"Double click" at 1.4

[S Lam]

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Just bought a 35mm, 1.4.

 

When I reach 1.4, I feel another click even after I reach stop 1.4. It is like having another stop beyond 1.4. Is this normal?

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[apertur]

Yes, it slightly goes beyond. Though not a full stop.

[menos I M6]

Absolutely normal with all modern Leica M lenses.

The more use they see, the more pronounced this issue will get.

 

It can then be slightly reduced with a check up in Wetzlar but will always remain to a certain extend.

[bephoto]

I got a 75mm f/1.2 Summilux

problem is that I use it so much I can't live with out it and Leica usually takes an aeon to do any service on lenses.

 

this is the only lens this happened to it I used my previous 50LuxASPH 10 times more than this and never had aperture upgrades. I guess there is something wrong with some lenses' mechanical designs. I'm sure someone with more knowledge can enlighten us because really wanna know why this happens to >$5K lenses.

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[menos I M6]

See my post above - it's the way, these lenses' aperture assemblies are designed.

Unfortunately the mechanical design leads to this "looseness" which in imaging terms has absolutely zero importance.

 

I truly enjoy especially my Konica M mount lenses - none of them exhibits any looseness of the aperture dial, while especially the UC-Hex is the epitome of precision feel of the controls.

 

It is like it is. You can live with it and just continue to use the lens or have it tuned up and pay for it.

[gpwhite]

I got a 75mm f/1.2 Summilux

problem is that I use it so much I can't live with out it and Leica usually takes an aeon to do any service on lenses.

 

this is the only lens this happened to it I used my previous 50LuxASPH 10 times more than this and never had aperture upgrades. I guess there is something wrong with some lenses' mechanical designs. I'm sure someone with more knowledge can enlighten us because really wanna know why this happens to >$5K lenses.

 

I had an f/0.88 Noctilux, but its performance was clearly superior at f/1.2. Most of my M lenses have extra openage, but none them work any better "all the way to the right."

 

The APO 50 is just as good at f/1.9 as it is at f/2.0

[250swb]

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Six out of six of my contemporary Leica lenses have an extra bit of movement beyond the final stop (at each end of the aperture scale).

 

Do I think this is a fault? Well what six out of six leads me to assume is that it is a part of the design and not something to cry about. Why would it be part of the design then? I don't know, it could be to allow for expansion or contraction of different metals in extreme weather, it could be a way of stopping older grease or dirt building up and blocking the final 'click', it could be a way of clearing stiff grease if it is very cold, it could simply be to take some strain off the aperture mechanism to make it last longer. Or, look at it another way, if your lens doesn't have an extra bit of movement maybe that is the faulty lens?

 

 

Steve

[leica lux]

Do people actually use their leica gear or just do inspections all day long?

 

I have another one:

Does your FLE makes some noise if you shake it slightly?

[M9reno]

Mine rattles like a snake.

[S Lam]

This is my first 5K lens. Naturally, I inspect it before using. Nice to know that mine is "not faulty" !!!

[jdlaing]

This is my first 5K lens. Naturally, I inspect it before using. Nice to know that mine is "not faulty" !!!

 

Not faulty at all.

 

The last "click" is actually a stop.

The second last "click" is the detent at 1.4