Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
10-20-2008, 05:49 PM   #1
Site Supporter

Join Date: Mar 2008
Location: Ottawa Valley
Photos: Gallery
Posts: 224
Will a Fujinon 55mm lens work on K100D

I have a mint Fujinon f1.8 screw mount lens and would like to use it on my K100d. Will it be compatible with the camera if I use a M42 adapter. Thanks.

10-20-2008, 06:00 PM   #2
Veteran Member
Stratman's Avatar

Join Date: Mar 2007
Location: St Louis, Missouri U S A
Photos: Gallery | Albums
Posts: 2,464
I see no reason why it wouldn't. But I would recommend getting the genuine Pentax adapter. PentaxWebstore Mount Adapter B (35mm Screwmount to Bayonet)
10-20-2008, 06:00 PM   #3
Ole's Avatar

Join Date: Sep 2006
Location: Copenhagen, Denmark
Photos: Gallery | Albums
Posts: 3,881
Yes, it would fit.
10-21-2008, 07:48 AM   #4
Veteran Member
rburgoss's Avatar

Join Date: May 2008
Location: San Jose, Costa Rica
Photos: Gallery | Albums
Posts: 972
Watch out for some EBC-FUJINON lenses, that have a small notch in the aperture ring (to index aperture reading into the Fujica screw mount). This notch may be "too high" and may scratch your body around the lens mount, or will "lock" the aperture ring when lens is screwed into adapter.

Of course, use a genuine k-screw pentax adapter.

Robert B.

10-21-2008, 11:59 AM   #5
ryan s's Avatar

Join Date: Jan 2008
Location: Madison, WI
Photos: Gallery
Posts: 2,370
It will not work, besides wide open.

Besides the aperture "protrusion" getting in the way of the aperture ring twisting, the aperture pin is depressed when the shutter is triggered on an M42 camera, like most M42 lenses. There is no manual lens is always open.

I wish Pentax would make an adapter with a stopdown flange. I had one for my EOS so I could use the 55/1.8 even though I had to unscrew it a bit to change aperture value.
10-21-2008, 05:20 PM   #6
Site Supporter

Join Date: Mar 2008
Location: Ottawa Valley
Photos: Gallery
Posts: 224
Original Poster
Thanks all for the info, based on the replies I think I'll leave the lens on the Fujica.

  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, dslr, fujinon, k100d, lens, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: M42 Lenses. Pentax Taks 35mm, 135mm, 55mm, Fujinon 55mm Peter Zack Sold Items 5 03-04-2010 05:24 PM
SMC Pentax-FA 1:1.4 50mm vs. Fuji Fujinon 1:1.8 55mm carpents Pentax SLR Lens Discussion 5 12-28-2009 03:11 AM
For Sale - Sold: Pentax ME Super, M 50mm/1.4, CZJ 35mm/2.4, Fujinon EBC 55mm/1.8 chemxaj Sold Items 9 11-08-2008 12:37 AM
Fuji Fujinon 1:1.8 55mm vs. Super-Multi-Coated Takumar 1:1.8 55mm carpents Pentax SLR Lens Discussion 6 06-27-2007 05:25 PM
Portraits pt 2 (hattitudes work) 18-55mm kit lens slip Post Your Photos! 16 03-28-2007 03:15 PM

All times are GMT -7. The time now is 10:01 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]