Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
Longhorn -75mm 645 Pentax on K20D
Posted By: Rupert, 09-26-2009, 08:49 PM

Curious if anyone else is using the 645 lenses on the K20D or other Digital bodies? I have purchased several of these fine lenses and find them excellent, although a little difficult to use since they are full manual on the K20D. I have the Pentax adapter, a well made device, but a little pricey. Currently, my two favorites are the 75mm F2.8 and the 45-85 F4.5 followed closely by the F4 120mm Macro. Any experience anyone has using any 645 lenses on your K20D or similar body would be appreciated.
I shot this Longhorn using the 75mm + the Tamron 1.4 TC on the K20D and thought it held up fairly well. I have not had a lot of good luck on many lenses with the Tammy TC, but it works pretty good on this lens.

Views: 4,163
01-11-2011, 12:17 PM   #16
Veteran Member
Manel Brand's Avatar

Join Date: Sep 2008
Location: Porto
Photos: Gallery | Albums
Posts: 853
QuoteOriginally posted by Rupert Quote
Baby Otie...When he was a baby......
So, there's the famous Otis! Nice to see him. Thanks.

01-15-2011, 07:37 PM   #17
Site Supporter
Otis FanOtis FanOtis FanOtis FanOtis FanOtis Fan
Site Supporter
Rupert's Avatar

Join Date: Sep 2006
Location: Texas
Photos: Gallery | Albums
Posts: 25,123
Original Poster
Nice shot indeed Bob...I love shooting Longhorns! I've been through Dripping Springs many times...nice area for Longhorns.
Can you imagine the length of these horns if they were straight?
[IMG] [/IMG]

Sailor, Frogfish, Sparkles.....thank you for looking and the comments......Mrs Rupert says I went to the dogs years ago. I don't argue with her, it's pointless.
Best Regards!
01-15-2011, 08:25 PM   #18
Veteran Member
Bob Harris's Avatar

Join Date: Feb 2010
Location: Canon City, Colorado
Photos: Gallery | Albums
Posts: 18,471
Rupert, I did not realize how big they were until I was up close. Looka like we may "winter" this year in "Drippin" as they say. Maybe you can stop by and we will pop open a Lonestar, sit a spell and go for BBQ at the Salt Lick . Bob

Last edited by Bob Harris; 01-16-2011 at 09:54 PM.
06-09-2011, 11:08 AM   #19
Forum Member

Join Date: Dec 2007
Location: Socorro, NM
Posts: 68
Bob, Rupert, et al - I have been considering getting the 645 A or FA 120 macro for my k20d (and maybe K5) for strictly macro work. Rupert, I'm curious if you have to stop this down more than a 100mm made for the smaller format camera? Seems I could save a bundle by finding this lens on ebay, or such (an A went for $200 recently) rather than the more expensive 100mm. Thanks


  • 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!
75mm, camera, k20d, lenses, longhorn, pentax, photo, tc
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Pentax 645 75mm Lens Avenger Sold Items 0 09-26-2009 07:32 PM
For Sale - Sold: For Sale -Pentax 645 FA 75mm f2.8 w/645K Adapter Sirfishalot Sold Items 2 03-13-2007 05:51 PM

All times are GMT -7. The time now is 11:54 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]