Description
This is a product description of the Sigma 56mm f/1.4 DC DN lens, specifically designed for Sony E-mount mirrorless cameras with APS-C sensors. Here are the key features mentioned:
1. **Portrait-length prime**: The lens is a prime lens with a focal length of 56mm, equivalent to 84mm on a full-frame camera, making it suitable for portrait photography.
2. **Bright f/1.4 maximum aperture**: The lens has a bright maximum aperture of f/1.4, allowing for improved control over depth of field and excellent low-light performance.
3. **Optical design**: The lens features two aspherical elements and one SLD (Special Low Dispersion) element, which help to reduce spherical and chromatic aberrations, resulting in greater sharpness and clarity.
4. **Super multilayer coating**: A super multilayer coating has been applied to the lens elements to minimize flare and ghosting, ensuring contrast-rich and color-accurate imagery even in backlit conditions.
5. **Stepping AF motor**: The lens features a stepping AF motor that provides fast, precise, and near-silent autofocus performance, making it suitable for both still photography and videography.
6. **Rounded nine-blade diaphragm**: The lens has a rounded nine-blade diaphragm that contributes to a smooth and pleasing bokeh quality.
7. **Brass bayonet mount**: The bayonet mount is constructed from brass for accuracy and durability, and features rubber sealing to make it dust and splash resistant.
Overall, this lens is designed to provide a balance between convenience and performance, making it suitable for portrait photography and other applications where high image quality is important.
