Noctilux 75 and Summilux 75 comparison?

[LocalHero1953]

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4 hours ago, 3D-Kraft.com said:

I have both (the TTArtisan 90/1.25 and the 75mm Nocti) and would definitely not say "optically very close". The TTA 90/1.25 - although non-ASPH - performs surprisingly well and it is amazing, what a huge amount of glass and metal you get for that price tag, but in the "wide open" performance there is still quite a gap. You should also be aware of the fact, that you will have to calibrate the RF-coupling of that lens by yourself (it comes with a tool for that).

Here I made some (quite boring and technical) comparisons of the Sigma 85/1.4 DG DN Art, the TTA 90/1.25, the 75mm Noctilux and the 7Artisans 75/1.25 on a Sony A1: https://www.sonyalphaforum.de/topic/5433-bokeh-monster-portrait-brennweiten-mit-frontlinse-60mm/?do=findComment&comment=173758

The best performer is clearly the Sigma 85/1.4 but it lacks the "secret sauce" you find sometimes in the Noctilux shots.

The interesting thing on the TTA 90/1.25 was, that it performs better in the intrmediate area ("mid zone") and at the edges than in the center. I thought it was a special "feature" of my sample, but I saw this confirmed also in tests by others.

From your tests it looks like the Noctilux 75 has more in common with the Sigma 85/1.4 than the Summilux-M 75 - a modern sharpness and micro contrast in the focal plane, though differing in OOF areas. Is that a fair conclusion?

[3D-Kraft.com]

vor 16 Stunden schrieb anickpick:

Not true. The Voigtländer is slightly more compact and lighter than the Simera.

Sorry, you are right. The CV Nokton is about 20g lighter (but f/1.5 instead of f/1.4). I was tricked by the specs for the E- and Z-mounts, which weigh more.

vor 14 Stunden schrieb LocalHero1953:

From your tests it looks like the Noctilux 75 has more in common with the Sigma 85/1.4 than the Summilux-M 75 - a modern sharpness and micro contrast in the focal plane, though differing in OOF areas. Is that a fair conclusion?

Yes, the Sigma even has a little more micro contrast. It sometimes looks brutally sharp, so I find the Noctilux a little more flattering for portraits without it lacking in detail.

The Sigma can also render the bokeh a little softer than the Noctilux. With the Sigma it is almost impossible to produce any more "busy" structures in the out-of-focus areas. But it looks almost too perfect - and therefore rather characterless. In a blind test, I would be sure to recognize the signature of the Noctilux bokeh almost every time.

The only imperfection of the Sigma is some distortion - which is clearly visible in architectural shots - if no lens profile is applied in post-processing. I did'nt notice this with the Noctilux.

You can find lots of portraits shot by me with the Noctilux lately here: https://3d-kraft.com/index.php?option=com_content&view=article&id=206&catid=40&Itemid=2

 

[jto555]

On 3/3/2025 at 1:03 PM, 3D-Kraft.com said:

I have both (the TTArtisan 90/1.25 and the 75mm Nocti) and would definitely not say "optically very close". The TTA 90/1.25 - although non-ASPH - performs surprisingly well and it is amazing, what a huge amount of glass and metal you get for that price tag, but in the "wide open" performance there is still quite a gap. You should also be aware of the fact, that you will have to calibrate the RF-coupling of that lens by yourself (it comes with a tool for that).

Here I made some (quite boring and technical) comparisons of the Sigma 85/1.4 DG DN Art, the TTA 90/1.25, the 75mm Noctilux and the 7Artisans 75/1.25 on a Sony A1: https://www.sonyalphaforum.de/topic/5433-bokeh-monster-portrait-brennweiten-mit-frontlinse-60mm/?do=findComment&comment=173758

The best performer is clearly the Sigma 85/1.4 but it lacks the "secret sauce" you find sometimes in the Noctilux shots.

The interesting thing on the TTA 90/1.25 was, that it performs better in the intrmediate area ("mid zone") and at the edges than in the center. I thought it was a special "feature" of my sample, but I saw this confirmed also in tests by others.

Here is a portrait with the TTArtisian 90mm at F4. I would expect the Leica Nocti to be better but there is nothing wrong with this lens. 

J

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[3D-Kraft.com]

vor 8 Minuten schrieb jto555:

Here is a portrait with the TTArtisian 90mm at F4. I would expect the Leica Nocti to be better but there is nothing wrong with this lens.

Thanks for the example - and yes, there is nothing wrong with it. Excellent price-performance ratio (especially compared to the 75mm Noctilux).
For me, both are "keepers", but also difficult to compare.