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Voigtlander 40mm f/1.2 Nokton Review

Steve Spencer
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p.282 #1 · p.282 #1 · Voigtlander 40mm f/1.2 Nokton Review

Ripolini wrote:
I rounded FL to the second significant figure. The decimal has no sense. Actually, lens manufactures never give FLs with a decimal figure

Sometimes manufactures do report the focal length to the tenth of a mm. Zeiss does in many of their data sheets which was often different from what was printed on the lens, which was rounded (usually appropriately) to the nearest 5mm (ultrawide angle lens are typically rounded to the closest 1mm).

If one wanted to be precise, (which is probably overkill) if Voigtlander is measuring the angle of view properly and rounding appropriately the 40 f/1.2 is between 41.2 and 42.0mm in focal length. Because they provide more precision (an extra decimal point) in measurement of the angle of view of the 50 f/1.2, then the focal length should be 49.2mm. So no, they don't round to the closet mm when reporting the focal length of the lens, but they do round to the nearest 5mm, which is exactly what manufacturers have done for a long time with focal lengths close to normal.

Sep 17, 2023 at 12:26 PM

Ripolini
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p.282 #2 · p.282 #2 · Voigtlander 40mm f/1.2 Nokton Review

Steve Spencer wrote:
Sometimes manufactures do report the focal length to the tenth of a mm. Zeiss does in many of their data sheets which was often different from what was printed on the lens, which was rounded (usually appropriately) to the nearest 5mm (ultrawide angle lens are typically rounded to the closest 1mm).

Yes. I know. You're referring to this kind of data sheets:

Steve Spencer wrote:
If one wanted to be precise, (which is probably overkill) if Voigtlander is measuring the angle of view properly and rounding appropriately the 40 f/1.2 is between 41.2 and 42.0mm in focal length. Because they provide more precision (an extra decimal point) in measurement of the angle of view of the 50 f/1.2, then the focal length should be 49.2mm. So no, they don't round to the closet mm when reporting the focal length of the lens, but they do round to the nearest 5mm, which is exactly what manufacturers have done for a long time with focal lengths...Show more →

You know, when I write 41 mm (or 42 mm) I mean that the uncertainty is of the order of the mm (+/- 1 mm, or even more).
What manufactures round to the nearest 5mm (with few exceptions, see the Zeiss data sheet above) is the FL at "infinity". They rarely tell to their customers the FL at "real", finite distances, i.e., when the subject is photographed with a size > 0 (mathematically, a subject at infinite distance is not visible in the image).
Therefore, coming back to the Voigt 40/1.2, how does its AoV (and FL) change with distance? Who knows?
And how does change the AoV of the 50/1.2 in real shooting conditions? Comparing AoV and FL at infinity only could not provide the answer to the question: Is it worth getting both 40/1.2 and 50/1.2?
This is especially true for macro lenses. Why advertise that a "macro" lens has a 105 mm focal length if it's actual FL at 1:1 is a mere 50 mm??
I guess not all people buying a modern macro lens are aware of what they get home.

Sep 17, 2023 at 01:14 PM

Steve Spencer
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p.282 #3 · p.282 #3 · Voigtlander 40mm f/1.2 Nokton Review

Ripolini wrote:

Yes. I know. You're referring to this kind of data sheets:


	https://download.nikonimagespace.com/22629f86b3a1b26ed2d46b3890e8d95e/ZeissMilvus_MacroMetrics.jpg

You know, when I write 41 mm (or 42 mm) I mean that the uncertainty is of the order of the mm (+/- 1 mm, or even more).
What manufactures round to the nearest 5mm (with few exceptions, see the Zeiss data sheet above) is the FL at "infinity". They rarely tell to their customers the FL at "real", finite distances, i.e., when the subject is photographed with a size > 0 (mathematically, a subject at infinite distance is not visible in the image).
Therefore, coming back to the Voigt 40/1.2,...Show more →

Although we don't know the exact focal length at closer focus distances, lenses typically do not change much from 1:6 or 1:8 magnification to infinity. We see that in the two Zeiss lenses in your table. Since the Voigtlander 40 f/1.2 has a max magnification of 1.6.2 and the 50 f/1.2 has a max magnification of 1:7, we can be fairly confident that through their whole focussing distance they won't deviate much from the 41 to 42 mm for the 40 f/1.2 and the 49mm with the 50 f/1.2. Is that different enough for one to want both lenses? That, IMO, depends a lot on the specific user. For me, I decided I didn't want both but others could certainly make a different decision.

Sep 17, 2023 at 04:29 PM

Ripolini
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p.282 #4 · p.282 #4 · Voigtlander 40mm f/1.2 Nokton Review

Steve Spencer wrote:
Although we don't know the exact focal length at closer focus distances, lenses typically do not change much from 1:6 or 1:8 magnification to infinity. We see that in the two Zeiss lenses in your table.....

It depends on the specific lens. Focus breathing affected substantially the Nikkor AF-S 70-200/2.8G VR II at the long end: FL changed from 200 mm, at infinity, to 138 mm at the MFD (-31%). Moreover, if we look at the data I plotted above, we see that the Nikkor Z 105/2.8 MC changes FL from 102,9 mm at infinity to 91.4 mm at 1:6.43 (-11%), while the Nikkor AF-S 105/2.8G VR changes FL from 103.97 at infinity to 103.51 mm at 1:6.55 (- 0.54%). With no information, we can't draw any meaningful conclusion.

Sep 18, 2023 at 01:22 AM

Steve Spencer
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p.282 #5 · p.282 #5 · Voigtlander 40mm f/1.2 Nokton Review

Ripolini wrote:
It depends on the specific lens. Focus breathing affected substantially the Nikkor AF-S 70-200/2.8G VR II at the long end: FL changed from 200 mm, at infinity, to 138 mm at the MFD (-31%). Moreover, if we look at the data I plotted above, we see that the Nikkor Z 105/2.8 MC changes FL from 102,9 mm at infinity to 91.4 mm at 1:6.43 (-11%), while the Nikkor AF-S 105/2.8G VR changes FL from 103.97 at infinity to 103.51 mm at 1:6.55 (- 0.54%). With no information, we can't draw any meaningful conclusion.

You are giving examples of macro lenses and zooms with fairly short MFD. I don't think you will find examples of normal primes with 1:6 or 1:8 maximum magnification that show anything like what you are describing.

Sep 18, 2023 at 06:29 AM

grahamgibson
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p.282 #6 · p.282 #6 · Voigtlander 40mm f/1.2 Nokton Review

Streets of Nice by Graham Gibson, on Flickr

Debbie in Nice by Graham Gibson, on Flickr

Nice entertainment by Graham Gibson, on Flickr

Taking in the sights by Graham Gibson, on Flickr

Sep 18, 2023 at 11:28 AM

patotts
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p.282 #7 · p.282 #7 · Voigtlander 40mm f/1.2 Nokton Review

That 1st portrait (of your wife?), @grahamgibson, is lovely. Well done.

Now how do you get your wife to stand still and smile for a photo? I've been trying for 20+ yrs ;-)

Sep 18, 2023 at 01:47 PM

grahamgibson
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p.282 #8 · p.282 #8 · Voigtlander 40mm f/1.2 Nokton Review

patotts wrote:
That 1st portrait (of your wife?), @grahamgibson@, is lovely. Well done.

Now how do you get your wife to stand still and smile for a photo? I've been trying for 20+ yrs ;-)

Hahah, thank you. Some days she has the patience for it...

Actually, for quick captures like this it helps that I shoot this lens with the Techart adapter now.

Sep 18, 2023 at 06:19 PM

akul
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p.282 #9 · p.282 #9 · Voigtlander 40mm f/1.2 Nokton Review

A small suspension bridge. I quite like this bridge.

Luka

NIKON Z 6 40 mm f/1.2 lens 40mm f/8.0 1/30s 200 ISO 0.0 EV

Sep 18, 2023 at 09:35 PM

jowul
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p.282 #10 · p.282 #10 · Voigtlander 40mm f/1.2 Nokton Review

some forest images

comp_DSC07665-2 by Joachim Wulfers, on Flickr

comp_DSC07661-2 by Joachim Wulfers, on Flickr

comp_DSC07671-2 by Joachim Wulfers, on Flickr

Sep 19, 2023 at 01:22 PM

akul
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p.282 #11 · p.282 #11 · Voigtlander 40mm f/1.2 Nokton Review

From Rhode Island trip this summer.

Luka

Beach boogie woogie

NIKON Z 6 40 mm f/1.2 lens 40mm f/1.2 1/8000s 100 ISO 0.0 EV

Memory of summer

NIKON Z 6 40 mm f/1.2 lens 40mm f/1.2 1/8000s 63 ISO 0.0 EV

Beach scene

NIKON Z 6 40 mm f/1.2 lens 40mm f/1.2 1/1250s 100 ISO 0.0 EV

Pier

NIKON Z 6 40 mm f/1.2 lens 40mm f/1.4 1/4000s 100 ISO 0.0 EV

Lamp

NIKON Z 6 40 mm f/1.2 lens 40mm f/1.2 1/4000s 100 ISO 0.0 EV

Sep 19, 2023 at 08:41 PM

Lukacs
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p.282 #12 · p.282 #12 · Voigtlander 40mm f/1.2 Nokton Review

Because of the kids, I ended up buying an AF fast 35mm lens. I love my 40 1.2, and if I have the time to MF it produce stellar images, also it's another level the procedure of taking picture, composing, focusing, I feel lot more connection, more photography. But I've just taken my ZF 35 2.8 more and more for family pictures because of the AF. So I decided to get a used prime for a try, I hesitated between 35GM and 35 1.2 Art. I found an Art significant cheaper than GM (it is very popular lens, barely found here a used and it's gone after few days), also after the Voigtlander I'd always have a desire for that f1.2 bokeh.
So I got the 35 1.2 Art, my first impression was it is damn huge lens, my 40 1.2 simply dwarfed compared. I took it quickly to take some pictures. No need to look into EVF, no need for rotating focus ring, moving joystic to hunt for my constantly moving daughter's eye. Eye-tracking AF just works.
Beside AF, I simply blown away from image quality. It's an insane lens, razor sharp at 1.2, still has butter smooth bokeh. I amazed how good optically, better than 40 1.2 in every aspect, it's like MF images with paper thin DOF and sharp corner to corner, barely visible CA and high contrast. I'm considering to sell the Voigtlander (however I still in love), also I want to pass 21 3.5 skopar, 15 4.5 (barely using this focal length), Samyang 75 1.8 and rebulid my kit with the 35 1.2, Voigt. 21 1.4 and 85 1.4 Art. Anyway I wonder if anybody moved from 40 1.2 to 35 1.2 Art, and what was the long term impression.

Sep 20, 2023 at 01:52 AM

sandycrane
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p.282 #13 · p.282 #13 · Voigtlander 40mm f/1.2 Nokton Review

There's a discussion on this over at DPReview.

https://www.dpreview.com/forums/thread/4728181

Sep 20, 2023 at 07:56 AM

nbaronzzi
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p.282 #14 · p.282 #14 · Voigtlander 40mm f/1.2 Nokton Review

I actually went the opposite direction and moved from a razor-sharp, autofocusing, well-corrected 35 (the GM) to the Nokton.

Sep 20, 2023 at 11:17 AM

grahamgibson
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p.282 #15 · p.282 #15 · Voigtlander 40mm f/1.2 Nokton Review

Voigtlander 40/1.2 in Nice, France

A bite to eat by Graham Gibson, on Flickr

Nice promenade by Graham Gibson, on Flickr

Sep 20, 2023 at 11:57 AM

nbaronzzi
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p.282 #16 · p.282 #16 · Voigtlander 40mm f/1.2 Nokton Review

Ascending the Beehive Trail in Acadia National Park

ILCE-7M3 Voigtlander NOKTON 40mm F1.2 Aspherical lens 40mm f/4.5 1/250s 100 ISO 0.0 EV

ILCE-7M3 Voigtlander NOKTON 40mm F1.2 Aspherical lens 40mm f/2.0 1/3200s 100 ISO -0.3 EV

Sep 20, 2023 at 09:04 PM

grahamgibson
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p.282 #17 · p.282 #17 · Voigtlander 40mm f/1.2 Nokton Review

Nice flower market

Market flowers by Graham Gibson, on Flickr

Sep 21, 2023 at 11:29 AM

RexGig0
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p.282 #18 · p.282 #18 · Voigtlander 40mm f/1.2 Nokton Review

patotts wrote:
Now how do you get your wife to stand still and smile for a photo? I've been trying for 20+ yrs ;-)

Trying to get your wife of 20+ years to stand still, or still searching, after 20+ years, for such a wife?

Well, in my case, I found a wife who was already a serious photographer, before I met her. She does not, however, want me to post images of her, that are publicly viewable, so, the problem still exists, just on a different level. Notably, she was the one who finally convinced me to become serious about photography. Until then, I was more into nice binoculars. She expanded my interest toward interchangeable-lens cameras, though it took some time, and I expanded her photographic interests to include birds, wildlife, native plants, and nature, in general.

Notably, my girlfriend, before I met my future wife, had primed me to like female photographers. This girlfriend was already artistic, in several mediums, but could not afford a serious camera. I bought her a better camera. I hope that she is still being creative, today…

Sep 21, 2023 at 12:59 PM

catacore
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p.282 #19 · p.282 #19 · Voigtlander 40mm f/1.2 Nokton Review

This must be one of the longest threads here, on FM forum, and I guess this lens just deserves it.

Sure enough, I went through all these pages before committing to buy the SE version of this lens.

Then, after being underwhelmed by the A7C II/R releases, I finally decided than I can manually focus this lens on my A7C, and the Nokton can be part of my lightweight travel kit alongside Sigma 90i.

Therefore, I would need an AF fast lens for when AF is needed (not that often, though) in this "normal" focal range, and my very first option was set for the 50/1.2 GM which I liked a lot for the brief period of time when I had it.

So if there is someone who own/have owned both those lenses and would care to write few words here about how they compare, that would be much appreciated. I guess the GM lens' price is what actually makes me give it another thought and hold me back of just purchasing it given it won't see much use actually (only for when I need to chase "moving targets", which is not that often for me).

Sep 22, 2023 at 11:26 AM

nbaronzzi
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p.282 #20 · p.282 #20 · Voigtlander 40mm f/1.2 Nokton Review

Went to see a friend's new dog... with my manual focus lens, naturally

ILCE-7C Voigtlander NOKTON 40mm F1.2 Aspherical lens 40mm 1/320s 100 ISO -0.3 EV

ILCE-7C Voigtlander NOKTON 40mm F1.2 Aspherical lens 40mm 1/640s 100 ISO 0.0 EV

ILCE-7C Voigtlander NOKTON 40mm F1.2 Aspherical lens 40mm 1/1250s 100 ISO -0.3 EV

ILCE-7C Voigtlander NOKTON 40mm F1.2 Aspherical lens 40mm 1/500s 100 ISO -0.3 EV

Sep 22, 2023 at 11:46 PM

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