The world's first* F1.4 diagonal fisheye interchangeable lens for 35mm full-frame. Unparalleled resolving power that overturns the conventional wisdom about fisheye lenses
In developing a fisheye lens featuring an ultra-wide-angle and powerful fisheye distortion, SIGMA has achieved a completely new level of artistic potential, combining the world's first F1.4 aperture for consumer use with outstanding resolving power across the entire image. In terms of optical performance, the SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art has achieved excellent point image reproducibility and high resolution by correcting various aberrations, especially sagittal coma flare. The lens is capable of handling astrophotography, which demands particularly high-quality performance, even when wide-open. Unlike conventional fisheyes, the SIGMA 15mm F1.4 DG DN DIAGONAL FISHEYE | Art is exceptionally sharp across its entire 180° angle-of-view and offers an ultra-fast F1.4 aperture, making it perfect for a wide range of applications including astrophotography, landscapes and architecture. The expressive power of this all-new full-frame mirrorless lens opens a wealth of creative possibilities in wide-angle photography.
[Key specifications]
- Lens construction: 21 elements in 15 groups (4 FLD, 3 SLD, 2 aspherical elements)
- Angle of view: 180°
- Number of aperture blades: 11 (rounded diaphragm)
- Minimum aperture: F16｜ Minimum focusing distance: 38.5cm / 15.2in.
- Maximum magnification ratio: 1:16
- Dimensions (Maximum Diameter × Length): φ104.0mm × 157.9mm / φ4.1in. x 6.2in.
- Weight: 1,360g / 48.0oz.
Seriously, this is one interesting lens for astro. I've been very impressed with the image quality of some of the other Art lenses, namely the 20/1.4 and 50/1.4. If this one delivers on the optical performance, and if it becomes available for RF mount, it just may find a place in my astro kit.
Beside of that: The RF 85/1.2 is also a very good lens for astro (you pay for it), but the native selection of RF lenses is so incredible small that I still depend on 'old' Sigma Art and Samyang lenses plus one EF lense with the 'blue spectrum refractive element' for my night activities. To be honest: I don't think that will improve soon. Sony? Yes, but they have other problems ...