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Voigtlander 40mm f/1.2 Nokton Review

SharpContrast
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p.40 #1 · p.40 #1 · Voigtlander 40mm f/1.2 Nokton Review

I've started a Flickr group for the m-mount version of this lens.
Hope you don't mind me putting the address in the forum Fred? Ill remove it if you do.

There are size comparison pics with the e-mount version, 35mm ultron and C-Sonnar.

https://www.flickr.com/groups/4178749@N24/pool/

Nov 25, 2017 at 06:09 AM

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

SharpContrast wrote:
I've started a Flickr group for the m-mount version of this lens.
Hope you don't mind me putting the address in the forum Fred? Ill remove it if you do.

There are size comparison pics with the e-mount version, 35mm ultron and C-Sonnar.

https://www.flickr.com/groups/4178749@N24/pool/

I don't want to be that person, but I think there is something wrong with either your lens or the adapter. Several images have no focus anywhere, or are extremely unsharp compared to anything I've seen from my copy (FE mount though).
It could be because of the sensor stack. Very fast lenses will be affected even in the middle of the frame. But we don't know yet if the optical design is identical between FE and VM versions.

https://www.flickr.com/photos/143385549@N02/24753187198/sizes/o/
https://www.flickr.com/photos/143385549@N02/24753193798/sizes/o/

Edit: Some images look sharp though, so perhaps it's just the TAP that can't focus properly at f/1.2?

Nov 25, 2017 at 06:24 AM

SharpContrast
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p.40 #3 · p.40 #3 · Voigtlander 40mm f/1.2 Nokton Review

Makten wrote:
I don't want to be that person, but I think there is something wrong with either your lens or the adapter. Several images have no focus anywhere, or are extremely unsharp compared to anything I've seen from my copy (FE mount though).
It could be because of the sensor stack. Very fast lenses will be affected even in the middle of the frame. But we don't know yet if the optical design is identical between FE and VM versions.

https://www.flickr.com/photos/143385549@N02/24753187198/sizes/o/
https://www.flickr.com/photos/143385549@N02/24753193798/sizes/o/

Edit: Some images look sharp though, so perhaps it's just the TAP that can't focus properly at f/1.2?

The lens is fine and optically it is the same design to the e-mount.
Those pictures were taken very quickly with the TAP and I also used silent shutter mode, so it's not surprising there not better espeicaly with the shallow depth of field of f1.2!
I'll try and take some better quality pics later for you 😀

Nov 25, 2017 at 06:39 AM

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

SharpContrast wrote:
The lens is fine and optically it is the same design to the e-mount.
Those pictures were taken very quickly with the TAP and I also used silent shutter mode, so it's not surprising there not better espeicaly with the shallow depth of field of f1.2!
I'll try and take some better quality pics later for you 😀

No need to take better images for my sake! I already have the lens and I'm happy with it. Was just confused why your images looked so much softer. I'm using an a7II though, but that's not enough resolution difference to explain it.

It looks like the size is quite a bit nicer on the VM, I must admit.

But I'm not sure about the "same design", especially since Voigtländer claimed it's not. Why would they state something like that for no reason?

Nov 25, 2017 at 06:43 AM

SharpContrast
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p.40 #5 · p.40 #5 · Voigtlander 40mm f/1.2 Nokton Review

It is the same, its just the e-mount has been optimised for the thick sensor.

Obviously e-mount is optically better for e-mount, but there's not much in it.
I'll do some comparisons soon.

https://www.google.co.uk/amp/s/leicarumors.com/2017/10/19/voigtlander-nokton-40mm-f1-2-aspherical-lens-for-leica-m-mount-officially-announced.aspx/amp/

Edited on Nov 25, 2017 at 10:47 AM · View previous versions

Nov 25, 2017 at 06:53 AM

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

SharpContrast wrote:
It is the same, its just the e-mount has been optimised for the thick sensor.

I think the e-mount is optically better for e-mount, but there's not much in it.
I'll do some comparisons soon.

https://www.google.co.uk/amp/s/leicarumors.com/2017/10/19/voigtlander-nokton-40mm-f1-2-aspherical-lens-for-leica-m-mount-officially-announced.aspx/amp/

Then it's not the same.

The fact that it looks the same doesn't mean anything. The Loxia 35 looks exactly the same as the ZM 35, but it's not. They perform totally different.

Nov 25, 2017 at 06:59 AM

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

My last test I wanted to do with this lens, a mountain panorama (11 pictures).

If you want to see the picture at full size: https://c1.staticflickr.com/5/4538/26793327049_404a64cd3e_o.jpg

Innerschweiz from Schwändiliflue

Nov 25, 2017 at 09:28 AM

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

SharpContrast wrote:
It is the same, its just the e-mount has been optimised for the thick sensor.

Obviously e-mount is optically better for e-mount, but there's not much in it.
I'll do some comparisons soon.

Well, if they did optimize it for E mount they did a poor job as it's easily the weakest lens in the Loxia lineup.

Nov 25, 2017 at 11:06 AM

Fred Miranda
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p.40 #9 · p.40 #9 · Voigtlander 40mm f/1.2 Nokton Review

It would be nice to see a side by side comparison at infinity and close distance.
When the CV 15/4.5 III E-mount came out there was chatter that it was the same design but "optimized" for the Sony sensor stack but in reality, it wasn’t.

SharpContrast wrote:
It is the same, its just the e-mount has been optimised for the thick sensor.

Obviously e-mount is optically better for e-mount, but there's not much in it.
I'll do some comparisons soon.

https://www.google.co.uk/amp/s/leicarumors.com/2017/10/19/voigtlander-nokton-40mm-f1-2-aspherical-lens-for-leica-m-mount-officially-announced.aspx/amp/

Nov 25, 2017 at 11:19 AM

Fred Miranda
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p.40 #10 · p.40 #10 · Voigtlander 40mm f/1.2 Nokton Review

True, but the Lox 35 was better on the E-mount compared to the ZM version. The optical design was tweaked for this one and that's obvious when comparing their design diagrams.

jhinkey wrote:
Well, if they did optimize it for E mount they did a poor job as it's easily the weakest lens in the Loxia lineup.

Nov 25, 2017 at 11:20 AM

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

Okay I know this isn't the most accurate test for comer sharpness between m -mount and e- mount but again I was short on time.
It's an uneven surface and I was using a techart( manual focusing) and the exposures are different but i still think it shows that the m-mount isn't that much worse compared to e-mount.

E

https://www.flickr.com/photos/143385549@N02/38604958122/in/dateposted-public/

M

https://www.flickr.com/photos/143385549@N02/38604958122/in/dateposted-public/

Nov 25, 2017 at 11:30 AM

Fred Miranda
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p.40 #12 · p.40 #12 · Voigtlander 40mm f/1.2 Nokton Review

SharpContrast wrote:
Okay I know this isn't the most accurate test for comer sharpness between m -mount and e- mount but again I was short on time.
It's an uneven surface and I was using a techart( manual focusing) and the exposures are different but i still think it shows that the m-mount isn't that much worse compared to e-mount.

E

https://www.flickr.com/photos/143385549@N02/38604958122/in/dateposted-public/

M

https://www.flickr.com/photos/143385549@N02/38604958122/in/dateposted-public/

Thanks for this comparison. If they were both focused perfectly, it looks like the E-mount version is definitely superior everywhere in the frame, including center.

Nov 25, 2017 at 11:36 AM

Fred Miranda
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p.40 #13 · p.40 #13 · Voigtlander 40mm f/1.2 Nokton Review

Here is a sample showing how sharp the E-mount version can be even at close distance:

Nov 25, 2017 at 11:38 AM

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

Fred Miranda wrote:
Thanks for this comparison. If they were both focused perfectly, it looks like the E-mount version is definitely superior everywhere in the frame, including center.

Fred I wish I had time to do this properly!
I believe they are equally sharp for most of the frame, it's just the corners where it loses out. I'll make time on Monday to try and prove this 😀

Nov 25, 2017 at 11:51 AM

Fred Miranda
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p.40 #15 · p.40 #15 · Voigtlander 40mm f/1.2 Nokton Review

SharpContrast wrote:
Fred I wish I had time to do this properly!
I believe they are equally sharp for most of the frame, it's just the corners where it loses out. I'll make time on Monday to try and prove this 😀

From your sample, the difference is not small. Here is the center, mid-zone and extreme edge comparison crops:

CENTER

MID-ZONE

EXTREME EDGE

Nov 25, 2017 at 12:03 PM

Charlie N
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p.40 #16 · p.40 #16 · Voigtlander 40mm f/1.2 Nokton Review

SharpContrast wrote:
Fred I wish I had time to do this properly!
I believe they are equally sharp for most of the frame, it's just the corners where it loses out. I'll make time on Monday to try and prove this 😀

loses out is an understatement. In fact both are quite poor, likely a DOF issue.

Nov 25, 2017 at 12:05 PM

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

Fred Miranda wrote:
From your sample, the difference is not small. Here is the center, mid-zone and extreme edge comparison crops:

this could just be a focus difference, but this makes me excited that the m-mount version might actually be optimized for the thinner sensor.

Nov 25, 2017 at 01:00 PM

Fred Miranda
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p.40 #18 · p.40 #18 · Voigtlander 40mm f/1.2 Nokton Review

sebboh wrote:
this could just be a focus difference, but this makes me excited that the m-mount version might actually be optimized for the thinner sensor.

Yeap, it could work well on your Kolari body.

Nov 25, 2017 at 01:45 PM

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

Looking into the rear of the Nokton, it's obvious that the exit pupil is quite close to the sensor. Which in my opinion makes it very, very unlikely that the optical design would be the same for the VM and the E versions. At f/1.2 even the middle of the frame will be affected by the sensor filter stack, so a compromise to get it working between both FE and M would probably make performance poor.
It's not impossible that they are the same, but unlikely. We'll see.

At smaller max apertures and shorter focal lengths, the problem is mostly curvature of field. That would be the reason for the 15/4.5 working on both FE and M sensors. But I bet you could tweak them to be even better on each sensor.

----------------

Two wide open with the E on a7II from a couple of hours ago. As you can see, the bokeh can be terrible towards the corners at certain distances. Again, I think it's the transition zone that plays tricks. If the background is far away enough (with the same focus distance), the corners are much better.

French kiss by Martin Hertsius, on Flickr

2296 by Martin Hertsius, on Flickr

On the other hand; what other lens is this sharp at f/1.2? None that I have ever heard or seen of!

Nov 25, 2017 at 02:49 PM

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

Just sharing a couple of landscape/woodland type shots I managed to squeeze in. Was kind of rushed in taking them but I'm very pleased with the colours and sharpness in the zone of focus. I would normally shoot photos like these at F8-F11 but I decided to try F5.6 to 7.1 just because.

Nov 26, 2017 at 01:40 AM

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