Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
11-07-2018, 12:25 PM   #1
New Member

Join Date: Nov 2018
Posts: 5
Fotodiox PRO PT67-P645 (II) doesn't show any F. data?

Hi Guys!

I just entered the pentax medium format world! Bought a Pentax 645z. a while ago and I also purchased an Fotodiox PRO PT67-P645 (II) adapter

to use P67 lenses. I tried to look it up in the forum but I might be overlooking something.
Is it correct when using this ring you don't receive/show no F. (apature) data on the camera at al? (I included an attachment)

And if so is there an adapter that does give you this information or something like an option on Nikon camera (as the NON-CPU) option?
To add manual lenses?



Attached Images
View Picture EXIF
IPhone 7  Photo 
11-07-2018, 01:26 PM   #2
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 49,781
I hope I'm not confusing things, but AFAIK this is normal. The camera has no way of knowing what the maximum aperture of the lens is, so it can't give you a number.

However, the adapter has an aperture coupling, so the camera does know by how many stops you've stopped down, and thus enables the use of Av mode.

Adam Webmaster (Site Usage Guide | Site Help | My Photography) server and development costs are user-supported. You can help cover these costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

11-08-2018, 10:12 AM   #3
New Member

Join Date: Nov 2018
Posts: 5
Original Poster
Ah ok. Then I will treat this as a fully manual sitution.
It was just pratical to see the F. on the screen. too bad

  • 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, adapter, camera, fotodiox, fotodiox pro pt67-p645, ii, lenses, medium format, option, pentax
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Even a pro with a pro camera doesn't always get it right Wasp Photographic Industry and Professionals 25 06-25-2018 03:56 PM
P645 or P645n(ii) when using P6x7 lenses? johnha Pentax Medium Format 7 04-29-2018 03:49 PM
Fotodiox Pentax 67 Lens to P645 Camera adapter LaHo Pentax Medium Format 18 01-02-2016 11:58 AM
Fotodiox Pro Adapter Hasselblad V to Pentax 645 (Pro HB-PT645) -A short review- veraikon Pentax Medium Format 4 06-25-2015 12:36 PM
Eff, My Fotodiox Adapter Doesn't Fit littledrawe Pentax Q 6 08-29-2014 08:19 AM

All times are GMT -7. The time now is 03:41 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]