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f/1.4 v4 11714

Big white speedbird

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The new lens coatings handle lights well.

 

Edited by FrozenInTime
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f/1.4 v4 11714 

Believe it or not, an essential item for aircraft maintanence :

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Flare is minimal when shooting into the setting sun ( even with variable ND )

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Near minimum focus f/1.4

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Here a bad photo, i.e. how not to use this lens, where the wide open foreground bokeh and corner smearing add up to an ugly rendering.

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44 minutes ago, FrozenInTime said:

Here a bad photo, i.e. how not to use this lens, where the wide open foreground bokeh and corner smearing add up to an ugly rendering.

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A little crop bottom and right will sort it.

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@pedaes @evikne you are both right - crop or stop down always technically better results.

Looking through old brochures Leica always described the Summilux as a high-speed reportage lens; modern use and presentation changes expectations. 

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I was seeing this reformulated lens required more deliberate use on film than its classic predecessors, so I was going out of my way to take images that would show it warts and all. No crop shows the worst case, and how much light bleed propagates beyond the frame for those who want an unmasked non-digital look. I've probably done enough of this, so  normal programming can resume.

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De Havilland Dragon Rapide and Heron

Just noticed in this one that the field curvature makes the far behind plane of focus corners sharper 

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35 minutes ago, FrozenInTime said:

De Havilland Dragon Rapide and Heron

Just noticed in this one that the field curvature makes the far behind plane of focus corners sharper 

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Takes me back to my school days in Edinburgh, when occasionally I used to fly to Turnhouse (Edinburgh) from Dalcross (Inverness) on a DH86. The Heron or sometimes a DC3 (BEA Pioneer) seemed very modern in comparison. 

Wilson

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Posted (edited)
17 minutes ago, wlaidlaw said:

Takes me back to my school days in Edinburgh, when occasionally I used to fly to Turnhouse (Edinburgh) from Dalcross (Inverness) on a DH86. The Heron or sometimes a DC3 (BEA Pioneer) seemed very modern in comparison. 

Wilson

My dad would also nostalgically recall flying around the highlands and islands, working for the HIDB, on the Dragon Rapide ... on his way to strike fear into the locals - the auditors are coming.

Edited by FrozenInTime
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  • 2 weeks later...

Silvanus at f/1.4

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Same at f/4

Sharper foreground and far less film gate bleed.

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Posted (edited)

f/1.4 unusual gate bleed effect at top of frame

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Edited by FrozenInTime
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On 2/26/2025 at 4:46 AM, Wipeout said:

Here is another example of the "glow'

 

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Hi...I am just a reader of M lens threads...and some of descriptions of the new 50mm lens are 'strange' to me. Point in case: not being sharp @ wide open is described as a 'glow'?'

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4 minutes ago, Genoweffa said:

Point in case: not being sharp @ wide open is described as a 'glow'?'

No, it's not.

(I won't attempt to explain "glow" because it'll only start an argument and there are plenty of threads on the forum that cover what people think glow is.)

Pete.

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24 minutes ago, farnz said:

No, it's not.

(I won't attempt to explain "glow" because it'll only start an argument and there are plenty of threads on the forum that cover what people think glow is.)

Pete.

We all the due respect, so is this lens sharp @ wide open or not ?

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36 minutes ago, Genoweffa said:

We all the due respect, so is this lens sharp @ wide open or not ?

This is not a non-answer but it depends what you mean by "sharp".  There is no measurable quality of "sharpness" so it's a subjective quality and will vary depending on the person looking at a picture.

The quality that is called "sharpness" is a combination of various things such as resolution (detail separation), contrast (bright/dark), acutance, and clarity and is affected by under- or overexposure.  The picture of the daffodils is unfortunately a little underexposed so it's not clear where the plane of focus lies although it looks to be at the closest edge of the yellow 'trumpet' in the middle.

In my experience of using it, the lens easily has enough contrast and resolution, which is what Leica lens designers strive for but which produces a gentler gradient between in-focus and out of focus and between bright and dark objects (often called micro-contrast).  On the other hand Zeiss's lens designers strove to maximise these gradients to produce harsher acutance presumably because that's what Zeiss believed its customers wanted.  Leica's customers apparently preferred gentler transitions, which means there's a choice.

All I can say about the 'retro' 50/1.4 Summilux pre-asph v4 is that is sufficiently 'sharp' for my requirements but perhaps not as 'eye-cuttingly sharp' as the 50/1.4 Summilux asph v2. 

I hope the above helps.

Pete.

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59 minutes ago, Genoweffa said:

We all the due respect, so is this lens sharp @ wide open or not ?

The samples and MTF curves show that it is sufficiently* sharp and contrasty in the centre, but the corners suffer a lot from field curvature and other flaws, so you need to manage the image content or stop down a lot. * I have only tested on B&W film; if you want 60 Mpixels resolution corner - corner, this is likely not your lens.

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2 minutes ago, FrozenInTime said:

The samples and MTF curves show that it is sufficiently* sharp and contrasty in the centre, but the corners suffer a lot from field curvature and other flaws, so you need to manage the image content or stop down a lot. * I have only tested on B&W film; if you want 60 Mpixels resolution corner - corner, this is likely not your lens.

Thank you.

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