# Cooke S4 FF/i: specs, price and what changed from the S4/i

> Cooke's S4 FF/i brings the S4 look to full frame: six T2 primes from 18 to 100mm at $15,000 each. Official specs, price and what changed from the S4/i.

- URL: https://www.4filmmakers.co/news/cooke-s4-ff-i/
- Publisher: 4FILMMAKERS (https://www.4filmmakers.co/)
- Topic: Lenses (https://www.4filmmakers.co/topics/lenses/)
- Published: 2026-10-27
- Updated: 2026-10-27
- Keywords: Cooke S4 FF/i, Cooke S4 FF/i price, Cooke S4 FF/i specs, Cooke full frame primes, Cooke S4/i vs S4 FF/i, Cooke S4 full frame, cinema prime lenses 2026

Cooke has announced the **S4 FF/i**, a set of six full-frame cinema primes at 18, 25, 35, 50, 75 and 100mm, all T2.0, in PL or LPL mount. Cooke unveiled them on 20 October 2026, builds them by hand in Leicester, and dealers list them at **$15,000 / €13,000 / £11,000 per lens**. They replace the S4/i Super 35 primes, which went out of production at the start of 2025.

Cooke calls it an evolution of the S4/i, and most of the launch coverage repeats that line. We went through both official spec sheets side by side. A few of the launch claims hold up. The weight one depends on how you count.

## In short

- Six T2.0 primes, 18 to 100mm, covering full frame (Cooke names the Venice, Alexa LF and V-Raptor as targets).
- Every lens has the same 87mm front and, apart from the 18mm, takes M82 screw-in filters.
- Weights run from 1.45 kg (50mm) to 1.8 kg (18mm), with a PL mount.
- Nine curved iris blades instead of the S4/i’s eight straight ones, plus Cooke’s latest /i metadata with per-lens shading and distortion maps.
- Reported price is $15,000 per lens, so about $90,000 for the set. Cooke hasn’t published a shipping date.

## Is it just the S4/i in a bigger barrel?

No. The old S4/i covered a 30mm image circle, which is Super 35. You can’t stretch that to a 43.3mm full-frame diagonal with new housings, so this is a new optical design. Cooke says it keeps the S4/i’s handling of skin and its soft contrast falloff, and its launch text leans on “warmth” and flares that take on the colour of the light source. We haven’t shot with it, so we can’t tell you whether it looks like an S4. Rental house tests over the next few weeks will answer that better than any press release.

What we can check is the hardware, and two changes stand out. The iris now has nine curved blades, so out-of-focus highlights stay round when you stop down to T2.8 or T4 instead of turning into octagons. And the range is much shorter: six focal lengths against the eighteen the S4/i family covered, from 12mm to 300mm.

## S4 FF/i specs, lens by lens

Table: Cooke S4 FF/i, from Cooke’s specification sheet (version 101926)

| Lens | Close focus* | Length | Weight (PL) | Angle of view, FF | Filter |
|---|---|---|---|---|---|
| 18mm T2 | 300 mm | 124 mm | 1.80 kg | 101.9° | none |
| 25mm T2 | 280 mm | 110 mm | 1.65 kg | 83.6° | M82 |
| 35mm T2 | 280 mm | 107.5 mm | 1.70 kg | 63.4° | M82 |
| 50mm T2 | 350 mm | 94.6 mm | 1.45 kg | 46.7° | M82 |
| 75mm T2 | 450 mm | 89.3 mm | 1.60 kg | 32.2° | M82 |
| 100mm T2 | 650 mm | 106.6 mm | 1.65 kg | 24.4° | M82 |

*Minimum marked distance, measured from the sensor. All six lenses: T2–T16, 87 mm front diameter, 270° focus rotation, 75° iris rotation, 0.8 module gears, PL or LPL mount.

![The Cooke S4 FF/i 50mm lying on its side under a spotlight, showing the gold Cooke badge, the focus scale in feet, two geared rings and the steel PL mount](https://www.4filmmakers.co/news/cooke-s4-ff-i/images/50mm.webp)
*The 50mm, lightest of the set at 1.45 kg. Image: Cooke Optics.*

## Lighter than the S4/i? Depends how you compare

Some launch reports say the new set is 29% lighter on average than the S4/i. We couldn’t get that number out of Cooke’s two spec sheets, whichever way we did the sum.

**Same focal lengths.** The six S4/i lenses at 18, 25, 35, 50, 75 and 100mm add up to 10.4 kg. The six S4 FF/i lenses come to 9.85 kg. That’s about 5% lighter, while covering a much bigger sensor. On the 50mm the gap is 50 grams: 1.5 kg before, 1.45 kg now.

**Same framing.** This is the fairer test if you’re moving from a Super 35 camera to full frame, because you’ll reach for a longer lens to get the same shot. A full-frame 50mm sees about what a 35mm sees on Super 35. Matched by angle of view, the S4/i equivalents (12, 16, 25, 35, 50 and 65mm) weigh 12 kg. The new set saves 2.15 kg, or about 18%, and most of it comes from the wide end: the S4/i 12mm weighs 3 kg and has a 156mm front, against 1.8 kg and 87mm for the new 18mm.

Table: S4/i (Super 35) against S4 FF/i, from Cooke’s spec sheets

|  | S4/i S35 | S4 FF/i |
|---|---|---|
| Coverage | 30 mm circle (Super 35) | Full frame |
| Focal lengths | 18, 12mm to 300mm | 6, 18mm to 100mm |
| Aperture | T2–T22 (300mm: T2.8) | T2–T16 |
| Iris | 8 straight blades | 9 curved blades |
| Front diameter | 110 mm on most, up to 156 mm | 87 mm on all six |
| Screw-in filter | M105 (longer lenses M120/M131) | M82 (18mm none) |
| Iris rotation | 91–96° | 75° |
| Close focus, 50mm | 550 mm | 350 mm |
| Close focus, 100mm | 950 mm | 650 mm |
| Mount | PL | PL or LPL |

Close focus tells a similar story. The 50, 75 and 100mm get much closer than their S4/i namesakes, and Cooke says hands and small props can fill the frame. At the wide end it goes the other way: the old 18mm and 25mm focused to 250 mm, the new ones to 300 and 280 mm. Small numbers, but the press text makes it sound like a gain on every lens.

## What it changes on set

The 87mm front on every lens is the detail camera assistants will like most. A clip-on matte box set up for one lens fits all six, so lens changes don’t mean swapping donuts or back plates. Check that your matte box has an 87mm ring before the job: most S4/i lenses had a 110mm front.

M82 filters cost less than M105 ones too. Plenty of stills zooms take 82mm, so you can find screw-in NDs and diffusion in that size at any camera shop. The 18mm has no thread, so on that one you’re back to a matte box.

Lengths vary more, from 89 mm on the 75mm to 124 mm on the 18mm, so check your focus motor still lines up with the ring after a lens change. If you pull with a wireless system, recalibrate every lens anyway: the 75° iris throw is shorter than the S4/i’s, so old motor presets won’t match.

Then there’s /i. Each lens sends focus, iris and inertial data, plus a shading and distortion map calibrated at the factory. On a VFX or virtual production job that saves real time in post. On a corporate shoot with no compositing, you may never touch it, and you pay for it anyway. To record it you need a camera or lens-data box that reads /i through the mount contacts or the cable connector.

## Who should care about a $90,000 lens set?

Few owner-operators will buy these. Rental houses will, and that’s where you’ll meet them: at a day rate on a Venice, an Alexa LF or a V-Raptor, which are the cameras Cooke names. PL adapters also put them on E-mount bodies like the [Sony FX5](https://www.4filmmakers.co/news/sony-fx5-shipping-date/), though at 1.45 to 1.8 kg per lens you’ll want rods and a proper lens support on a small body.

Our take: the S4 FF/i makes the most sense for drama and commercials where faces are the subject, and for crews who want one set they can carry handheld all day. If you need T1.4 for night exteriors, Cooke’s own S8/i FF is the obvious alternative: a stop and a half faster, twelve focal lengths, but 2.1 to 3.5 kg per lens with a 104mm front. If what you’re after is a soft, gentle look on a mirrorless budget, it’s worth reading what Sigma did with the soft, mellow rendering of its [50mm F1.4 CL DG](https://www.4filmmakers.co/news/sigma-50mm-f1-4-cl-dg/).

Before you book a set, ask the rental house for test footage at T2 against bright practicals. Flare behaviour is half of what Cooke is selling here, and it’s the part spec sheets can’t show.

## Quick answers

**Q: How much does the Cooke S4 FF/i cost?**
$15,000, €13,000 or £11,000 per lens, as reported by RedShark News and PetaPixel. Cooke doesn’t list prices on its site. A full set of six comes to about $90,000.

**Q: Is the S4 FF/i available now?**
Dealers are taking orders. Cooke hasn’t announced a delivery date, so ask your dealer when stock lands.

**Q: Does it cover Super 35 too?**
Yes. A full-frame lens covers a smaller sensor without problems. Cooke even lists the Super 35 angles of view, from 82.2° on the 18mm to 17.8° on the 100mm.

## Sources

- Cooke Optics, [S4 FF/i product page](https://cookeoptics.com/lens/s4-ff-i/) and [specification sheet](https://cookeoptics.com/wp-content/uploads/2026/10/COOKE_S4-FF-i_Specification_101926.pdf), for all S4 FF/i data
- Cooke Optics, [S4/i S35 specification sheet](https://cookeoptics.com/wp-content/uploads/2021/11/COOKE_S4i_Specification_030623.pdf) and [S8/i FF page](https://cookeoptics.com/lens/s8-i-ff/), for the comparisons. Weight totals and percentages are our own sums from those sheets
- [Newsshooter](https://www.newsshooter.com/2026/10/20/cooke-s4-ff-i/), announcement on 20 October 2026
- [RedShark News](https://www.redsharknews.com/cooke-s4-ffi-full-frame-spherical-primes) and [PetaPixel](https://petapixel.com/2026/10/22/cooke-brings-its-legendary-s4-i-s35-lenses-to-full-frame-cinema-cameras/), for prices and the 29% weight figure
- [No Film School](https://nofilmschool.com/cooke-optics-s4-ff-i-lens-series) and [The Cine Lens](https://thecinelens.com/2024/12/11/cooke-retires-s4-series-after-20-years-of-excellence/), on the end of S4/i production
- Cover and product images: Cooke Optics, from the official S4 FF/i page