+1The only lenses I have encountered (in photography now for 60 years) without click stops for apertures are large format lenses.
The benefit of the click stop is repeatability of aperture setting...always in the click stop gets you same aperture.
For a long time, apertures with intermediate settings could be set in between click stops.
Most (all?) Russian rangefinder lenses that I have encountered don't have click stops, and I have a Canon RF lens that doesn't either.
Early SLR lenses did not have automatic stopdown to shooting aperture so.you preset the aperture ring to some value with click to hold that setting...then you rotated a ring (or pressed a button) to change from wide open aperture for focus to the preselected shooting aperture to take the shot, then you rotated the ring back (or pressed a button) to open iris to wide open so you could focus again.The consensus seems to be that few SLR lenses were clickless, while many RF lenses had clicks. The pre sets I've owned work fine once you get used to them. I'm trying to figure out why the SLR lenses have the clicks and ball bearings in them? Yes, they may keep the lens aperture from being accidentally stopped down, but that's true of the RF lenses too.
Maybe it's because this lens is used in stop down metering mode, so you can tell by the viewfinder almost exactly where the aperture is. That's why I left the bearing out, it just didn't seem to be needed. But on a camera w/o AE, if you had a clickless lens on it you would have no idea where the aperture was set to w/o looking at the lens, or by twisting the aperture all the way to one direction to know where wide open was, then counting the clicks in the other direction. Totally unrealistic.
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