A sophisticated optical design pairs a trio of aspherical elements with one super ED element and one ED element to control both spherical and chromatic aberrations for improved sharpness, clarity, and color accuracy. Balancing the optical assets is an internal focusing mechanism that utilizes a linear AF motor to deliver quick, quiet, and precise focusing performance. A fluorine coating has also been added to the front element to repel moisture and the lens also features a dust-, freeze-, and weather-resistant construction for use in inclement conditions. Additionally, a manual aperture ring is featured for intuitive, tactile adjustment over exposure settings, and a Command position can also be set for camera-based control over the aperture.
The Pro 77mm 99-UVBTS Brass UV Filter is Chiaro’s top-performing protective UV filter offering 99% light transmission. It’s ideal for photographers who demand the highest-quality glass and other essential features for uncompromised image fidelity and premium construction.
To achieve superior 99% light transmission, Chiaro uses highly-polished Schott glass, multi-coating, and additional advanced elements that improve the filter’s light transmission. A scratch-resistant coating minimizes scratching of the glass and helps assure that water, oil, dust, and fingerprints are removed with a gentle wipe. The durable brass filter ring is designed to screw on and off effortlessly, and it’s thin to prevent vignetting when used with wide-angle lenses. Side knurling is crafted to help ensure that you’ll have a firm grip when attaching or removing your filter.
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.
Focal Length | 32 to 64mm |
Maximum Aperture | f/4 |
Minimum Aperture | f/32 |
Lens Mount | FUJIFILM G |
Angle of View | 46.3° to 81° |
Minimum Focus Distance | 1.64' / 50 cm |
Maximum Magnification | 0.12x |
Optical Design | 14 Elements in 11 Groups |
Diaphragm Blades | 9 |
Focus Type | Autofocus |
Image Stabilization | No |
Filter Size | 77 mm (Front) |
Dimensions (ø x L) | 3.65 x 4.57" / 92.6 x 116 mm |
Weight | 1.93 lb / 875 g |
Package Weight | 3.55 lb |
Box Dimensions (LxWxH) | 8.3 x 7.7 x 6.6" |
Filter Type | UV |
Filter Factor | 1x (0-Stop) |
Circular Size | 77 mm Filter Thread |
Rotating | No |
Front Accessory Thread / Bayonet | 77 mm |
Coatings | Multi-Coating, Resistance Coating |
Physical Features | Slim |
Filter Thickness | 0.13" / 3.2 mm |
Filter Material | Glass |
Ring Material | Brass |
Knurling | Side, Top |
Package Weight | 0.295 lb |
Box Dimensions (LxWxH) | 4.9 x 4 x 0.9" |