TTArtisan 500mm F6.3 Metal Bodied Telephoto Lens Compatible with Canon RF Mount (Full Frame) Black

Manual Focus 500m F6.3 Metal Bodied Lens with Tripd Mount Ring Two ED (extra-low dispersion) glass, good coma control and the F6.3 aperture help you capture stunning deep-sky objects in the night sky with reduced chromatic aberration 82mm Filter Size / 307g / Full Frame / 3.3M Closest distance / 5deg viewing angle Excellent Optical Design: 8 elements in 5 groups, including 2 high refraction index elements, which can effectively control spherical aberrations.