removing aperture click stop

You can get this done professionally, though i recall reading that they install gears or something. Cool video though, i was with him until he started to put jbweld on it, if that leaked i dont think you could get that off the lens.
 
i did this on a SIGMA lens by mistake, opened it up as it was stiff to focus, then put it all back together and the aperture was stop less... then i noticed a small metal ball bearing on my bed! with SIGMA its just a metal ball that clicks into holes very lo-tech.

the focus was still stiff when back together :smile: (typical)
 
tonpole said:
You can get this done professionally, though i recall reading that they install gears or something. Cool video though, i was with him until he started to put jbweld on it, if that leaked i dont think you could get that off the lens.
Click to expand...

Yes, JBWeld is a VERY poor choice. Would never let that stuff near a lens. It may harden over time, even without the hardener component. Lens grease is the proper thing to use, but if you don't have that, there are other options.

Plumber's Grease is very viscous and would probably do the job. Haven't done this de-clicking myself, but have used Plumber's Grease on the focusing helical of a lens that was stiff to focus. Makes it nice and smooth, but with proper viscous feel.
 
Also, some greases contain solvents or other chemicals that vaporize. This can wreck your lens in short order. I would stick to lens grease.

Chris
 
Many a DIY lens repair-person has "de-clicked" a lens by misplacing the ball-bearing :)

Lithium grease from Radio Shack (or similar) would be a good choice, although most of the time, nothing works well too since it's usually greased up already.
 
Another option would be...

1) Remove the aperture ring, keep the metal balls.
2) On the inner side of the plastik ring you can see the path where the metal ball(s) scratch and the holes where they "stop" . You can just carve out the path of the ball.
3) Put everything back together (with the spring supported metal balls).

Make sure not to remove to much of the plastik, or the apperture will get to lose. Especially with very fast lenses (e.g. 50mm f1.4), the last part of the metal ring pushing the aperture blades is very steep. If its to lose, the aperture will close ab bit from vibrations.

Cheers!
 
at first it seemed good idea to adjust aperture without click stops. but adjusting aperture changes exposure in manual exposure mode.
 
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