Laowa 105mm f/2 (t/3.2) Smooth Trans Focus Lens – ‘the Bokeh Dreamer’
Anhui China, Mar 10, 2016 – Venus Optics, the Chinese camera lenses manufacturer who had launched the world’s Widest 1:1 Macro lens last June, has just released another extraordinary lens, Laowa 105mm f/2 (t/3.2) Smooth Trans Focus Lens for DSLR cameras.
The new Laowa 105mm f/2 Smooth Trans Focus Lens incorporates an unique optical design with an apodization (APD) element next to the aperture. The APD element resembles the function of an ND filter which becomes thicker towards the perimeter, gradually reducing the amount of light transmission towards the periphery to produce a soft, natural and beautifully diffused out-of-focus rendition (or called bokeh).
The new Laowa 105mm f/2 Smooth Trans Focus Lens offers two separate diaphragms. The stepless 14-bladed perfectly circular aperture, in conjunction with the apodization element gives this lens the ability to produce smooth and pleasing bokeh. It is also useful for videographers to control the amount of light passes through the lens. The 8-bladed aperture is to determine the effective aperture opening (f-number) and the depth-of-field formed.
The lens houses with 11 elements in 8 groups with 1 piece of High Refractive elements, 3 pieces of Low Dispersion elements and 1pc of Apodisation element. This optical design is proven to deliver images with extreme sharpness and limit the chromatic abberations at its lowest. The enclosure of the lens is made of metal to strengthen its durability. Canon EF, Nikon F, Sony FE, Sony Alpha and Pentax K mounts are available.
Lens descriptions STF 105mm F2.0 (T3.2) Focal Length 105mm Maximum Aperture (Fno) F/2.0 Maximum Aperture (Tno) T/3.2 Angle of view 23°16″ Elements/ Groups 11/8 Aperture Blades F-stop: 8 T-stop: 14 Minimum Aperture F/22 Minimum Focus distance 0.9m Maximum Reproduction Ratio 0.16x Focusing Manual Focus Filter Thread Φ67 Dimensions(DxL) Φ76×98.9mm Weight 745g Mounts Canon EF / Nikon AI / Sony FE / Sony A / Pentax K Focus Manual
MTF & Optical Structure