users
 
Recent Reviews
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HERVIC-ZIVNON 135mm F2.8 TMC Review
31357654_2111737208839625_5032299591723122688_n2.jpg
Rating: 9 | Recommended: Yes Read More
Rikenon (Ricoh) P 70-210mm F3.9 Review
Lens_Photo_s003.jpg
I got this new, open box for $10 and it seems pretty sharp in the macro mode. However mine seems to do poorly with CA but that could just be me not knowing how to use photo editing software really well. Still I'd recommend it if you can get it this cheap.
Rating: 7 | Recommended: Yes Read More
Tokina 90mm f2.5 AT-X Macro Review
t90.jpg
Legendary lens! Performs great on a modern full frame camera
Rating: 10 | Recommended: Yes Read More
Samyang 24mm F3.5 ED AS UMC Tilt/Shift Review
samyang-ts-24mm-lens-2.jpg
I've never owned a tilt-shift lens before this one, and of course in Pentax land we really don't have much choice besides this lens...why did I wait so long?! It is an amazing tool, and once you get over the learning curve it is a pleasure to use. You'll get results like no other lens. I've also got...
Rating: 9 | Recommended: Yes Read More
Tamron 28-75mm F2.8 AF XR Di LD Macro SP Review
tamron28-75mm.jpg
Just got this lens a few days ago so these are initial impressions, but my initial impressions are very good. It is a like-new made in Japan version. It has exceptional sharpness on the K1 throughout much of the frame. I only noticed some irritating edge softness in a couple shots at infinity at f8...
Rating: 9 | Recommended: Yes Read More
Vivitar (Komine) 90mm f2.5 or f2.8 Macro Review
IMGP0722-1k.jpg
It is a great lens, very clear and with saturated and beautiful colors. The only drawback in my copy, is the hardness of the focus in a barrel with so much travel. I recommend it. https://fa rm1.staticflick r.com/793/39669 867870_15b4fbfa b3_b.jpg https ://farm1.static flickr.com/883/ 39669...
Rating: 9 | Recommended: Yes Read More
Image/Makinon Auto Zoom 80-200mm F/4.5 Macro 1:4 Review
1664.jpg
I owned this lens in the early eighties and it was the worst lens I ever owned. It is definitely not worth the money, even if you paid only 1$. The images lacked in all terms of quality. And in comparison with my Vivitar 135 f:2.8 I measured out that wide open the aperture was not 4.5 but more about...
Rating: 2 | Recommended: No Read More
Sigma 70-300mm F4-5.6 DG Macro Review
Sigma70-300mm.jpg
I had all but written of this lens that I have had for years, but as I moved to the full-frame Pentax K-1 Mark II body, I decided to give it another shot. It was pleasantly surprising how well quality turned out compared to the low price and large range of this lens. Great value under perfect condit...
Rating: 9 | Recommended: Yes Read More
2x Macro Focusing Teleconverter: Vivitar, KAX, Telemore...et al Review
vivitar_2xteleconverter.jpg
Konverter MC7 (without pins) used with a Vivitar 90mm 2.8 Macro Lens. https: //www.pentaxfor ums.com/userrev iews/vivitar-90 mm-f2-8-macro.h tml
Rating: 8 | Recommended: Yes Read More
Samyang ( Opteka, pro-Optics etc) 500mm F6.3 DX Review
Samyang_500mm-F6_3_DX_Mirror_Lens.jpg
Mirror lenses get a bad rap - yes, they have drawbacks, but they aren't meant to be substitutes for equivalent focal length refracting lenses. There is no way for a $100 lens to outperform a $1,500+ zoom or prime lens. If you don't need 'professional' quality, they are entirely viable. Most of th...
Rating: 9 | Recommended: Yes Read More



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