What is the 2.4:1 aspect ratio equivalent for the SIRUI Saturn 75mm?

To achieve this, you must set your camera’s sensor to its native 3:2 shape before the 1.6x anamorphic squeeze—the horizontal compression of the image—is applied. You should verify your camera’s sensor dimensions to ensure it supports a 3:2 native capture before planning your crop.

How the SIRUI Saturn 75mm squeeze factor determines the final aspect ratio

The 1.6x squeeze factor on this lens determines the final field of view (FOV) and the resulting aspect ratio. Because the lens provides a 1.6x squeeze, the final image width is compressed by that multiplier. This specific calculation is vital for cinema lens buyers because the final 2.4:1 crop depends entirely on the starting horizontal FOV of the sensor. We selected the SIRUI Saturn 75mm for our comparison because it offers a unique carbon fiber construction for a compact cinema lens. If you use a 16:9 sensor mode instead, the lens produces a wider 2.8:1 aspect ratio. Do you need to know the exact degree of the horizontal FOV? The lens provides a horizontal field of view equivalent to a 22mm FF spherical lens, which helps you calculate the exact framing for your specific sensor size.

You can find the technical specifications in our SIRUI Saturn 75mm spec breakdown.

What to Check Before Buying the SIRUI Saturn 75mm

Before purchasing this anamorphic lens, verify these technical requirements to ensure the output matches your production goals:

For answers to common inquiries, see the SIRUI Saturn 75mm review FAQ.

• Confirm your camera sensor supports a 3:2 native aspect ratio to achieve the 2.4:1 output.
• Identify your required desqueeze factor, which is 1.6x for this specific model, to ensure your post-production software can accurately reconstruct the image.
• Check if your current workflow requires a 2.8:1 ratio, which this lens produces when shooting in 16:9 mode.
• Verify that your rig can accommodate the 465g weight and carbon fiber build of this compact cinema lens.

Choosing the Right Anamorphic Lens

The SIRUI Saturn 75mm is a compact cinema lens—a piece of glass that squeezes the image horizontally to create a wide, cinematic look with oval bokeh. Buyers who need a lightweight, portable option for handheld stabilizers or FPV drones will find this specific model well-suited for mobile setups. However, if your project requires a very wide aperture for low-light cinematography or shallow depth of field, you may need to look at alternatives. This lens features a T2.9 maximum aperture, which provides sufficient light for vlogging in small rooms but may not meet the demands of high-end commercial work or professional portraits requiring a wider opening like T1.4 or T1.8.

If you are planning unique overhead shots, find out if the SIRUI Saturn 75mm works on a gimbal.

If you primarily need a lightweight anamorphic lens for vlogging or gimbal-based work where a 2.4:1 crop is your goal, the SIRUI Saturn 75mm is a strong choice. For high-end commercial productions requiring extreme low-light performance, you should consider a lens with a wider maximum aperture.

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.