Sigma 40mm f/1.4 DG HSM Art Lens for Sony E-Mount
Cine Lens Tolerances and Design
- Designed within the rigorous tolerances of a cine lens.
- Wide normal-length lens characterized by a bright design and sophisticated optical layout.
- Ideal for creative and artistic applications as part of the Art line within Sigma’s Global Vision series.
Aperture and Depth of Field
- Fast f/1.4 maximum aperture.
- Achieves shallow depth of field and selective focus effects.
- Suited for working in difficult lighting conditions.
Advanced Optical Design
- Series of low dispersion and aspherical elements to control aberrations:
- Three F Low Dispersion (FLD) and three Special Low Dispersion (SLD) elements reduce color fringing and chromatic aberrations for improved clarity and color accuracy.
- One aspherical element limits distortion and spherical aberrations, contributing to greater overall sharpness and accurate rendering.
- Super Multi-Layer Coating minimizes flare and ghosting for greater contrast and color accuracy, even in strong lighting conditions.
Focusing Performance
- Hyper Sonic Motor (HSM) for quick, smooth, and quiet autofocus.
- Full-time manual focus override by rotating the focus ring at any time.
- Optimized AF algorithm produces smoother focusing performance.
Physical Design
- Brass bayonet mount offers rigidity and mounting precision.
- Seal against dust and moisture for added protection.
- Specialized electromagnetic aperture mechanism provides greater exposure control stability, beneficial for fast continuous shooting rates.
- Protective coating on the front element is water and oil-repellent to aid in cleaning.
- Rounded nine-blade diaphragm contributes to a smooth and pleasing bokeh quality.
Compatibility and Application
- Short-normal prime lens for full-frame Sony E-mount mirrorless cameras.
- Suitable for APS-C models, providing a 60mm equivalent focal length.
- Designed for truly notable optical performance.
Key Features
- Bright f/1.4 maximum aperture for low-light conditions and shallow depth of field techniques.
- Enhanced optical design with three FLD, three SLD, and one aspherical element.
- Super Multi-Layer Coating for contrast-rich and color-neutral imagery.
- Hyper Sonic Motor (HSM) for efficient autofocus with manual override.
- Brass bayonet mount with dust and splash resistance.
- Electromagnetic aperture mechanism for stable exposure control.
- Water and oil-repellent coating on the front element for easy cleaning.
