Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
04-02-2016, 04:44 AM   #106

Join Date: Nov 2013
Posts: 4,854
QuoteOriginally posted by cyberjunkie Quote
Portraits with a super fast lens wide open aren't for AF either.
DOF is paper thin, if the subject isn't jumping around, MF allows to focus to the right spot (closest pupil).
Well Contrast AF is as accurate as manual focussing and some new lenses have corrective system that make phase AF as precise as MF. I remember reading a test from lens rental I think about it with some modern Canon or Nikon lens, They explained that even it is written nowhere the latest high end lenses had very accurate phase AF and performed as precisely as a careful manual focus. The old AF lens where noticably less precise.

Anyway I agree that with a K5-II and the stock OVF it is pretty difficult, even for MF. K3 make focussing on off center point very precise and AFC keep the subject in focus if they move slightly. For paper thin dof, this help.

As the Zeiss is for mirrorless you might complain for sport/action performance of the AF (also depending of the camera model) but you would always manage to get very precise AF whatever the dof. I am not sure I would find a 55mm f/1.8 on FF the best case. It more suited to larger portraitures with more body in the frame and so having the subject in focus is no challenge. For a tight portrait, on FF I would think more on a 135mm...

04-02-2016, 04:24 PM   #107
Veteran Member
slip's Avatar

Join Date: Oct 2006
Location: 2 hours north of toronto ontario canada
Photos: Gallery | Albums
Posts: 3,537
I don't own one, but my choice would be a used *55 1.4 and a trip somewhere to try it out

04-03-2016, 02:59 AM   #108
Loyal Site Supporter
Loyal Site Supporter
clackers's Avatar

Join Date: Jul 2013
Location: Melbourne
Photos: Albums
Posts: 14,356
QuoteOriginally posted by slip Quote
I don't own one, but my choice would be a used *55 1.4 and a trip somewhere to try it out

I've ummed and ahhed about getting one for a future K-1, Andy. Lot less than a thousand dollars, f1.4.

  • 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!
55mm, af, camera, distance, f1.8, f1.8 vs sony, fe, ff, focus, k-mount, lens, lenses, mf, pentax, pentax lens, people, photos, screen, sharpness, slr lens, sony, sony zeiss fe, takumar, test, vs sony zeiss, zeiss, zeiss fe 55mm
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Super Takumar 55mm F1.8 vs DA 50mm f1.8 hjoseph7 Pentax SLR Lens Discussion 10 05-11-2015 09:54 AM
Battle: SMC Takumar 55mm f1.8 VS Pentax FA 50mm f1.4 on the Q EarlVonTapia Pentax Q 13 09-11-2014 07:56 PM
If there is a lens like Sony FE 55mm F1.8 for pentax... starjedi Pentax SLR Lens Discussion 35 02-13-2014 11:32 AM
K55mm f1.8 vs SMC Super Tak 55mm f1.8 JeffJS Pentax SLR Lens Discussion 22 06-04-2012 03:32 PM
Mamiya / Sekor 55mm f1.8 or SMC Takumar 55mm f1.8? -kb- Pentax SLR Lens Discussion 14 09-16-2009 05:54 AM

All times are GMT -7. The time now is 06:38 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]