Φακοί Sigma

  • Αγαπητοί φίλοι και φίλες,

    Σας προσκαλούμε να γιορτάσουμε μαζί τα 20α γενέθλια του AVclub.

    Το Σάββατο 10 Οκτωβρίου, από τις 18:00 θα πραγματοποιήσουμε το πάρτι των γενεθλίων του φόρουμ μας στο Peñarrubia Lounge.

    Δηλώστε τη συμμετοχή σας εδώ, θα χαρούμε πολύ να σας δούμε από κοντά.

Το θεμα ειναι αν εχει τρομερη οπτικη διαφορα με τον NIKKOR Z 180-600mm f/5.6-6.3 VR που να αξιζει να θυσιασεις εκτος απο τον ογκο και το βαρος.....(ασε το χρημα αυτο ειναι υποκειμενικο αν τα αξιζει)
 
Kosh said:
Το θεμα ειναι αν εχει τρομερη οπτικη διαφορα με τον NIKKOR Z 180-600mm f/5.6-6.3 VR που να αξιζει να θυσιασεις εκτος απο τον ογκο και το βαρος.....(ασε το χρημα αυτο ειναι υποκειμενικο αν τα αξιζει)
Click to expand...
Η διαφορά είναι σχεδόν δύο στοπ, το οποίο κάνει τη διαφορά ανάμεσα σε νιανια θόρυβο ή/και blur και καλή τεχνικά φωτογραφία σε λυκώφος και λυκαυγές.
Ή σε έντονη συννεφιά φθινόπωρο/χειμώνα και αρχές άνοιξης.
Πέρα από το f4 δίνει εξαιρετικό πορτραίτο.

Τέλος πάντων, δουλειά κάνεις και με τον 75-300 σε Μ43, το θέμα είναι το τι αποτέλεσμα παίρνεις.
 
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Canon RF 100-300mm f/2.8 Review & Sample Images by Ken Rockwell​

Ken Rockwell


ο "βαλτός" να μας καταστρεψει τα ονειρα μας ...... :p
 
fstoppers.com

Sigma 135mm f/1.4 Art Dominates Portrait Work | Fstoppers

Sigma's 135mm f/1.4 Art dominates portrait work with razor-thin depth of field and fast autofocus. Mark McGee tests real-world performance in bright sunlight, weighing optical quality against weight and cost versus Sony alternatives.
fstoppers.com fstoppers.com


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Stop Buying 85mm Portrait Lenses. The Sigma 135mm Art is BETTER!​

Mark McGee Photos




Δεν μπορω να συμφωνησω περισσοτερο.....
 
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Features - Sigma 85mm F1.2 DG | Art​



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Sigma 20-60mm F2.8-4 DG | Contemporary Full-Frame Zoom Lens - Features​

SIGMA
 
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Sigma 20-60mm f/2.8-4 DG 'C' camera lens review​


Αυτός ο φακός με βάζει σε σκέψεις.
Έχω τον Tamron 20-40f2.8 και τα 40 είναι μάλλον λίγα για καθημερινό φακό.
Ανάλογα τη τιμή, ίσως είναι ώρα να πάω σε αυτόν (ο Sony 20-70f4 είναι μάλλον ακριβός).


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An 85mm f/1.2 on E-mount? That's a First!​

Πολύ δελεαστικός φακός, αλλά προσωπικά είναι πολύ κάτω στο backlog.
Φαντάζομαι για φωτογράφους πορτραίτου/γάμων, θα είναι must.
 
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20-60mm F2.8-4 DG | Contemporary by Ulysses Aoki​



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【Behind the Scenes】20-60mm F2.8-4 DG | Contemporary by Ulysses Aoki​

SIGMA
SIGMA
 
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Sigma 85mm f/1.2 DG 'Art' camera lens review​

Christopher Frost


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This Might Be the Best Portrait Lens I’ve Ever Used​

Pav SZ
 
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20-60mm F2.8-4 DG | Contemporary by Jack Redgate​

SIGMA
SIGMA




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Behind the Scenes】20-60mm F2.8-4 DG | Contemporary by Jack Redgate​

 
Εξαιρετικο οπως παντα review απο τον thedigitalpicture για τον νεο βασιλια των 85mm




Pros
  • Excellent portrait focal length
  • Outstanding image quality
  • Ultra-wide f/1.2 aperture
  • Dual HLA AF with excellent low-light performance
  • Professional grade, weather-sealed
  • Aperture ring, customizable AFL buttons
  • Compact and lightweight design
  • Affordable price
Cons
  • Strong color fringing
  • Stars in the corner of the frame are stretched
  • Strong cat's eye bokeh at f/1.2



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Για πρωτη φορα μετα απο χρονια ειχαμε και αισθητικες αλλαγες στην συσκευασια των Sigma
 
με αυτες τις ΜΟΝΤΟΥΡΕΣ με τιποτα :p

Αν κλεισουν καμια συμφωνια για RF μπορει.

Ομως ειναι και ο 85 ολοκληρο θηριο ετσι....κοιτα τον διπλα στον αντιστοιχο canon....einai bebaia 300 γραμμαρια πιο ελαφρυς αλλα και παλι δεν τον λες πουπουλο στα 900 γραμμαρια


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Canon RF 85mm F1.2 L USM-Sigma 85mm F1.2 DG Art-Sigma 85mm f/1.4 DG DN Art-Sony FE 85mm F1.4 GM II
 
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Sigma 85mm F1.2 ART Review | My New Favorite 85mm F1.2​

Dustin Abbott







SUMMARY: The Sigma 85mm F1.2 ART lens is a high-performing premium telephoto option for Sony E-mount and L-mount users. Praised for its impressive build quality and optical performance, it features a lightweight design that undercuts competitors while delivering exceptional sharpness and autofocus speed. The lens showcases advanced engineering, particularly in minimizing focus breathing and maintaining clarity at wide apertures. Overall, it stands out as a compelling option for portrait photographers due to its pleasing bokeh and versatile handling.

Strengths:

  • Sharpness: Excellent image quality, even wide open at F1.2.
  • Lightweight & Compact: Significantly lighter than similar lenses from Canon and Nikon.
  • Autofocus Speed: Quick and accurate autofocus with minimal focus breathing.
  • Build Quality: Robust design with weather-sealing and a user-friendly aperture ring.
Weaknesses:

  • Price Point: Higher than some emerging competitors, though still less than first-party lenses.
  • Corner Sharpness: While overall sharp, corner performance isn’t quite as high as some premium alternatives, like the Sony 85mm F1.4 GM II.
  • No Case Inclusion: Lacks a padded case that was previously standard with Sigma lenses.


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Pros:​

  • Exceptional Sharpness: Delivers outstanding image quality at F1.2; sharpness holds up across the frame, making it suitable for detailed portrait work.
  • Lightweight & Compact Design: Weighs only 950g, making it lighter than competitors like the Canon RF 85mm F1.2L and Nikkor Z 85mm F1.2 S, enhancing portability for photographers on the go.
  • Fast Autofocus: Equipped with dual HLA motors for quick and accurate focusing, ensuring you don’t miss key moments, especially in fast-paced environments.
  • Minimal Focus Breathing: Effective design minimizes focus shifts during video recording, making it suitable for both stills and video work.
  • High Build Quality: Features a robust and sleek design with excellent ergonomics, complemented by weather sealing for outdoor shooting.
  • Versatile Aperture Control: The aperture ring can be set to click or smoothly glide, catering to both stills photographers and videographers.
  • Pleasant Bokeh: Produces beautiful background blur with a high blade count, enhancing the aesthetic quality of portraits.
  • Effective Flare Control: Specialized coatings minimize flare, allowing for better performance in challenging lighting situations.
  • Value for Money: Compared to first-party lenses, it offers similar or better performance at a more accessible price point.

Cons:​

  • No Included Case:
    • The lack of a padded carrying case, previously standard for Sigma lenses, could deter buyers who expect a full package.
  • Minimally Effective Minimum Focus Distance: Lower level of magnification than many competitors
  • Weight Consideration: Although lighter than competitors’ offerings, some users may still find it bulky compared to prime lenses with smaller apertures.
 
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Sigma 20-60mm F2.8-4 C Review | Your New Favorite Tiny Zoom Has Arrived​

Dustin Abbott



SUMMARY:
The Sigma 20-60mm F2.8-4 DG | Contemporary lens provides a versatile zoom range and compact design, making it an appealing choice for photographers. With a robust build and excellent image quality, it particularly excels in everyday photography and portraits while being lightweight and easy to handle. The lens features effective weather sealing and rapid autofocus, although it does have limitations regarding its maximum aperture and distortion at the wide end. Overall, it stands as a competitive option, particularly for those seeking a practical yet powerful lens for various shooting scenarios.

Strengths:

  • Versatile 20-60mm zoom range ideal for multiple photography styles.
  • Compact and lightweight design (375g) enhances portability.
  • Excellent image quality with effective weather sealing.
  • Fast and silent autofocus performance.
Weaknesses:

  • Maximum aperture diminishes quickly across the zoom range (only F2.8 at 20mm).
  • Noticeable distortion and vignetting at the wide end (20mm).
  • Lacks additional features like external switches or buttons for customization.



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Pros:​

  • Versatile Zoom Range: Covers 20-60mm, suitable for a wide variety of photography styles, from landscapes to portraits and events.
  • Compact and Lightweight: Weighs only 375g, making it easy to carry for extended periods and ideal for travel.
  • Good Image Quality: Delivers excellent sharpness and detail, especially at mid-range and longer focal lengths.
  • Effective Weather Sealing: Offers enhanced durability with multiple seal points, allowing for shooting in various weather conditions.
  • Fast Autofocus: Features Sigma’s High-Speed Linear Actuator for quick and silent focusing, suitable for both photography and video.
  • High Magnification Capability: Can achieve a maximum magnification of 0.43x at 35mm, allowing for versatile close-up work.
  • Smooth Zoom and Focus Rings: Both rings operate smoothly, facilitating easy adjustments for different shooting situations.
  • High Build Quality: Strong construction materials and design contribute to a premium feel and longevity.
  • Minimal Chromatic Aberration: Excellent control over longitudinal and lateral chromatic aberrations, enhancing image quality.
  • Bokeh Quality: Provides reasonably smooth transitions in out-of-focus areas, enhancing portrait shots.
  • Rich and Accurate Colors: Sigma’s optical design ensures vibrant color reproduction with good contrast.
  • Flare Resistance: Effective coatings minimize flare and ghosting, maintaining image contrast even in backlit situations.

Cons:​

  • Variable Maximum Aperture: The maximum aperture of F2.8 only lasts for a short section of the zoom range, limiting low-light performance (F4 at the long end).
  • Distortion at Wide End: Noticeable distortion and vignetting at 20mm, requiring correction in post-processing.
  • Limited Features: Lacks switches and buttons for advanced customization compared to other lenses, which may deter some users.
  • Less Sharp Corners: While center sharpness is good, corner performance can lag behind, especially wide open.


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petapixel.com

Sigma 20-60mm f/2.8-4 DG Contemporary Review: Versatility is a Virtue

Convenience is an incredibly important selling feature, and the new Sigma 20-60mm lens brings plenty of versatility to the table.
petapixel.com petapixel.com




Pros

  • Compact and lightweight
  • Gratefully fast f/2.8 aperture at the wide end
  • Good sharpness and detail
  • Excellent flare resistance
  • Decent closeup performance
Cons

  • Bokeh is harsh and lacks smoothness
  • Middling sunstars
  • Lacks any lens controls or switches
 
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