Sigma 30mm f/1.4 DC DN Contemporary Lens (Sony E)

This appears to be a product description for a lens:

**Key Features:**

1. **Sensor Type:** APS-C
2. **Aperture Range:** f/1.4 to f/16
3. **Effective Focal Length:** 45mm (Full-Frame Equivalent)
4. **Diaphragm:** Rounded 9-blade diaphragm for smooth bokeh and pleasing out-of-focus areas
5. **Autofocus System:** Stepping Motor AF system for fast and quiet autofocus
6. **Coating:** Super Multi-Layer Coating to reduce ghosting and flare
7. **Optical Elements:** Two Aspherical Elements to minimize distortion and aberrations
8. **High-Refractive Index Element:** One High-Refractive Index Element to reduce chromatic aberrations
9. **Sealing:** Rubber Sealing to protect against dust and moisture

This lens appears to be a high-quality, fast-aperture lens designed for APS-C sensor cameras. The rounded 9-blade diaphragm and high-refractive index element suggest that it is capable of producing smooth bokeh and high image quality. The stepping motor autofocus system and super multi-layer coating also indicate that it is designed for fast and accurate autofocus and reduced ghosting and flare.


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This is a product description for the Sigma 30mm f/1.4 DC DN Contemporary Lens for Sony E-mount mirrorless cameras:

**Key Features:**

1. **Focal Length:** 30mm (45mm equivalent on full-frame sensor)
2. **Aperture Range:** f/1.4 to f/16
3. **Optical Design:** Features two aspherical elements and one high-refractive index element to reduce distortion, spherical aberrations, and chromatic aberrations
4. **Coating:** Super Multi-Layer Coating to minimize lens flare and ghosting
5. **Autofocus:** Stepping AF motor for fast, precise, and near-silent autofocus performance
6. **Diaphragm:** Rounded nine-blade diaphragm for smooth bokeh
7. **Construction:** Constructed using Thermally Stable Composite (TSC) material for improved precision and durability
8. **Mount:** Brass bayonet mount for improved mounting accuracy and rigidity
9. **Sealing:** Rubber sealing at the lens mount helps protect against dust and moisture
10. **Compatibility:** Designed for APS-C-format Sony E-mount mirrorless cameras

This lens is a high-quality prime lens that offers a fast f/1.4 aperture, making it suitable for low-light photography and selective focus techniques. The optical design and coatings help to minimize distortions, aberrations, and lens flare, resulting in sharp and contrast-rich images. The stepping AF motor ensures fast and quiet autofocus performance, making it suitable for both stills shooting and video recording. The compact and lightweight design makes it easy to carry around, making it an excellent choice for street, portrait, or everyday photography.