It seems like you're looking for a lens that can work well for astrophotography, gimbal work, and offers a very wide field of view. Here are some considerations and lens options that could meet your requirements: Astrophotography: For astrophotography, you generally want a lens with a wide aperture (low f-number) to capture as much light as possible from celestial objects. Additionally, a wide field of view can help capture expansive starry landscapes. Some options to consider are: Rokinon 14mm f/2.8 IF ED UMC Lens: This lens is known for its wide field of view and relatively fast aperture. It's available for various camera mounts and offers good image quality for astrophotography. Samyang / Rokinon 24mm f/1.4 ED AS IF UMC Lens: While not as wide as the 14mm option, this lens offers a wider aperture, which can be advantageous for capturing more light during astrophotography. Gimbal Work: When using a gimbal for video work, a lightweight lens with good stabilization capabilities is beneficial to help maintain balance and smooth movements. Keep in mind that ultra-wide lenses might not always be ideal for gimbal work due to potential distortion. Sony FE 16-35mm f/2.8 GM Lens: This lens offers a versatile focal length range and a relatively wide aperture. It's designed for Sony E-mount cameras and provides high-quality optics and good stabilization. Canon EF 24-70mm f/2.8L II USM Lens: For Canon users, this lens is known for its optical quality and can be a versatile choice for gimbal work due to its focal length range. Very Wide Field of View: For a very wide field of view, you might consider ultra-wide-angle lenses: Samyang / Rokinon 14mm f/2.8 IF ED UMC Lens: As mentioned earlier, this lens offers an ultra-wide field of view that can capture expansive landscapes or dramatic architectural shots. Canon EF 11-24mm f/4L USM Lens: If you're looking for an even wider field of view, this Canon lens provides exceptional ultra-wide coverage. Remember that the suitability of a lens for gimbal work also depends on the weight and size of the lens, as well as the gimbal's weight capacity and compatibility. Additionally, be mindful of potential distortion and vignetting when using ultra-wide lenses for various types of photography. Ultimately, the best lens choice will depend on your specific camera system, budget, and priorities among astrophotography, gimbal work, and wide-angle coverage. It's recommended to try out lenses if possible and read reviews to ensure they meet your needs.

Absolutely, you've highlighted some key advantages of using a lens with a wider aperture like f/2, especially for portrait photography: Low-Light Performance: A wider aperture, such as f/2, allows more light to enter the camera sensor, making it easier to capture well-exposed images in low-light conditions. This is particularly beneficial when shooting indoors, during the golden hour, or in other situations where natural light is limited. Background Compression: A wider aperture also contributes to shallower depth of field. This, in turn, helps to blur the background more significantly, making the subject stand out prominently. When you're shooting a portrait against a background like a mountain, using a wider aperture can create a pleasing separation between the subject and the background, drawing attention to the subject while minimizing distractions. Bokeh: The wider aperture not only blurs the background but also produces a smooth and creamy bokeh, adding a pleasing aesthetic quality to your portraits. This bokeh effect can enhance the overall visual appeal of the image and contribute to a more professional look. Subject Isolation: The combination of low-light performance, background compression, and bokeh helps isolate the subject from its surroundings. This can be particularly advantageous when you want to emphasize the person or object you're photographing, creating a strong focal point. Creative Control: The ability to control depth of field with a wider aperture gives you creative control over your images. You can choose to have a shallow depth of field for artistic effects or a deeper depth of field to capture more details. It's important to note that the exact effect of background compression and bokeh can also depend on the focal length of the lens. The Canon 50mm f/1.8 lens at f/2 can indeed provide a pleasing level of background compression and bokeh for portrait photography, making it a versatile and useful tool in various lighting conditions and scenarios.