Forgot Password
Pentax Camera Forums Home
 

Showing results 1 to 6 of 6 Search:
Forum: Monthly Photo Contests 08-09-2020, 10:32 PM  
Smokey Sunset
Posted By Pol57
Replies: 37
Views: 420
I would like to nominate this photo
Forum: Winners' Showcase 06-08-2020, 11:48 AM  
May, 2020: Third Place: Campanula
Posted By Pol57
Replies: 27
Views: 401
This is an underestimated but grateful little flower
Forum: Monthly Photo Contests 06-02-2020, 12:54 PM  
May bells
Posted By Pol57
Replies: 29
Views: 271
I would like to nominate this photo
Forum: Pentax SLR Lens Discussion 04-23-2020, 03:09 AM  
Is this a rare lens ? Komura 28mm f2.5
Posted By Pol57
Replies: 12
Views: 3,588
Following my previous mails, I found a very interesting document about Komura/Komuranon lenses. It is in French, but the information is easily understandable.
In the annex you'll find a partial view of the Komuranon prime lenses (the document itself is 45 by 42 cm and printed on both sides). It is interesting to see that the 24mm f2.5 has 11 glass elements in 8 groups, impressive engineering.
Further, the folder contains information (including the lens formulas) on 50 to 150mm enlarger lenses, 200 f3.5 and 300 mm f4.5 Komuranon tele-lenses and the 38/90 f3.5 + 75/150 f4.5 + 80/210 f4.5 and 90-250mm f4.5 Komuranon zoom lenses.
After having scanned the internet for some time, this document is quite unique and therefor I wanted to share it with you.
In case someone needs data on the above lenses, just send me a message.
Forum: Pentax SLR Lens Discussion 03-21-2020, 04:40 AM  
Is this a rare lens ? Komura 28mm f2.5
Posted By Pol57
Replies: 12
Views: 3,588
Following my earlier message, I'm adding a couple of picture of the Komura 24mm lens (on my KX).
Pictures made with the Komura 28 f2.5 on my Samsung NX11.

Paul
Forum: Pentax SLR Lens Discussion 03-20-2020, 09:50 AM  
Is this a rare lens ? Komura 28mm f2.5
Posted By Pol57
Replies: 12
Views: 3,588
Hi, I'm new on this forum (though I have been here before, because there so much of useful information).
I just wanted to share that I managed to purchase this Komura Lens Mfg Ltd Komuranon 28mm f2.5 (FD mount) recently (from France).
The strange thing is that is does not show K.M.C. on the lens and no serial number. This should be engraved and filled with white paint, but it simply isn't there. Any opinion about this? Could it be a kind of early units or prototype?
Further - by sheer coincidence - I purchased another beauty: Komura Lens Mfg Ltd Komuranon KMC 24mm f2.5. I searched the internet but nothing can be found about this one. By the way this one is in Pentax mount. I tried both (with adapters) on my Samsung NX11 and the results are not bad.
Kind regards, Paul
Search took 0.00 seconds | Showing results 1 to 6 of 6

 
Forum Jump


All times are GMT -7. The time now is 06:03 AM. | See also: NikonForums.com, CanonForums.com 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?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top