Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
09-19-2010, 07:45 PM   #1
Junior Member
rortiz's Avatar

Join Date: Jul 2008
Location: Sydney, Australia
Photos: Gallery
Posts: 46
M 50 F1.4 and K20d Problem

Hi,

I wonder if there are any of you who have problems with using the K20d and A 50 F1.4. I've had the shutter release freeze on me a few times. This seems to be an intermittent problem. I've since found out that when I turned on my K20d after mounting the 50 then scrolled through a few focal lengths first before choosing 50mm to tell the camera what lens was mounted on it, the problem would disappear.

Does anyone have the same problem? What about other lenses in the M range? I ask because you can usually purchase a used M lens for a very good price and the quality of the optics is quite good.

Any feedback appreciated!

Cheers,

Ramon

09-20-2010, 02:09 AM   #2
Junior Member




Join Date: Jan 2010
Posts: 32
I use a few M lenses on my K7 without any problem. The shutter fires fine no matter which focal length is specified.
You have to make sure the aperture ring is set to "A" and the focus mode is set to "M". (Sorry if this advice is too trivial.)
09-20-2010, 02:20 AM - 1 Like   #3
Site Supporter
pschlute's Avatar

Join Date: Mar 2007
Location: Surrey, UK
Photos: Gallery
Posts: 1,033
With the M lenses and the camera in AFS mode, the shutter wont release unless the camera thinks it has focus lock. So you need the green hexagon lit. This can be used to your advantage by using it as a "catch in focus".

If like me you want full control over the shutter with Mlenses, make sure the camera is in manual (focus) mode.
09-20-2010, 10:02 PM   #4
Veteran Member




Join Date: Jan 2010
Location: Ferguson, Mo.
Photos: Gallery
Posts: 1,348
Hi Ramon, think Peter is on to something there,have had mine long enough to make
me sound old. guess theres couple of ways to 'fix', as Peter suggest or disable
catch in focus in custom menu selection. that nifty 50/1.4 is my favorite.
Bill

09-21-2010, 05:26 AM   #5
Junior Member
rortiz's Avatar

Join Date: Jul 2008
Location: Sydney, Australia
Photos: Gallery
Posts: 46
Original Poster
ilan, Peter and Bill,

Thanks for your advice. I now know what I was doing wrong - I hadn't switched the AF to manual. This explains the intermitten nature of the problem. The shutter fired when I was spot on with my focussing but did not when I was off. Makes sense!

Ramon
09-21-2010, 09:24 AM   #6
Inactive Account




Join Date: Aug 2008
Location: Michigan, USA
Photos: Gallery | Albums
Posts: 7,485
QuoteOriginally posted by rortiz Quote
ilan, Peter and Bill,

Thanks for your advice. I now know what I was doing wrong - I hadn't switched the AF to manual. This explains the intermitten nature of the problem. The shutter fired when I was spot on with my focussing but did not when I was off. Makes sense!

Ramon
Welcome to the world of Catch In Focus (focus trap). Set your camera to AF-S, press the shutter release while turning the focus ring. As soon as it sees focus, the shutter will trip. I think you have to turn it on in the custom menu for it to work though.

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!
f1.4, k-mount, k20d, lens, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Just got my K20D... problem already - need help! dimak Troubleshooting and Beginner Help 6 05-01-2009 04:21 AM
K20D AF problem benjikan Pentax DSLR Discussion 19 03-27-2009 03:32 PM
Card read problem K20d. Have you had this problem? rsi1986 Pentax DSLR Discussion 8 12-27-2008 05:25 AM
SR problem on K20D ivanp Pentax DSLR Discussion 16 06-18-2008 05:46 AM
K20D problem ariahspam Pentax DSLR Discussion 6 06-06-2008 12:10 PM



All times are GMT -7. The time now is 12:12 AM. | See also: NikonForums.com, CanonForums.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