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

Maker	Venus Optics
Lens mount(s)	Canon EF, Nikon AI, Pentax K, Sony A, Sony E
Technical data
Type	Prime
Focus drive	manual focus
Focal length	105mm
Image format	35mm full-frame
Aperture (max/min)	f/2.0 - 22.0, T3.2 - T8
Close focus distance	0.90 metres (3.0 ft)
Max. magnification	1:7 (0.14x)
Diaphragm blades	F-stop: 8, 9 or 14 (depending on production date), T-stop: 14
Construction	11 elements in 8 groups
Features
Manual focus override	Yes
Weather-sealing	No
Lens-based stabilization	No
Aperture ring	Yes
Unique features	Smooth Trans Focus
Application	Portrait
Physical
Max. length	98.9 millimetres (3.89 in)
Diameter	76.0 millimetres (2.99 in)
Weight	745 grams (1.642 lb)
Filter diameter	67mm
History
Introduction	2016
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

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

• List of third-party E-mount lenses
• Sony FE 100mm F2.8 STF GM OSS