my DA* 16-50 cannot auto forcus ( need urgent advice)


morganoh

New Member
Dec 24, 2002
820
0
0
43
Bishan
www.pbase.com
#1
OMG

I only bring one lens + K3 with me to USA going Lake Tahoe.
and it cannot auto forcus.
Try to reset camera body, can auto forcus for few mins and now cannot again

What can I do?

IF using manual forcus. do I just turn the lens untill I hear a beep sound = object in forcus?
Any sugguestions

THANKS
 

ranchy

Senior Member
Jan 11, 2010
2,505
25
48
#2
OMG

I only bring one lens + K3 with me to USA going Lake Tahoe.
and it cannot auto forcus.
Try to reset camera body, can auto forcus for few mins and now cannot again

What can I do?

IF using manual forcus. do I just turn the lens untill I hear a beep sound = object in forcus?
Any sugguestions

THANKS
Yup, for manual focus, you can turn to focus and hear the beep to indicate focus..
Is your lens still SDM or converted to screw drive mode??
 

pinholecam

Moderator
Staff member
Jul 23, 2007
10,944
88
48

morganoh

New Member
Dec 24, 2002
820
0
0
43
Bishan
www.pbase.com
#8
but after the SDM start to work,

I try the method of turning the lens 360deg, thinking that it will make the lens smoother.
but WRONG thing to do . the O'Ring within the lens broke and it went it to the "Range indicator" of the lens.
Now my lens is struck, cannot even manual focus the lens

Not its officially damaged, must send for repair (replace the oring)
 

ranchy

Senior Member
Jan 11, 2010
2,505
25
48
#9
but after the SDM start to work,

I try the method of turning the lens 360deg, thinking that it will make the lens smoother.
but WRONG thing to do . the O'Ring within the lens broke and it went it to the "Range indicator" of the lens.
Now my lens is struck, cannot even manual focus the lens

Not its officially damaged, must send for repair (replace the oring)
:bigeyes::bigeyes:
omg........ zzzz
 

pinholecam

Moderator
Staff member
Jul 23, 2007
10,944
88
48
#10
but after the SDM start to work,

I try the method of turning the lens 360deg, thinking that it will make the lens smoother.
but WRONG thing to do . the O'Ring within the lens broke and it went it to the "Range indicator" of the lens.
Now my lens is struck, cannot even manual focus the lens

Not its officially damaged, must send for repair (replace the oring)
Aiya!

I guess that thing was going to go sooner or later and might have been the cause of the problem.
Just take it that it better spoil now than in the field.

Hope you get things fixed before the trip.
 

Oct 28, 2009
328
1
18
#12
I had the EXACT same problem with my DA 16-50/2.8.
SDM failed initially, but was able to use it after leaving the capacitor to charge with the camera attached and switched on.
Then, the cable snapped.
Sent it in for repairs twice, took a lot of time and $$.
I love Pentax, but my 50-135/2.8 SDM failed too.
Have since moved on to Nikon, and am using it as my primary system.
Still occasionally play with my Pentax gear, ergonomics are better and I miss the Shake Reduction. But reliability was appalling
 

pinholecam

Moderator
Staff member
Jul 23, 2007
10,944
88
48
#13
Im in the mid of my USA trip. hahahahah
oops!

Maybe try to get a 18-55 kit lens or something.
Or even a Samyang 14/2.8, 21/2.8 if you can live with one lens. (these are cheaper in the US too)

Sorry to hear about your issues.
 

Top Bottom