Forgot Password
Pentax Camera Forums Home
Log in or register to remove ads.

SunnyG. SunnyG. is offline

Veteran Member


Showing Guestbook Entries 1 to 2 of 2
  1. kernos
    Ok one last link. This is a (highly subjective) bokeh comparison of the lenses we've been discussing.
  2. kernos
    I just spent a little time wandering through lens formula schematics. Interestingly, the Canon FL 55mm 1.2 and the Topcon (pre Cosina) 58mm 1.4 have the same 7 element 5 group scheme with very similar element construction. The Voigtlander remake is very close but is a 7 element six group design. This would explain, perhaps, why people were getting different results from the Topcon vs. the VL. Between the FL and the Topcon then it comes down to small details like construction, glass formula and coatings. If you're interested this is a pretty good background on lens formulae for normal lenses.

About Me

  • About SunnyG.


Total Posts
Photo Gallery
  • Total Photos: 0
  • Total Comments: 0 Marketplace
General Information
  • Last Activity: 06-22-22
  • Join Date: 04-23-17
  • Referrals: 0
  • Total Likes Received: 46

Latest Reviews

Item Name Thumbnail Recommended Rating Price Review

Latest Threads

Thread Forum Last Poster Replies Views Last Post
Pentax k-70 successor Pentax DSLR Discussion jatrax 60 4577 11-09-20 04:02 PM
Wide angle zoom lens. Pentax SLR Lens Discussion SunnyG. 64 3282 12-08-20 01:20 PM
SMC 50mm f1.4. Pentax SLR Lens Discussion SunnyG. 44 2719 12-08-20 01:34 PM
Pentax K-50: Need help Troubleshooting and Beginner Help SunnyG. 11 901 11-04-20 12:07 PM
Can't find Pentax cameras on Ricoh India's webpage General Photography clackers 12 1222 10-18-20 03:18 PM
Sensor stack thickness of the Pentax K-1 and K-1 mk3?... Pentax K-1 & K-1 II pinholecam 23 2598 09-03-20 08:49 PM
Mir-46МК 35mm F1 4 Pentax SLR Lens Discussion VadikToronto 1 868 05-17-20 04:52 AM
Need help urgently! Vivitar 24mm f2! Pentax SLR Lens Discussion SunnyG. 17 1668 03-09-19 07:27 AM
Lens stuck on K200D Troubleshooting and Beginner Help Not a Number 6 872 01-18-19 07:37 PM
Ricoh lens re coating service! Pentax SLR Lens Discussion ZombieArmy 32 3007 01-24-19 11:17 AM
View More Threads

All times are GMT -7. The time now is 11:58 AM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]