Adjusting the RF and not sealing the screw

[Vickko]

Has anyone who has adjusted the RF focus, not re-sealed the screw and had the focus stay in adjustment?

My RD1 focus was really annoying me, and I finally adjusted it last week. I took it out today to shoot and it was way off, worse than before. All that happened to the camera this week was riding in the car with me in a camera bag.

I re-adjusted it now and have sealed the screw the best I could, without taking the top off.

...Vick

 

[Vagabond]

A few months ago I adjusted mine, have used it quite a bit, and it hasn't changed yet. I was afraid that I would miss with the sealer and gum up the works somehow. Both the vertical alignment and the infinity had to be adjusted and I was amazed at how little the screws had to be turned in order to make the correction.

Good luck with yours, I hope it stays in now.

Bill

 

[rsl]

I adjusted infinity twice a few months ago -- right after the camera arrived. First time I did it, shot a few frames, re-checked and found it pretty far off. Second time, while I had the camera on a tripod and the accessory shoe off, I made the adjustment, then shot a few frames, then adjusted it again. It's been rock solid ever since. There seems to be a fair amount of springy tension on the screw, possibly from the sealer. As near as I can tell, as soon as you start shooting after an adjustment it has a tendency to move back to its earlier position. Try adjusting, shooting, checking and re-adjusting while the camera's on a tripod, until the adjustment stays in place. I didn't re-seal and I've shot about 1000 frames since then with no drifting of the adjustment.

 

[pfogle]

I've been having this problem over the past couple of weeks, but I don't think it's to do with the sealer.

Depends which screw you're talking about. The worst one by far is the middle of the three on top, which does the infinity focus point.

For a start, when you put any pressure on it, the whole patch shifts, so it's very hard to know when it's in adjustment. Secondly, on mine, there's a lot of slack, so there are two points that the patch can settle into *without the screw moving at all* - I have found I have to use the screw turned to the right (clockwise from above) to get it to be at all stable.

Lastly, it settles after you've adjusted it. I've never used the sealer, as I'd probably end up glueing it into the wrong position, so I just gently tap the top plate a few time before putting the hotshoe back on, readjusting if necessary.

 

[Ed Schwartzreic]

Agree with above posts. I have had to redo my RF several times, but mostly after several airplane trip, where I think vibration may have caused the setting to drift. If I get it right and there is no trauma to the camera it stays set correctly for months.

 

[ferider]

I've done it on the R3a, and the same experience: if you don't seal
it, it starts drifting. A bit of nail-polish on the adjustment screw, applied
with a tooth pick does the job.

Roland.

 

[Ben Z]

I The worst one by far is the middle of the three on top, which does the infinity focus point.

For a start, when you put any pressure on it, the whole patch shifts, so it's very hard to know when it's in adjustment.

Try holding the screwdriver lightly with no downward pressure, and turn the driver shaft with pliers.

 

[pfogle]

Try holding the screwdriver lightly with no downward pressure, and turn the driver shaft with pliers.

good idea. I'm a bit of a philistine when it comes to fine mechanical work 🙁

At the end of the day, I just shoot at 5.6 😀