Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-25-2016, 11:47 AM   #1
New Member




Join Date: Aug 2015
Posts: 15
K-1 Front Focus Problem with 55mm Lens

Tested K-1 with Pentax 15-30 and 24-70. Manual and AF right on.

Tested with Pentax 55mm. Front focus problem about 0.5 inch focus in front of AF focus point. Manual focus okay. Close focus distance as I want to take photos of plants with focus stacking.

How do I adjust for this one lens? Menu items are greyed out.

I purchased the K-1 for its versatility and flexibility, so now I want to take advantage of these features.

07-25-2016, 12:12 PM   #2
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 40,983
You apply fine adjustments through C25 -> 3 (adjust one).

With 1:6 maximum reproduction, the 55mm isn't really a close-up lens, though, so just be aware of that when shooting, as it can easily catch you off-guard.

Also, AF accuracy up-close may vary from shooting at farther distances. Manual focus or live view may be a better bet for focus stacking.

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

07-25-2016, 02:11 PM   #3
KDD
Veteran Member




Join Date: Sep 2013
Photos: Gallery | Albums
Posts: 321
I think close up about 3 feet to subject.
07-25-2016, 02:57 PM   #4
Loyal Site Supporter
chuck_c's Avatar

Join Date: Jun 2011
Location: Central Ohio
Photos: Gallery | Albums
Posts: 1,002
Minimum focus distance for the DA* 55mm 1.4 is 45cm, or 17.71 inches.

For more information on this lens see:

SMC Pentax-DA* 55mm F1.4 SDM Reviews - DA Prime Lenses - Pentax Lens Reviews & Lens Database

07-25-2016, 11:27 PM   #5
New Member




Join Date: Aug 2015
Posts: 15
Original Poster
Thanks for the replies. Will try all of the suggestions. I was very close with the focus test, but was able to focus manually. Manual focus was spot on. No front or back focus issue. Pun intended. You are correct, I do need to use manual focus on macro, especially with focus stacking. My eyes don't work so well with manual focus, but they should be adequate. I will test the front and back focus again at a little greater distance with the 55mm before I attempt to adjust the camera settings for the lens. I am hoping that the single test allows me to select the lens by focal length, as I would hate to adjust for all lenses as the others all work. Just bought the 70-200 Pentax and tested it as well. Works very nicely. I think this is going to be a beautiful lens as it is fast (2.8), focuses relatively quickly(hopefully as fast as I need), and appears to be very sharp.
Reply

Bookmarks
  • 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, dslr, focus, front, full frame, full-frame, k-1, k-1 front focus, k1, lens, pentax, pentax k-1
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Front focus problem robert Pentax DSLR Discussion 3 02-17-2016 07:05 PM
K-5 Manual Lens Front Focus & Focus Beep woes fixed kneonx Pentax K-5 14 04-12-2014 03:47 PM
Pentax K-50 with uncorrectable (?) front focus problem and horrendous Ricoh service anirbax Pentax DSLR Discussion 7 03-29-2014 08:34 AM
odd front focus problem with kit lens and Tamron 18 - 250mm lens jlaubza Pentax DSLR Discussion 12 10-30-2011 09:42 AM
K-7 focus adjustment with 55mm 1.4 bushwhacker09 Pentax SLR Lens Discussion 9 07-09-2011 02:26 PM



All times are GMT -7. The time now is 10:33 PM. | See also: NikonForums.com, 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?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top