Φακοί 7Artisan

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7Artisans AF 18mm F2 | An APS C Pancake for $169!​

Dustin Abbott



SUMMARY: The 7Artisans AF 18mm F2 is a compact and affordable APS-C pancake lens, offering a focal length equivalent to 27mm with a lightweight design that makes it ideal for diverse photography, especially street and hiking. While it features a decent build, including an aperture ring and STM autofocus, there are notable drawbacks, such as limited weather sealing and occasional softness in corner sharpness. Priced at just $169 USD, it presents good value but falls short of the optical quality found in higher-end lenses. Overall, it’s a practical choice for casual photographers seeking a lightweight addition to their gear.
Strengths:
  • Compact and lightweight design (27mm size, 109g weight).
  • Affordable price point ($169 USD).
  • Decent autofocus performance for both stills and video.
  • Versatile focal length, suitable for various photography styles.
Weaknesses:
  • Limited weather sealing and design issues with the USB-C port.
  • Corner sharpness can be soft and prone to chromatic aberrations.
  • Average optical performance compared to more expensive lenses.
  • Bokeh quality can be inconsistent, with some images appearing jittery.







Pros:​



  • Compact Size and Weight: At 27mm and 109g, it’s an exceptionally portable lens, ideal for travel and street photography.
  • Affordability: Priced at $169 USD, it offers excellent value for budget-conscious photographers.
  • Aperture Ring: The clicked aperture ring with detents at one-third stops allows for intuitive adjustments.
  • Good Autofocus Performance: Features an STM motor providing fast and quiet autofocus for both stills and video, enhancing shooting experience.
  • Versatile Focal Length: Equivalent to 27mm, it balances wide-angle capabilities without excessive distortion, making it suitable for various genres.
  • Lightweight Walkaround Lens: Ideal for casual shooting, it’s particularly appealing to hikers and travelers.
  • Minimum Focus Distance: With a minimum focus distance of 20cm, it provides decent magnification for close-up shots.

Cons:​



  • Soft Corner Sharpness: Image quality shows significant softness at the corners, especially evident in wide shots.
  • Chromatic Aberrations: Noticeable longitudinal and lateral chromatic aberrations can detract from image quality, particularly in high-contrast areas.
  • Complicated Filtering: The lens hood design complicates the use of filters, as it doesn’t leave enough space for simultaneous use.
  • Bokeh Quality: Bokeh can appear jittery and unrefined, with some images exhibiting a “soap bubble” effect around highlights.
  • Ghosting and Flare: Prone to ghosting and flare, particularly in backlit situations, which may reduce contrast.
  • Optical Performance: Overall optical performance is modest, especially at wider apertures, with sharpness and contrast being below average.
  • Design Issues: The USB-C port is poorly placed and lacks effective sealing, increasing the risk of losing the rubber gasket.
 
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Reactions: cacau
cacau said:
Δε θα με χάλαγε αν τον βγαλουν και σε μοντούρα m4/3, ως 36mm/f2 pancake...
Click to expand...
Για ποιο λόγο ? ένας μτχ. Lumix 20/1.7 είναι απείρως καλύτερος φακός στα ίδια λ7 και δεν παθαίνει τίποτε.
 
Έγραψα και σε άλλο θέμα (τώρα είδα ότι ήταν στην κατηγορία βίντεο)

Ψάχνοντας έπεσα πάνω στους:

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Νομίζω θα με καλύψουν.
Τί λέτε?
 
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Reactions: LongTom
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fstoppers.com

7Artisans 40mm f/2.5: Best Budget Prime? | Fstoppers

The 7Artisans 40mm f/2.5 delivers impressive optical performance and practical features at $159. AF/MF switch, metal mount, and aperture ring make it ideal for street and travel work on Nikon Z bodies.
fstoppers.com fstoppers.com


  • Focal Length: 40mm
  • Maximum Aperture: f/2.5
  • Minimum Aperture: f/16
  • Lens Mount: Nikon Z / Sony E / L-Mount
  • Format Coverage: Full Frame
  • Minimum Focus Distance: 15.7 inches / 0.4 m
  • Optical Design: 7 elements in 6 groups
  • Aperture Blades: 9
  • Focus: Autofocus with AF/MF switch
  • Filter Size: 46 mm
 
μολις τον παρηγγειλα απο mpb στα 100 ευρω ... για να τον δω σε σχεση με τον viltrox f2.5 και τον nikon 40mm f2 που ειχα .

Δεν ειναι κατι αξιολογο , αλλα εχει "χαρακτηρα"... αυτο ψαχνω σε τετοιους φακους και οχι αποδοση στα ακρα κλπ.
Εχει τρελλη βινιετα απ οτι λενε και οχι ιδιαιτερα καλη εστιαση, θα τον ξεψαχνισω οταν ερθει.
 
Τον σκέφτομαι και εγώ για την S1R σε L mount αλλά διάβασα για τρελό flare εκτός από βινιέτα και έχω κάνει pause

Περιμένω από τον Σπύρο (@CorfuS) που τον πήρε να μας γράψει περισσότερα
 
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Reactions: Γιαννης Σπυρου
To flare αλλα και η βινιετα οταν ξερει καποιος πως να τα εκμεταλευθει μπορουν να ειναι ακρως δημιουργικα.

Τετοιους φακους δεν τους παιρνεις για την τεχνικη τους αρτιοτητα (γιατι ως γνωστο η αρτιοτητα κοστιζει ) αλλα για τον χαρακτηρα τους με βασει τι αποδιδουν και πως το κανουν.
 
Εξαρτάται τι flare δίνει, σε άλλο φακό μπορεί να προσθέτει χαρακτήρα και σε άλλο να καταστρέφει τη φωτό τελείως , δεν είναι όλα τα flare ίδια. Στο review που έχω βάλει στο L mount για τον φακό έχει δείγματα και δεν είναι καθόλου δημιουργικό.
 
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