Thypoch Simera 50 mm f/1,4

[Mistral75]

Après un 28 mm et un 35 mm, Thypoch a annoncé le 20 août un troisième objectif Simera ouvrant à f/1,4, un 50 mm celui-ci :

Thypoch | Simera 50mm f/1.4 | Full-frame Prime Photo Lens

- cercle image 24x36
- angle de champ : 45°
- 8 lentilles, dont une lentille asphérique, une lentille en verre ED à faible dispersion et 3 lentilles en verre à indice de réfraction élevé,  en 6 groupes
- diaphragme à 14 lamelles
- bague de diaphragme décliquable
- distance minimale de mise au point : 45 cm
- rapport de reproduction maximum : 1:6,4 (0,16x)
- couplage avec le télémètre jusqu'à 70 cm, avec un point dur dans la bague de mise au point quand on passe en-dessous de cette distance
- visualisation de la profondeur de champ par une série incurvée de points de couleur qui apparaissent ou disparaissent lorsqu'on ferme ou ouvre la bague de diaphragme ; un système analogue, dénommé Visifocus, existait déjà sur les objectifs Kern-Paillard pour caméras Bolex des années 1950 et 1960
- fût en aluminium
- diamètre de filtre : 49 mm
- dimensions : 54 mm de diamètre maximal x 53 mm de longueur
- poids : 281 g
- deux finitions : noire ou argentée
- prix : 749 USD.

[Mistral75]

Essai élogieux du Thypoch Simera 50 mm f/1,4 par Fred Miranda :

Thypoch Simera 50mm f/1.4 ASPH. Review - FM Forums

The Simera 50mm f/1.4 ASPH. is the first Typoch lens I've had the chance to try, and after spending some time with it, I'm genuinely impressed. Before diving into its performance and comparing it to the Leica 50mm f/1.4 ASPH. Summilux, I couldn't help but notice how strikingly similar the optical design of the Simera is to the Leica's. While they're not identical, they follow a very similar design philosophy. But would this similarity translate into comparable image quality?

After extensive testing, including blind tests and side-by-side comparisons with the Leica, I can confidently say their output is very similar.

There are subtle differences in rendering, but as you can see from the comparisons, they are minor --- so much so that they may go unnoticed without a direct side-by-side comparison. Both lenses show very similar levels of axial chromatic aberration, which is a good sign for the Simera, as the Leica is well-regarded for its excellent chromatic correction. In terms of lateral chromatic aberration, however, the Simera performs notably better.

Both lenses show similar levels of distortion, field curvature, and optical vignetting, but the Simera shines in certain areas. For example, it has significantly better flare resistance, producing less veiling and ghosting. Its 14-blade aperture also creates more defined sunstars, and specular highlights remain perfectly round at smaller apertures --- something that's not always the case with the Leica's nonagonal aperture shape when stopped down.

In terms of resolution and contrast, at infinity distance, the Leica has a slight advantage in the center of the frame, while the Simera excels in the mid-zones. However, at a closer distance, such as the tested 2 meters, the Leica performs slightly better across the frame, including the mid-field. Ultimately, it comes down to personal preference, as the differences are minor and largely imperceptible in everyday use.

After spending time with the Simera, I can wholeheartedly recommend it. It offers performance on par with the Leica in terms of resolution and contrast, but it also excels in other areas, all at a more affordable price.

[Komm]

Eh ben... Ca c'est de la review, je ne m'y attendais pas mais tant mieux
Et pour ne rien gâcher, 268gr sur la balance...