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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 (2 viewing)
10 211
  Current Prime Lenses 
6 57
  Legacy Zoom Lenses (1 viewing)
98 845
  Legacy Prime Lenses (1 viewing)
58 364
Tamron Lenses
  Current Zoom Lenses (1 viewing)
5 301
  Current Prime Lenses (1 viewing)
1 53
  Legacy Zoom Lenses 
18 197
  Legacy Prime Lenses (1 viewing)
17 57
Tamron Adaptall Lenses
  Zoom Lenses (3 viewing)
42 178
  Prime Lenses (1 viewing)
26 169
  Adaptall Adapters 
Adapters that enable the use of Tamron Adaptall lenses on Pentax cameras.
8 12
Samsung Lenses
  Prime Lenses 
2 3
  Zoom Lenses 
6 7
Lensbaby Lenses
  Prime Lenses 
12 6
Schneider-Kreuznach Lenses
  Prime Lenses (1 viewing)
6 2
  Zoom Lenses 
4 10
Tokina Lenses
  Prime Lenses 
17 115
  Zoom Lenses (1 viewing)
58 264
Samyang Lenses
  Prime Lenses 
16 146
Vivitar Lenses
  Zoom Lenses 
39 204
  Prime Lenses (2 viewing)
56 267
Cosina Lenses
  Zoom Lenses 
11 37
  Prime Lenses (2 viewing)
22 70
Ricoh Lenses
  Prime Lenses (2 viewing)
26 114
  Zoom Lenses 
12 26
Carl Zeiss Lenses
  Prime Lenses (2 viewing)
34 155
Quantaray Lenses
  Zoom Lenses 
11 45
Russian and Zenitar Lenses
  Prime Lenses (6 viewing)
47 302
Voigtlander Lenses
  Prime Lenses 
10 74
Miscellaneous Lenses
  Zoom Lenses (5 viewing)
107 167
  Prime Lenses (10 viewing)
292 747
  Teleconverters (All Brands) (2 viewing)
40 150

Recent Products
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

Vivitar 50mm f2.0 Auto

Super Orion f=80-205mm , 1:4.5, M.C. Macro Zoom

Adaptall lens hoods (all models)
Tokina RMC ( vivitar, hoya, soligor etc) 2-ring 35-105mm f3.5 review
Tokina RMC ( vivitar, hoya, soligor etc) 2-ring 35-105mm f3.5
Tamron SP AF 90mm F/2.5 Macro 1:2 (52EP) review
Tamron SP AF 90mm F/2.5 Macro 1:2 (52EP)

Universon (Tomioka) 55mm f/1.4

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
ARSAT 30mm F3.5 review
ARSAT 30mm F3.5
Chinon - ?Tomioka 28mm f2.8 MC review
Chinon - ?Tomioka 28mm f2.8 MC
Quantaray 28-90mm 1:3.5-5.6 MC Aspherical review
Quantaray 28-90mm 1:3.5-5.6 MC Aspherical
Mamiya Sekor  /  Yashinon Tomioka 60mm f2.8 Macro review
Mamiya Sekor / Yashinon Tomioka 60mm f2.8 Macro
Carl Zeiss 85mm f1.4 Contax/Yashica review
Carl Zeiss 85mm f1.4 Contax/Yashica

Statistics
Pentax Lenses: 1,117 | Total Reviews: 5,355 | Views: 24,346,628
Users browsing the lens reviews: LazyBones, algee51, Thagomizer, laurie02 and 47 unregistered users
 
Recent Reviews
Pentax Review RSS Feed
Sigma 10-20mm F3.5 EX DC HSM Review
sg10203_5a.jpg
After about 100 photos shot with this lens I can say: -AF worked very bad, inaccurate, slow, sometimes it did not respond ... After cleaning the contacts seemed to be the same but magically began to respond perfectly, being slower than most of my screw lenses. -The sharpnes is very good in the...
Rating: 9 | Recommended: Yes Read More
Vivitar (Kiron) close/macro focusing zoom 70-150mm F3.8 Review
viv_70-150mm.jpg
I really like this lens on both film and the Pentax K1. It is sharp, the macro (close focusing function is useful, and the lens features nice colors. I paid about $20 with the matching 2x teleconverter. Given that the lens alone can be found on ebay for $10 it is a great bargain. My version did ...
Rating: 8 | Recommended: Yes Read More
Sigma 17-50mm F2.8 EX DC HSM Review
17-50nonOS.jpg
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Rating: 10 | Recommended: Yes Read More
Tamron Adaptall-2 35-70mm F3.5 CF Macro (17A) Review
tamron35-70mm-f3p5.jpg
I recently bought a K mount 105mm and this was in the box when it arrived. I put it to one side thinking I'd flog it as I already have three other zoom lenses of similar lengths. I saw it on my shelf today and thought I would play with it a little, and I loved it.
Rating: 9 | Recommended: Yes Read More
Vivitar 35-105mm f/3.5 auto zoom Review
IMG_20180206_135218_985_1_.jpg
For the price I paid it (49$ + shipping), it's quite a steal. While it's a bit soft when wide open at f/3.5, closed down to f/5.6 makes it sharper and perfectly usable for photo or video. Sure, at f/5.6 it's not as fast as other lenses, but for a fixed aperture lens, in that price range, delivering ...
Rating: 8 | Recommended: Yes Read More
Tokina 75-300mm f/4.5-5.6 AF Review
Tokina75-300AF-800px.jpg
This lens makes me question my investment in M prime lenses. In an informal test it beats the M 400. I have yet to test it against the *300 m lens.
Rating: 10 | Recommended: Yes Read More
Tamron 18-200mm F3.5-6.3 AF XR Di II LD Aspherical IF Macro Review
tamron_18-200mm_spny.jpg
I reviewed this lens when I had the Pentax K-50 and though it was very very good. This lens is even better used on my K-S1. Color, contrast, bokeh is good. Sharpness is excellent using the finder and exceptional using live view and focus peeking. It has been raining like crazy since I purchased ...
Rating: 9 | Recommended: Yes Read More
Sigma 17-50mm F2.8 EX DC HSM Review
17-50nonOS.jpg
I've owned the Tamron 17-50mm f/2.8 lens for quite a few years and it's my only other experience with a fast standard zoom on digital. I've always been pretty happy with the Tamron but longed for something better built and with quiet AF, so when I saw a copy of this Sigma for sale locally at a reas...
Rating: 9 | Recommended: Yes Read More
Tamron Adaptall-2 SP 17mm f/3.5 (51B/151B) Review
SP17_51B1.jpg
I have the 151B variant. Bought it new/old stock at a closeout auction, with a box of other stuff; I don't think it had ever been used before. Used it during January 2018 for the "Single In Challenge" - which I would encourage you to consider trying. It's a wonderful way to get to know a lens and me...
Rating: 8 | Recommended: Yes Read More
Quantaray 70-300mm F4-5.6 LD Macro 1:2 Review
Quantaray_70-300mm_1_IMGP4593.jpg
Found this lens in a thrift store. I love the fact that no one else wants Pentax mount lenses... A bonus for the purchase was that today was "Senior day" all purchases are 20% off! Had my camera with me for a project and was able to confirm the mount and functionality. Initial tests indicate this...
Rating: 9 | Recommended: Yes Read More



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