Summilux-M 50mm f1.4 center sharpness

[SudaliuS]

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Hello, guys!
I have purchased used Summilux-M 50mm (pre-last version) and have read a lot about it's sharpness in the center of the picture, even on F1.4
But when I made some pictures with long distance (approx. 2km) I was  very dissapointed with result. Center is far avay from the sharpness, or may be because it's 60mp of the M11, I don't know.
If you have this lens, what about center sharpness on wide open?
If I'm making f4 the picture became quite sharp.

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[jaapv]

It does not focus to infinity - have it adjusted.

[Maarten]

Since you were having problems with a Summarit 35mm lens as well, I suggest having your new lens and camera checked.
Both the Summarit and Summilux should be tack-sharp in center at infinity. When both lenses disappoint, the camera might be the culprit as well.

[evikne]

I'm not quite sure what you mean with "pre-last version". Is that the ASPH v1 (11891)?

Whatever the version, this is far from what I would expect.

[lct]

You may wish to focus in LV mode with focus magnification. Do you see a difference then?

[SudaliuS]

2 hours ago, lct said:

You may wish to focus in LV mode with focus magnification. Do you see a difference then?

In rangefinder on some far vertical buildings I see that lens turned not enough into infinity mode. It's like should be turned a little bit left more.
And not enough focus peaking red color in the center of the image in LV mode

[lct]

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6 minutes ago, SudaliuS said:

In rangefinder on some far vertical buildings I see that lens turned not enough into infinity mode. It's like should be turned a little bit left more.
And not enough focus peaking red color in the center of the image in LV mode

I would forget about infinity if the building stands at less than, say, 1,000m from you. When you focus on those windows, for instance, do they appear as soft as on the crop below?

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[SudaliuS]

1 hour ago, lct said:

When you focus on those windows, for instance, do they appear as soft as on the crop below?

This windows a too far and small in rangefinder. I do not remember

[lct]

58 minutes ago, SudaliuS said:

This windows a too far and small in rangefinder. I do not remember

You may wish to shoot again and focus on those windows, or a similar subject matter, without using the infinity marking of the lens.

[darylgo]

I returned a lens that wouldn’t focus to infinity despite being repaired, same version, perhaps you got it.  As suggested, use live view or evf to check focus is proper.  Camera shake could also diminish sharpness in the center as well as overall.  

Edited August 13, 2024 by darylgo

[Jon Warwick]

9 hours ago, SudaliuS said:

Hello, guys!
I have purchased used Summilux-M 50mm (pre-last version) and have read a lot about it's sharpness in the center of the picture, even on F1.4
But when I made some pictures with long distance (approx. 2km) I was  very dissapointed with result. Center is far avay from the sharpness, or may be because it's 60mp of the M11, I don't know.
If you have this lens, what about center sharpness on wide open?
If I'm making f4 the picture became quite sharp.
 

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Is that an image of the whole frame, or just a centre crop?
 

If the former, is anything closer to the camera better in focus when your lens is turned to infinity?

 

[costa43]

If your m11 works well at infinity with your other lenses then the Summilux needs adjusting, no other outcome really as the quality of this lens wide open is comparable to any other lens ever made for m mount. If other lenses are struggling at infinity then your rangefinder may need adjusting. It's usually one or the other, or for some unfortunates, both!

 

[MalcB]

Do you have a clear view to this scene, or are you shooting through a window?

[SudaliuS]

42 minutes ago, MalcB said:

Do you have a clear view to this scene, or are you shooting through a window?

This is full image at F1.4
Focus in the center
https://postimg.cc/N21QvBrs

F2.0 is way better already in the center
https://postimg.cc/gLwNx2Kp

And F2.8 looks pretty sharp
https://postimg.cc/MnwmSDgq

Edited August 14, 2024 by SudaliuS

[lct]

5 minutes ago, SudaliuS said:

This is full image at F1.4
Focus in the center
https://postimg.cc/N21QvBrs

OK but how did you focus? Did you simply set your lens to infinity? Just to understand your issue.

Edited August 14, 2024 by lct

[SudaliuS]

16 minutes ago, lct said:

OK but how did you focus? Did you simply set your lens to infinity? Just to understand your issue.

Yes, just set the lens to infinity. If I try set it closer - picture begin looks very blurry. I mean picture in rangefinder, live view and the final file

Edited August 14, 2024 by SudaliuS

[SudaliuS]

On my previos Biogon 35mm 2.8 I had no problems with sharpness in the center.

F2.8
https://postimg.cc/ZWBP652s

[lct]

42 minutes ago, SudaliuS said:

Yes, just set the lens to infinity [...]

You might wish to refrain from doing this, in order to check if there is anything faulty in your lens and/or rangefinder. Just focus on a detail (a window for example) in LV mode with focus magnification.

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Hallo,

Look here: Leica M

[lct]

40 minutes ago, SudaliuS said:

On my previos Biogon 35mm 2.8 I had no problems with sharpness in the center.

F2.8
https://postimg.cc/ZWBP652s

The DoF of a 35mm lens at f/2.8 is not the same as a 50mm lens at f/1.4. Please try to focus the way i suggested above and tell us the result you've got.

[SudaliuS]

1 hour ago, lct said:

You might wish to refrain from doing this, in order to check if there is anything faulty in your lens and/or rangefinder. Just focus on a detail (a window for example) in LV mode with focus magnification.

So, that's what I see in LV mode.
At 1.4 I don't see green color at all. And building is blurry.

At 2.8 I see green color and far buiding is sharper

 

 

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