Why why why won't my Hexar RF focus properly?!?

[rvaubel]

This problem exists in some of the Epson R-D1's and Leicas as well. I had a long discussion with DAG about this very problem. It seems that the ratio of the rangefinder mechanism to the focuser mechanism that should be 1:1 isnt. On the M2 (I think its the M2) this ratio can be adjusted by basically canting the baseline of the rangefinder mechanism with respect to geometrical normal every so slightly. This is a tedious process as a reiteritive procedure is the only one that will give satisfactory results. Plus most of the later models dont even have this adjustment... if its out your just screwed because it means something is bent. To further complicate things, you got the autofocus motor mechanism which could be involved also.
If I were you I'd set the focus for about 5 or 6 ft and see how stuff comes out at 3 ft wide open. Then try shooting at f5.6 or so at infinity. The thinking there is how often do you need to shoot wide open at infinity vs the greater need to shoot wide open close up.
I know its a compromise but if it works OK then it works OK.
Rex

 

[StuartR]

I'd send it to DAG if I were you. He adjusted mine to focus with Leica lenses for 35 dollars. I have now sold it, but when I had it, I even used 135mm lens wide open at close focus to reasonable effect.

Here is an example of the DAG adjusted Hexar RF with the 135mm TE at f/4 and 1.5-2 meters:

 

[sockeyed]

Ghost - I did try adjusting for 1m. It focused fine at 1m, but was hopeless at greater distances and the RF wouldn't even move to infinity.

Thanks for the advise about DAG. I'll drop him an email.

Cheers

 

[furcafe]

This is the Hexar RF we're talking about here, not the AF.

. . . To further complicate things, you got the autofocus motor mechanism which could be involved also. . . .
Rex

 

[sockeyed]

The Hexar is now on its way to DAG. I explained the problem and he's confident he can fix it. [crosses fingers].

 

[Flyfisher Tom]

The Hexar is now on its way to DAG. I explained the problem and he's confident he can fix it. [crosses fingers].

Ben,

Could you keep us updated on your/DAG's progress ...

I'm interested in possibly picking up a Hexar RF from a friend, but am concerned about precisely these problems (should they develop in the future). If DAG is able to take care of it, and for a reasonable amount, I'd be much more optimistic about getting one. thanks

 

[Flyfisher Tom]

Ben,

nevermind, I just found your most recent thread on this camera 🙁 sorry to hear of your troubles.

 

[Gabriel M.A.]

Does that mean there was no hope for this particular Hexar RF?

 

[Flyfisher Tom]

In the other thread, I think Ben exhausted Ken Ruth, DAG, and possibly Greg Weber (not sure about this last one).

So this may be the end of the line.

 

[Gabriel M.A.]

Ah yes. For future reference (and inquring minds), here's that thread:

http://www.rangefinderforum.com/forums/showthread.php?t=25264

 

[Issy]

As Ghost pointed out, there are two adjustments, two screws. One for infinity, and one for 1m. You need to check and adjust both.

Took me a year to find one, but I finally got my hands on a service manual. Check the last reply in this thread:
http://www.rangefinderforum.com/forums/showthread.php?t=1937

Sounds like you adjusted one, but not the other.