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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 (1 viewing)
10 247
  Current Prime Lenses 
6 70
  Legacy Zoom Lenses (5 viewing)
100 936
  Legacy Prime Lenses 
60 407
Tamron Lenses
  Current Zoom Lenses 
5 319
  Current Prime Lenses 
1 57
  Legacy Zoom Lenses (4 viewing)
22 221
  Legacy Prime Lenses (2 viewing)
19 62
Tamron Adaptall Lenses
  Zoom Lenses (3 viewing)
42 191
  Prime Lenses 
26 194
  Adaptall Adapters 
Adapters that enable the use of Tamron Adaptall lenses on Pentax cameras.
9 18
Samyang Lenses
  Prime Lenses (2 viewing)
16 186
Lensbaby Lenses
  Prime Lenses 
13 7
Venus Laowa Lenses
  Current Prime Lenses 
6 10
Tokina Lenses
  Prime Lenses 
22 142
  Zoom Lenses (1 viewing)
59 306
Samsung Lenses
  Prime Lenses 
2 3
  Zoom Lenses 
6 10
Schneider-Kreuznach Lenses
  Prime Lenses 
6 3
  Zoom Lenses 
4 10
Vivitar Lenses
  Zoom Lenses (5 viewing)
41 235
  Prime Lenses (3 viewing)
63 312
Cosina Lenses
  Zoom Lenses 
12 45
  Prime Lenses 
24 87
Ricoh Lenses
  Prime Lenses 
27 131
  Zoom Lenses (2 viewing)
14 31
Carl Zeiss Lenses
  Prime Lenses (2 viewing)
34 186
Quantaray Lenses
  Zoom Lenses 
11 47
Russian and Zenitar Lenses
  Prime Lenses (1 viewing)
50 347
Voigtlander Lenses
  Prime Lenses 
11 83
Miscellaneous Lenses
  Zoom Lenses 
121 207
  Prime Lenses (11 viewing)
342 927
  Teleconverters (All Brands) 
43 165

Recent Products
Sigma - Z 28mm f=2.8 Multi-Coated review
Sigma - Z 28mm f=2.8 Multi-Coated
Vivitar 28mm 2.8 Kino Pyramid Preset T Mount review
Vivitar 28mm 2.8 Kino Pyramid Preset T Mount
JCPenney 135mm F2.8 Coated Optics review
JCPenney 135mm F2.8 Coated Optics
Optomax 200mm F3.5 review
Optomax 200mm F3.5
Cosina 100-300mm f5.6-6.7 review
Cosina 100-300mm f5.6-6.7
Irix 45mm F1.4 Dragonfly review
Irix 45mm F1.4 Dragonfly
Ricoh XR Rikenon 200mm f4 (1981) review
Ricoh XR Rikenon 200mm f4 (1981)
Cimko (Seikanon, Beroflex, Sakar, Albinar etc) 28-80mm F3.5-4.5 MT Series MC review
Cimko (Seikanon, Beroflex, Sakar, Albinar etc) 28-80mm F3.5-4.5 MT Series MC
Tamron (Converto, Twin-Tele, Soligor) 135mm 2.8 Preset T Mount review
Tamron (Converto, Twin-Tele, Soligor) 135mm 2.8 Preset T Mount
Samyang (QTII, Beroflex, Sakar, Kalimar etc) AF 70-210mm F4-5.6 review
Samyang (QTII, Beroflex, Sakar, Kalimar etc) AF 70-210mm F4-5.6

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

Random Lenses
Panagor 135mm f2.8 PMC AUTO TELE - M42 review
Panagor 135mm f2.8 PMC AUTO TELE - M42
Tokyo Koki  tele-Tokina, ( Minetar, Mamiya, Prinz- Hanimex et al ) 400mm f6.3 preset review
Tokyo Koki tele-Tokina, ( Minetar, Mamiya, Prinz- Hanimex et al ) 400mm f6.3 preset

Universon (Tomioka) 55mm f/1.4
Tokina EL 2X review
Tokina EL 2X
Tamron Adaptall-2 SP 28-135mm f/4-4.5 (28A) review
Tamron Adaptall-2 SP 28-135mm f/4-4.5 (28A)

Statistics
Pentax Lenses: 1,227 | Total Reviews: 6,202 | Views: 33,365,883
Users browsing the lens reviews: seventysixersfan and 45 unregistered users
 
Recent Reviews
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Mamiya / Sekor 55mm F 1.4 Review
200257d1388475637-question-mamiya-55mm-f-1-4-m42-picture-mamiya_50mm_1_.jpg
I use this lens with a focal reducer. Aberrations are LESS using the RJ focal reducer from ebay seller Jin Finance. It's crisp, yet creamy. Unde r some conditions the bokeh may produce soap balls, as you can see above, but when it does not, the out of focus areas are just smooooooth. There ...
Rating: 10 | Recommended: Yes Read More
Revuenon Special / Mamiya-Sekor ( pantor ) 35 f2.8 Review
IMGP7872.jpg
This 35mm on my m4/3 camera, looks like a 70mm on a full frame camera. Wide open, it is still sharp. The corners on my copy are quite okay. When stopped down two stops, like with any 35mm or shorter is sharp across the image. But the best feature is that the colors are so nice. I had a Vivitar 35...
Rating: 8 | Recommended: Yes Read More
Jupiter-37A 135mm f/3.5 Review
P1050670ed.JPG
Metal body looks like it passed through world war, but inside - there are only few dust spots. Glass is in excellent shape. Jupit er 37A is underrated lens. A far better and more robust than CZJ Sonnar 135/3.5. Excellent sharpness wide open. Using it as close-up lens there is no color fringing a...
Rating: 8 | Recommended: Yes Read More
JCPenney 135mm F2.8 Coated Optics Review
DSC_1579A.jpg
This lens is in my family for almost 35 years now and it was s part of a two lens kit with which I started my adventure with amateur photography. Thus, I might be a bit biased in favour of this lens. There is plenty of vintage manual 135mm f2.8 lenses and this one seems to be similar to inter alia A...
Rating: 8 | Recommended: Yes Read More
Novoflex Noflexar 1:3,5/35mm Review
Novoflex_Noflexar_35mm_Macro_M42.jpg
Excellent, relatively unknown brand that excels in optics and lens technology. Novoflex was a high end german brand that made optics and they still make optics for large format cameras, I wouldn't say it's like a Zeiss or Leica lens, but its performance is extremely good, very good build quality an...
Rating: 10 | Recommended: Yes Read More
Cosina 20mm f3.8 MC Review
image1.JPG
I am having some mixed feelings about this lens. It has an amazing field of view but is not that amazing in regard to the image quality. I bought it for my K1000 because I wanted to do some photography with an ultra-wide lens and I was too cheap to buy the Pentax-M 20mm. This lens is apparently the ...
Rating: 6 | Recommended: No Read More
Tokina RMC Doubler Review
IMGP5285.jpg
I both this teleconverter in mint condition thinking that will outmatch the simple Tamron MC 2x teleconverter that I have ,so I did test them with Tamron CF80-210mm on night sky photography , but resolution, sharpness and loss of light on Tokina RMC was much worse, so the simple Tamron MC Tele conve...
Rating: 5 | Recommended: No Read More
Tamron Adaptall 80-250mm F3.8-4.5 (QZ-825M/QZ-250M) Review
qz-825m-800.jpg
June 14, 2020 Tamron Adaptall 80-250mm F3.8-4.5 250mm, F8
Rating: N/A | Recommended: Yes Read More
Auto Flex 50mm 1:2.8 Review
AutoFlexC.JPG
Highly underrated lens, it came with a Chinon CS I got for cheap years ago. I think it is a Tessar design, since the images came with a look similar to the 1950s Zeiss lenses Lots of charactwer in the images wide open, Quite sharp at f/5.6-11 and some light fallout on the edges at f/16
Rating: 8 | Recommended: Yes Read More
Soligor C/D 500mm f8 mirror Review
soligorCD500-2k.jpg
Lens is light and easy to handle. Sharpness is good if you can focus it properly. It could be hard because aperture only f8 and there is no focus confirmation on this lens on k-3 II. There is no shake reduction as well. K-5 worked well with it. My lens came with blend and using it significantly incr...
Rating: 7 | Recommended: Yes Read More



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