What is the horizontal angle of view for the SIRUI FFEK6-E Full-Frame Anamorphic Lens Cinema Lens?

To ensure this result holds, you must use a full-frame sensor and apply a 1.6x desqueeze in your post-production software to restore the horizontal proportions of the squeezed image.

The SIRUI FFEK6-E 50mm lens provides a 1.6x anamorphic squeeze

This result is based on the 50mm focal length and the 1.6x anamorphic squeeze, which is a method of squeezing a wide field of view horizontally onto a narrower sensor area. Because the squeeze factor affects the aspect ratio, the horizontal field of view is significantly wider than the 50mm focal length suggests. For cinema lens buyers, calculating the exact horizontal angle is vital because anamorphic glass produces a different framing than standard lenses, and you must know your coverage before arriving on set. We selected the SIRUI FFEK6-E for our full review because it offers a 1.6x squeeze on a Sony E Mount, which is a common mount for compact cinema setups. The lens provides a 2.4:1 aspect ratio on a 3:2 sensor and a 2.8:1 aspect ratio on a 16:9 sensor.

For a quick verdict on the SIRUI FFEK6-E, view our SIRUI FFEK6-E final verdict.

What to Check Before Buying the SIRUI FFEK6-E

Before purchasing this anamorphic lens, verify your specific equipment and requirements:

• Verify that your camera uses a native Sony E Mount to ensure the lens focuses correctly without a specialized adapter.
• Check your post-production software to ensure it supports a 1.6x horizontal desqueeze to correct the anamorphic squeeze.
• Determine if your project requires a wide-angle vlog in a small room; this lens is suitable for that task as it provides a T2.9 aperture.

Choosing the Right Anamorphic Lens

The SIRUI FFEK6-E is a 50mm anamorphic lens, which is a type of cinema glass that creates a wide, cinematic look with oval bokeh and horizontal reflections. This product is suited for shooters who need a standard focal length with a 1.6x squeeze for a cinematic feel on a compact camera. If you require a much wider field of view for architectural photography or need a wider T-stop for high-end commercial work, you should look for a lens with a wider maximum aperture or a shorter focal length.

You can find answers to common questions in our SIRUI FFEK6-E review FAQ.

If you need a 31mm equivalent horizontal field of view for a full-frame setup, the SIRUI FFEK6-E is the right choice for your kit. If your project requires a very wide-angle perspective for a large building, check if your current space allows for a wider lens, as this 50mm focal length may be too narrow for extreme wide shots.

Reviewed by the Review Expo editorial team. Review Expo writes these guides from the 135 most-reviewed cinema lens listings in our retail dataset, not from manufacturer copy.