Φακοί Cosina, Voigtlander, Zeiss κλασσικοί και νεότεροι

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Cosina officially announces the Voigtlander NOKTON RF 75mm f/1.5​



The new lens will be available in April for ￥135,000 ($900 USD).




The NOKTON 75mm F1 .5 Aspherical RF mount is a large-aperture medium-telephoto lens for full-frame mirrorless cameras with Canon RF mount. Despite its large aperture with a maximum aperture of F1.5, it is both compact and high-performance. By adopting an aspherical lens, excellent descriptive power is demonstrated from the wide aperture.




Implemented with an optical system optimized for the image sensor of a mirrorless camera that uses a Canon RF mount. This lens has a full-frame image circle and can be used with both full-frame and APS-C mirrorless cameras.



The lens mount is equipped with electronic contacts to enable telecommunication between the lens and the body. In combination with the body of the Canon EOS R system, it supports Exif information, in-body image stabilization (3-axis), and three types of focus assist functions (magnification, peaking, and focus guide).



The all-metal helicoid unit, which is machined and adjusted with high precision, and the use of high-quality grease that produces moderate torque, achieve smooth focusing with a sense of operation. It allows for subtle focus adjustment.



Although it is a large-aperture lens with a maximum aperture of F1.5, the minimum aperture can be set up to F32. At f/1.5 with the maximum aperture, you can enjoy a large bokeh, while at f/32 at the smallest aperture, you can get deep focus.



In order to make the holes formed by the diaphragm blades closer to a circular shape, a 12-element diaphragm is adopted. The out-of-focus part is a natural depiction, and the point light source is not a polygon, but a round and soft bokeh.



The aperture ring has a click switching mechanism, and it is possible to open and close the aperture steplessly without being affected by clicks when recording videos or adjusting the fine depth of focus
 
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Voigtländer Nokton 50mm F1.0 E-Mount Review | Voigtländer's Most Extreme Lens​

Dustin Abbott
 
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www.thephoblographer.com

This Voigtlander Portrait Lens Lets You Control Bokeh

Voigtlander has many exceptional lenses under its belt. Here is a look at a new portrait lens that can just become your new companion.
www.thephoblographer.com www.thephoblographer.com


However, Voigtlander is not the first company to achieve this. But rather, Petzval, who used a control ring to work around the swirling bokeh effect. Here are the specs:

  • Mount: Sony E
  • Aperture Ratio: 1:1.8
  • Minimum Aperture: F11
  • Lens Construction: 6 elements in 3 groups
  • Angle of View: 33.2°
  • Aperture Blade: 9
  • Minimum Focus: 0.7m
  • Maximum Reproduction Ratio: 1:7.4
  • 5-Axis Image Stabilization: Possible (only on camera body with 5-Axis Image Stabilization)
  • Diameter × Length: φ70.0×88.0mm
  • Filter Size: φ62mm
  • Weight: 560g

PORTRAIT HELIAR 75mm F1.8 - 株式会社コシナ

cosina - description
www.cosina.co.jp



Ο PORTRAIT HELIAR 75mm F1.8 είναι ο πρώτος φακός της Voigtländer με ελεγχόμενη σφαιρική εκτροπή, δίνοντας στους φωτογράφους αυθαίρετο έλεγχο της υποδιόρθωσης και της υπερδιόρθωσης της σφαιρικής εκτροπής για την παραγωγή μιας μεγάλης ποικιλίας εκφράσεων bokeh.


1748085316929.png​
 
Αφού μιλάμε για πορτρετίστες να δώσω και ένα ακόμη τιπ (το πρώτο ήταν να δοκιμάσει φακούς 3 στοιχείων από 1930s--50s) για αυτόν που του αρέσουν τα πειράματα, θέλει να παίξει και δε θέλει να δίνει χιλιάρικα.

Ελεγχόμενη σφαιρική εκτροπή μπορεί να έχει και με ένα από τους φακούς που προανέφερα και ήταν έτσι κατασκευασμένος ώστε να εστιάζει με μετακίνηση του εμπρός στοιχείου, δλδ οι περισσότερες των περιπτώσεων τότε σε αυτές τις φθηνότερες κατηγορίες. Προσαρμόζοντας τον σε μια νέα φωτογραφική μπορεί να επανεστιάζει μηχανικά με τον προσαρμογέα έχοντας το εμπρός στοιχείο σε διαφορετική "αρχική" εστίαση.
 
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Περισσοτερες πληροφοριες για τους φακους τυπου Petzval

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The Trendiest Lens in Hollywood — And How You Can Use It​

StudioBinder


και λιγα ιστορικα απο εναν απο τους θρυλικοτερους οικους πλεον στην Ευρωπη που κανουν rehousing φακων κυριως για κινηματογραφικη χρηση

Petzval Lenses | True Lens Services repair, service and test film and video lenses. Lens engineers who are specialists in all aspects of precision engineering

www.truelens.co.uk www.truelens.co.uk

και φυσικα στο νημα του φορουμ μας

Kosh

Post in thread 'Lomography Experimental Lens Kits'

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Lomography Petzval 55mm f/1.7 Mark II 'Bokeh Control' lens review​

Christopher Frost
 
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