User Manual for Venus Optics Laowa 105mm f 2 Smooth Trans Focus Lens for Pentax K Click to enlarge the picture
Contents of the user manual for the Venus Optics Laowa 105mm f 2
- Product category: SLR Lenses Venus Optics
- Brand: Venus Optics
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Venus Optics SLR Lenses
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User manual for the Venus Optics Laowa 105mm f 2 contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Venus Optics product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Venus Optics user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Venus Optics product will considerably shorten its lifespan!
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Product description Best SLR Lenses of 2017 Read More Designed to provide a wealth of control over out-of-focus quality and to enhance bokeh, the Laowa 105mm f/2 Smooth Trans Focus Lens from Venus Optics is a short telephoto prime designed for full-frame Pentax K-mount cameras. The unique optical design incorporates an apodization (APD) element, as well as two separate diaphragms—8- and 14-blade—to provide separate adjustment over the bokeh as well as the exposure and depth of field. This APD element functions as a radially graduated neutral density filter, and as such limits the light transmission to a T-stop value of 3.2, while permitting the depth of field and selective focus qualities of a true f/2 design.
Alongside the unique attributes of the APD element, the lens also incorporates three low dispersion elements and one extra refractive index element to control chromatic aberrations and color fringing, as well as produce a great deal of overall clarity and sharpness. The lens is also characterized by its manual focus, manual aperture design, that provides a wealth of control over focus and exposure to benefit working with the APD element. - Short telephoto prime designed for full-frame Pentax K-mount cameras, this lens can also be used on APS-C models where it provides a 157.5mm equivalent focal length.
- Optical design incorporates an apodization element that helps to improve the quality of bokeh. This element, which resembles a radially graduated ND filter that tapers from clear in the center to more dense around the edges, produces more circular out-of-focus highlights for more pleasing selective focus and shallow depth of field effects.
- To control the effect of the apodization element, two separate diaphragms are incorporated in the lens' design: a 14-blade diaphragm that works mainly in conjunction with the APD element to control bokeh, as well as a standard 8-blade diaphragm at the rear of the lens design to control the overall light transmission and affect depth of field.
- Due to the incorporation of the APD element, the lens offers an effective light transmission value of T3.2, while the f/2 designation relates mainly toward the potential for selective focus and depth of field control.
- Beyond the APD element, the lens also features three low dispersion elements and one extra refractive index element, which combine to limit chromatic aberrations throughout the aperture range and contribute to a high degree of sharpness and clarity.
- A manual focus design permits fine-tuned control for focusing as closely as 3' away with a maximum magnification of 0.16x.
- Two manual aperture rings enable you to adjust both the exposure-affecting diaphragm as well as the APD-affecting aperture.
In the Box Venus Optics Laowa 105mm f/2 Smooth Trans Focus Lens for Pentax K Lens Hood Front and Rear Lens Caps Limited 3-Year Warranty Macro Lens Buying Guide Todd Vorenkamp 11/27/2018 Table of Contents
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Technical parametersVenus Optics Laowa 105mm f/2 Smooth Trans Focus Specs | Focal Length | 105mm | | Maximum Aperture | f/2 | | Minimum Aperture | f/22 | | Lens Mount | Pentax K | | Format Compatibility | Full-Frame | | Angle of View | 23
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