Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
05-08-2015, 02:13 PM   #1
New Member

Join Date: May 2015
Posts: 15
90mm 67 lens with ExtTube?

So the 645 90mm lens is big money. Are there any major drawbacks with buying the 67 90mm and buying the PhotoDiox adapter ring? If you're shooting on Manual, the 67 lens would work just fine? Just no Autofocus?


05-08-2015, 02:36 PM   #2
Veteran Member

Join Date: Sep 2013
Location: Sydney
Photos: Albums
Posts: 844
This shot was taken with a 105mm f2.4 67 lens on a 645:

Here's the 75 f4.5 with extension tubes:

Afaik, she only has samples from 67 with extension tubes. If you can find an adapter cheap enough (that's the tough part!), then yes it's a workable solution. You might want to try with a helicoid tube (although the normal set are probably cheaper).

One advantage of the 67 primes is that they tend to be cheaper than 645 ones. One disadvantage is that they are huge!

On the 67 front, you might want to look at the 100 or 135 macro lenses (the 100 is better), or alternatively hunt down the 120mm 645 macro (in either A or FA flavours)
05-08-2015, 05:28 PM   #3
K David's Avatar

Join Date: Oct 2012
Location: SF Bay Area
Photos: Gallery
Posts: 1,358
Don't get the 90mm leaf shutter -- it's almost as soft as the 35mm fisheye. I'm told that the non-leaf-shutter model is better but have not used it personally.

Some of the 6X7 lenses (195 2.4, 135 4, and 200 4) stand up against FA and DA lenses on my k-3, so there is no reason that a good 67 lens wouldn't perform marvelously on a 645.

Here's a link to my album of test shots. Check out the file name if you'd like to see the focal length and whether or not it's a crop. Where the K-3 does not have the exact focal length as an option, I picked the closest one (such as the 90mm LS which is recorded as an 85mm lens in the exif.)
05-09-2015, 12:55 AM - 1 Like   #4
Site Supporter
Site Supporter

Join Date: Dec 2010
Location: santa monica
Photos: Gallery
Posts: 429
it was totally worth it for me to try out the inexpensive P67 90mm, 100mm Macro, 105mm, 135mm Macro and shoot them on the 645D. That way when i got a 90mm DFA I knew exactly why it was nice to quickly sell all of that glass and use the best (actually I kept the 105 as a "back up").

For my tastes the P67 glass on the D or Z look good at stops like 11 and 16. The 90mm DFA looks really great from about 3.2 to 10.


  • 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!
645d, 645z, 90mm, 90mm 67 lens, camera, lens, medium format
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax 67 90mm LS sunshine7913 Pentax Medium Format 8 02-16-2015 09:24 AM
67 90mm Leaf Shutter lens + 2X converter? UnkleSamo Pentax Medium Format 13 11-15-2014 09:36 AM
67 lens with 67 extension tubes on 645d fatboy22 Pentax Medium Format 3 06-28-2014 04:44 PM
Problem with Vivitar 90mm Macro Lens old4570 Troubleshooting and Beginner Help 16 09-02-2013 04:52 PM
67 90mm F2.8 lens hood apeiron Pentax Medium Format 3 10-21-2010 03:02 PM

All times are GMT -7. The time now is 12:28 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]