- Four aspherical elements are featured in the optical design, including two Advanced Aspherical elements, and noticeably reduce spherical aberrations and distortion throughout the zoom range for improved sharpness and clarity.
- Three extra-low dispersion elements are also used to minimize color fringing and chromatic aberrations for greater color accuracy.
- A Nano AR Coating has been applied to reduce surface reflections, flare, and ghosting for increased contrast and color rendering in strong lighting conditions.
- Constant f/4 maximum aperture offers consistent performance throughout the zoom range and also lends greater control over focus position for shallow depth of field techniques.
- Rounded nine-blade diaphragm contributes to a pleasing bokeh quality when employing selective focus techniques.
- Portable design weighs around 1.5 lb, making this a versatile choice for everyday shooting.
- Optical SteadyShot image stabilization helps to minimize the appearance of camera shake for sharper imagery when shooting handheld with slower shutter speeds.
- This stabilization system can also be combined with select camera's sensor-shift type image stabilization for more effective control of camera blur.
- Dust- and moisture-sealed design better permits working in inclement conditions and rubberized control rings benefit handling in colder temperatures.
- The front lens element features a fluorine coating to protect against smudges and dust from adhering to the glass surface.
- Direct Drive Super Sonic wave AF motor and internal focus mechanism provide quick, quiet, and precise autofocus performance and also contribute to more natural, intuitive manual focus control.
- Minimum focusing distance of 1.25' results in a maximum magnification of 0.31x, making this lens a suitable choice for close-up subjects.
- A focus hold button and AF/MF switch are present on the lens barrel for intuitive tactile control and rapid access to select settings.
The Pro 77mm 98-UVAT UV Filter is one of Chiaro’s highest-rated protective UV filters with 98% light transmission. It’s ideal for photographers who demand high-quality glass and other essential features for excellent image fidelity and construction.
To achieve 98% light transmission, Chiaro uses highly-polished optical glass, multi-coating, and additional advanced elements that improve the filter’s light transmission. Resistance coating improves the scratch resistance of the glass, and helps assure that water, oil, dust, and fingerprints are removed with a gentle wipe. A hard-anodized aluminum filter ring is designed to screw on and off effortlessly, and it’s thin to prevent vignetting when used with wide-angle lenses.
Image quality is what matters most at Chiaro. The company has tested and combined many features and essentials to achieve superior image quality and the highest light transmission. To help take the confusion out of selecting a filter, Chiaro prominently displays the light transmission levels so that you can choose the perfect filter for your lens and photo session.