Exploring Canon's cinema lens range

Although the Cinema EOS system made its public debut in 2011, Canon's history of cinema lens design can be traced back decades. It began in 1969, when Canon accepted a request to build a cinema zoom for Hollywood filmmakers, and two years later the K5x25 macro zoom lens was born. This was soon followed by the iconic K35 Prime Series, which were recognised with an Academy Award in 1976 and are still appreciated in the industry today.

The latest Canon cine lenses are the culmination of half a century of experience in the construction of cinema lenses. With their combination of outstanding optical performance, class-leading build quality and trusted reliability, Canon's Cine Primes and Flex Zooms are equally at home capturing natural history in HDR as they are on high-end drama sets.

"Canon has been at the forefront of optical technology since the 1940s, pushing the boundaries, reimagining the possibilities and revolutionising the ways in which photographers and filmmakers shoot," says Ram Sarup, Canon Europe Product Marketing Specialist.

"Over the years, we have introduced a string of innovations and set new standards in image quality, handling and performance. With the introduction of the Flex Zoom series and the wide-angle CN8x15 IAS S E1/P1 Cine Servo lens, for example, we once again pushed those boundaries, reinforcing our commitment to filmmakers to provide the very best tools for their productions.

"We launched the Canon EOS C70 in 2020 and the EOS R5 C in 2022, both of which use Canon's pioneering RF mount. Although it's possible to use EF lenses on these Cinema EOS cameras via one of our EF to EOS R mount adapters, the introduction of the Canon CN-R Primes provides EOS C70 and EOS R5 C users with a complete set of native RF mount cinema lenses that benefit from the advanced capabilities of the RF mount."

Consistency is one of the key advantages of the Canon cine lens system. Whichever lens you're using, you can be confident the colour balance will remain the same. "If you decide to swap the CN-E14mm T3.1 L F Cine Prime for the CN-E30-300mm T2.95-3.7 L S Cine Zoom or the CN-E45-135mm T2.4 L F / FP Flex Zoom, for example, you won't see any noticeable colour shift because all our cine lenses are designed to work together," says Paul Atkinson, Canon Europe Product Specialist.

"There are other shared features, too. The gearing is the same on the lenses, and the front diameters and filter threads on the Cine Primes, Sumire Primes and Flex Zooms are also identical, making it easy to change lenses with minimal adjustments to your rig setup.

"Ultimately it just comes down to finding the lens that's suitable for the look you want, your shooting environment and your budget. The opportunity to choose anything from 14mm right through to 1500mm and know that you're going to get a consistent level of performance gives you incredible flexibility," adds Paul.

To help you make an informed decision as to which Canon cine lens is right for you, here's a guide to the different types of cinema zooms and prime lenses that are currently available.

• Flex Zooms
• CN-E Primes
• CN-R Primes
• Sumire Primes
• Cine Servos
• Compact Cine Servos

Canon's first series of premium full-frame and Super 35mm cinema zoom lenses is ideally suited to a wide range of high-end productions, including cinema. The Flex Zoom range launched with two lenses – the Canon CN-E20-50mm T2.4 L F / FP and the CN-E45-135mm T2.4 L F / FP, which between them cover the popular 20-135mm focal range. Canon's other full-frame cinema lens ranges, Sumire and Cine Prime, are prime lenses and users would need almost seven of those to cover the focal range of these two Flex Zooms.

Producing a sharp and clean look just like Canon's Cine Primes, the high performance of the Flex Zooms is future-proofed for 8K productions, and well suited to today's 4K productions where it's common practice to enjoy the additional detail and flexibility that shooting in higher resolution brings. "With regards to the look of the lenses, there is the unified Canon colour, so even if you are mixing and matching with our other cine lenses, you have the same natural colours and beautiful skin tones," Jack adds.

The shallow depth of field afforded by the large maximum apertures of the full-frame and Super 35mm Flex Zooms contribute to their cinematic look. "The constant T-stop values are unheard of for cine lenses at these focal lengths,” says Jack. “With the full-frame Flex Zooms you have a constant light transmission of T2.4 and with the Super 35mm models, you get T1.7 throughout the zoom range, making them the fastest lenses for their focal lengths."

Living up to the Flex Zoom name, this series is the most versatile and adaptable of Canon’s cine lenses. Users not only have the option of changing the mount from EF to PL and back again at Canon authorised service centres or authorised third-party companies, but the lenses can also be converted from Super 35mm to full-frame and vice versa.

Using the relay kit, a Canon authorised service centre is able to convert the CN-E14-35MM T1.7 L S / SP and CN-E31.5-95MM T1.7 L S / SP to give a full-frame image circle, or change the Canon CN-E20-50mm T2.4 L F / FP and CN-E45-135mm T2.4 L F / FP to Super 35mm. The conversion can also be reversed. Having the option to alter both the mount and the relay on the premium Flex Zooms brings an even greater level of flexibility and value to high-end film productions.

Significantly lighter in weight than zoom lenses covering the same focal length, Canon's CN-E Primes feature a durable design and industry-standard controls, and are designed for cameras with a full-frame sensor. A natural fit for high-end productions, the full set of seven full-frame lenses covers a focal length range of 14mm up to 135mm, giving plenty of creative options to professionals who prefer the aesthetic qualities of cine primes. Each lens has been designed with consistent colour reproduction in mind, so there is no noticeable colour shift when swapping between focal lengths.

"These are very sharp, high-contrast lenses with exceptional bokeh," Paul says. "They have the advantage of having a wider T-stop of T1.5 in most cases – even T1.3 with the CN-E50mm T1.3 L F and CN-E85mm T1.3 L F. They also exhibit minimum focus breathing. Sometimes with photography lenses there's a discernible change in the field of view when you change the focus, but that's been significantly reduced across the entire Canon CN-E Prime range.

"Because these lenses are designed for EF mount cameras, it means we have compatibility with the Dual Pixel Focus Guide for accurate manual focus assist, plus the ability to transfer lens metadata back into the file. It means that for a camera with Electronic Image Stabilization, such as the Canon EOS C500 Mark II, the camera will automatically detect the focal length and set up the stabilisation correctly when the function is activated."

Combining the quality of Canon's CN-E Primes with the advanced capabilities of the RF mount, CN-R Primes bring a new level of performance to high-end productions. The seven RF mount lenses complement the EOS C70 and EOS R5 C cameras, and span 14mm to 135mm – the same focal length range as the CN-E Primes and Sumire Primes.

The design of the CN-R Primes is also consistent with the other cinema prime lenses, enabling them to be used seamlessly alongside each other in a multi-camera setup. "If you disregard the mounts, all three sets of prime lenses appear identical," Ram says. "Each lens has the same front diameter, filter thread and focus throw, although the RF Cine Primes are longer, with fixed knurling at the back of the lens that makes them easier to hold and operate."

In terms of image characteristics, the CN-R Primes most closely match the CN-E Primes. "They're designed to have a cleaner, more accurate reproduction of what you're shooting compared to the softer character of the Sumire Primes," Ram says, "and they share the same bright T-stop values, 11-blade iris and reduced focus breathing as their EF and Sumire stablemates."

The evolution from EF to RF mount brings enhanced functionality for professional video production. "Compared to the EF mount, the RF mount allows lens information to be passed to the camera at a much faster speed," explains Ram, "so we're able to support distortion correction in the EOS C70 and EOS R5 C when these cameras are teamed with the CN-R Primes – something which isn't possible with the CN-E or Sumire Primes."

The convenience of being able to shoot with native cinema lenses on the EOS C70 and EOS R5 C is not to be underestimated either, suggests Ram. "Over time, you can end up with a less stable connection between a mount adaptor, a lens and a camera, particularly if you're using heavier cinema lenses. Having that native RF mount means that you don't need to use an adaptor, so you get a more robust connection between the camera and the lens."

Engineered to deliver sublime image quality with a noticeably different character to Canon's Cine Primes, the Sumire (pronounced "Soo-mee-ray") collection of full-frame prime lenses lends a more cinematic look to productions.

The Sumire Prime range, including the CN-E20mm T1.5 FP X, CN-E50mm T1.3 FP X and CN-E85mm T1.3 FP X, offers the same seven focal lengths and fast T-stops as the Cine Prime lineup. Both sets of prime lenses also share an identical colour tone, mechanics and construction, with a consistent 300-degree focus travel, 105mm screw-on filter thread and 114mm front diameter for matte boxes.

Where the Sumire Primes differ is that their optical formula produces a more cinematic look with a hint of softness, natural skin tones, subtle flares and rich, silky bokeh. These characteristics are particularly evident at wider apertures, with a smoother focus fall-off. They come with a PL mount that can be converted to EF at any local authorised service facility.

"Although both the Sumire and Cine Prime lenses have 11-blade diaphragms, the bokeh is slightly different with the Sumire lenses, especially towards the edges, where it becomes more elliptical," Paul says. "The Cine Primes have a more universal rendering in this respect."

With stunning 4K optical quality, Canon’s Cine Servo lenses suit live broadcast, news gathering and documentary filmmaking applications where servo control is required (servo being the motorised zoom and focus capabilities).

The lenses are designed for Super 35mm sensors, offering an extensive line-up from wide to ultra-telephoto options. These include the Canon CN7X17 KAS T, CN8x15 IAS S E1/P1, CN10x25 IAS S E1/P1 and the unrivalled CN20x50 IAS H E1/P1. In addition, both the CN8 and CN10 offer full-frame coverage when using the built-in 1.5x extender.

All lenses are available in both EF and PL mount, while the CN7X17 KAS T is our first cine servo lens equipped with an RF mount. This allows for seamless pairing with our EOS R System cameras, including the Canon EOS C400.

“The introduction of the RF mount will provide extended compatibility with Virtual Production and VFX workflows, as well as better engage with remote operation,” says Ram Sarup, the European Product Marketing Specialist for Cinema EOS & Pro Video.

Thanks to the high-speed data capabilities of the RF mount, detailed real-time lens metadata and distortion correction can be transferred from the lens to the camera body, allowing seamless workflow integration with both the Unreal Engine and post-production VFX.

The CN7X17 KAS T also introduces Canon's next-generation e-Xs drive unit that provides precise optical focus breathing correction, faster servo control and a USB-C terminal for remote control and optimised user settings. The PL mount variant of the CN7X17 KAS T also incorporates both Cooke/I and ZEISS eXtended Data, providing industry-standard lens metadata, distortion and shading correction for a variety of workflows.

Ultimately, the Canon CN7X17 KAS T is ideal for creators who want a future-proof, versatile cine servo lens with all the benefit from the RF Mount system.

With its wide-angle focal length, the CN8x15 IAS S E1/P1 brings additional flexibility to an enormous range of live and pre-recorded TV productions. The lens meets the needs of broadcasters working in large format, as it provides a native focal length range of 15mm-120mm on Super 35mm sensors. The built-in 1.5x extender increases that reach to 22.5mm-180mm for full-frame coverage.

The CN8x15 IAS S E1/P1 delivers excellent image quality for both 4K and 8K capture and is equipped with an 11-bladed iris for smooth bokeh. "It's a versatile zoom lens for productions looking to create content with a more cinematic look," says Ram.

"Another advantage is the advanced metadata communication it offers," he adds. "The CN8x15 IAS S E1/P1 is our first Cine Servo lens to feature ZEISS eXtended Data protocol on top of the Cooke /i Technology already included in the Cine Servo range. This, along with the built-in 16-bit encoder for positional information, makes it a fantastic choice for XR and virtual productions."

Similar to their larger Cine Servo stablemates, the leaner, lighter Compact Cine Servo zoom lenses are designed for 4K Super 35mm cameras and feature built-in servo control. However, their more compact construction means that they're easy to use handheld or shoulder-mounted on shoots that move at a fast pace.

"These are workhorse lenses for filmmakers who shoot documentaries on a compact cinema camera such as the Canon EOS C200," Paul explains. "Both the CN-E18-80mm T4.4 L IS KAS S and the CN-E70-200mm T4.4 L IS offer the convenience of cine-servo operation in a conveniently small-sized package. They're ideal for the run-and-gun shooter who wants a quality optic without the hassle of having to rig up a bigger lens. For added convenience, you can even program the joystick on theCanon EOS C200's grip to become the zoom controller.

"The maximum aperture of T4.4 is slightly slower than that of other zooms in the Canon cine lens range, but with the performance of today's sensors it's not an issue. The added convenience of precise autofocus, image stabilisation and cinematic optical quality make these lenses highly appealing."

Both affordable Compact Cine Servo lenses are stabilised and offered exclusively in EF mount, so they benefit from three modes of image stabilisation and Canon's accurate and reliable Dual Pixel CMOS AF.

Canon's cinema lenses deliver outstanding results across a broad spectrum of productions, from documentaries and dramas to music promos and commercials. The consistent colour rendition, ergonomics and performance of the servo, prime and zoom cine lens ranges give filmmakers a wealth of creative options for cinematic 4K, 8K and HDR applications. So when it comes to choosing a lens for your next project, you can be sure there's a Canon cine lens to help realise your artistic vision.