Venus Optics Laowa 105mm f/2 Smooth Trans Focus

The Venus Optics Laowa 105mm F2 Smooth Trans Focus lens is a smooth trans focus full-frame prime lens for Canon EF, Nikon AI, Sony A, Sony E, and Pentax K mounts, announced by Venus Optics in September 2016. It is marketed as the "Bokeh Dreamer" lens.[1]

Laowa 105mm F2 STF Bokeh Dreamer
MakerVenus Optics
Lens mount(s)Canon EF, Nikon AI, Pentax K, Sony A, Sony E
Technical data
TypePrime
Focus drivemanual focus
Focal length105mm
Image format35mm full-frame
Aperture (max/min)f/2.0 - 22.0, T3.2 - T8
Close focus distance0.90 metres (3.0 ft)
Max. magnification1:7 (0.14x)
Diaphragm bladesF-stop: 8, 9 or 14 (depending on production date), T-stop: 14
Construction11 elements in 8 groups
Features
Manual focus overrideYes Yes
Weather-sealingNo No
Lens-based stabilizationNo No
Aperture ringYes Yes
Unique featuresSmooth Trans Focus
ApplicationPortrait
Physical
Max. length98.9 millimetres (3.89 in)
Diameter76.0 millimetres (2.99 in)
Weight745 grams (1.642 lb)
Filter diameter67mm
History
Introduction2016
Retail info
MSRP$699 USD

Though designed for full frame, the lens can be used on APS-C camera bodies, with an equivalent full-frame field-of-view of approximately 136.5mm - 157.5mm. Canon EF-Mount versions are optionally equipped with a focus confirmation chip.

Optical properties

edit

The lens features an apodization filter element within the lens itself which lends itself to producing creamy smooth bokeh at the expense of light gathering capabilities. The lens features the bokeh of an f/2.0 lens but maintains the light-gathering of a T/3.2 lens, requiring brighter lighting conditions from the environment to compensate.

See also

edit

References

edit
  1. ^ "www.venuslens.net/product/laowa-105mm-f2/". venuslens.net. Retrieved 2017-06-17.