7Artisans AF 50mm F/1.8

Standard prime lens • Digital era

  • Announced:
  • · March 2024
  • Production status:
  •  In production
  • Country of design:
  • · PRC (People's Republic of China)
  • Original name:
  • · 7Artisans AF50mm f/1.8
  • Class:
  • · Fast full-frame standard prime lens

Specification

Optical design:
35mm full frame
50mm
F/1.8
11 elements in 9 groups
2 ASPH, 1 ED, 2 HRI
Leica L
Nikon Z
Sony E
46.8° (35mm full frame)
On Leica T/TL/CL APS-C [1.53x] cameras:
35mm equivalent focal length:
76.5mm (in terms of field of view)
35mm equivalent speed:
F/2.8 (in terms of depth of field)
Diagonal angle of view:
31.6°
On Nikon Z APS-C [1.53x] cameras:
35mm equivalent focal length:
76.5mm (in terms of field of view)
35mm equivalent speed:
F/2.8 (in terms of depth of field)
Diagonal angle of view:
31.6°
On Sony NEX/a/ZV APS-C [1.53x] cameras:
35mm equivalent focal length:
76.5mm (in terms of field of view)
35mm equivalent speed:
F/2.8 (in terms of depth of field)
Diagonal angle of view:
31.6°
Diaphragm mechanism:
Diaphragm type:
Automatic
Aperture control:
Aperture ring (Manual settings + Auto Exposure setting)
11 (eleven)
Focusing:
0.50m
<No data>
Focusing modes:
Autofocus (AF), Manual focus (MF)
Autofocus motor:
Stepping motor
Manual focus control:
Focusing ring
Focus mode selector:
AF - MF
Manual focus override in autofocus mode:
Determined by the camera
Optical Image Stabilizer (OIS):
-
Physical characteristics:
450g (Nikon Z)
424g (Sony E)
⌀72×100mm (Nikon Z)
⌀72×98mm (Sony E)
-
-
Accessories:
Screw-type 62mm
Bayonet-type petal-shaped
Not available

Source of data

  • Manufacturer's technical data.

From the editor

7Artisans's first autofocus lens. Although lenses in the 50mm F/1.8 class are models intended for photo enthusiasts rather than professionals, this lens has a pretty complex optical formula, consisting of 11 elements in 9 groups and including a lot of special elements. This could not but affect the weight (424-450g) and length (98-100mm) of the lens. Although the lens does not have a record-breaking speed, it is enough to shoot in low light conditions, as well as isolate the subject, smoothly blurring the background. When stopping down, 11 aperture blades will keep the out-of-focus highlight's a more rounded shape. The lens has an aperture ring with Auto-Exposure setting and a focus mode switch, which is also unusual for an amateur lens. The only thing missing for complete happiness is weather sealing and fluorine coating. Overall, this is a very interesting alternative to models from camera manufacturers, and definitely not a lumpy first attempt.

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