Sirui Venus Kit - E-Mount

A 1.6x anamorphic lens captures a wider field of view horizontally than a standard spherical lens of the same focal length, allowing for a more cinematic aspect ratio (like 2.4:1) from standard sensor formats and producing characteristic oval bokeh and blue flares.

Yes, by attaching the included 1.25x Anamorphic Adapter to the front of the lenses, you can increase the effective squeeze factor to 2x, resulting in more pronounced anamorphic characteristics.

This specific set is designed for cameras with a Sony E-mount and full-frame sensors. Other mount versions are available for different camera systems.

The blue streak flares are achieved by having a strong light source (like the sun or a lighting fixture) directly hitting the front element of the lens at an angle. Clean lens elements will produce sharper flares.

With a maximum aperture of T2.9, these lenses perform reasonably well in low light conditions, especially when combined with the wide aperture capabilities of full-frame sensors.

Waterfall bokeh refers to the elongated, stretched oval shape of out-of-focus highlights characteristic of anamorphic lenses. Typical bokeh from spherical lenses is usually circular. The effect is more pronounced with higher squeeze factors.

The lenses are designed to be lightweight. The lightest lens in the lineup weighs approximately 930g (2 lbs), making the set suitable for handheld and gimbal use.

Ensure the lens is properly focused. Check that the aperture and focus rings are set correctly and that the lens is firmly attached to the camera. Clean the lens elements.

Adjust the angle of your light source relative to the lens. Brighter, more direct light sources will produce stronger flares. Ensure the lens elements are clean.

Gently operate the rings. If stiffness persists, avoid forcing them. Ensure no debris is obstructing the gears. Contact customer support if the issue continues.

Verify that you are using the correct step-up or step-down ring for your lens's filter thread size. Ensure the adapter is correctly aligned with the lens.