Sony FX5 vs FX3 vs FX6: What Changed?

A stacked sensor reads out faster, the root of everything else: less rolling shutter, higher frame rates, and enough bandwidth to write RAW inside the body. It records 5K at 4992 x 3328 in 3:2 Open Gate using the full sensor height up to 60p, plus 4K up to 120fps and HD up to 240fps.

Sony positions the FX5 two ways: a straight upgrade from the FX3, or a compact B and C camera alongside BURANO and VENICE 2, for car mounts, drone work and tight corners. For the jobs we take in Da Nang, the second framing rings truer.

How do the FX3, FX5 and FX6 actually differ?

The differences fall into three groups: the sensor, what the body records internally, and what is built into the chassis. The table lists only rows we could verify from the announcement. Cells we are unsure about are left blank.

What are shooters saying about the FX5, and what will nobody know until units ship?

Short version: the sensor and the recording side get praise, but daily handling is where the real discussion is. One thing worth stating plainly: every review available right now was written on a pre-production body lent by Sony, on firmware that is not the shipping version. Sony has also published a major update roadmap, so some limits below may change.

Six things hands-on shooters complain about most

• The camera reboots for roughly 10 seconds every time you change codec or frame rate. This is the most repeated complaint. Going from 60fps back to 24fps, or from RAW to a compressed format, forces a restart. On a commercial or a music video this barely matters because you can reset the shot. On a wedding, an event or a documentary, those ten seconds can swallow a moment you cannot ask for again.
• A silent trap worth knowing: select Open Gate then push to 120fps and the camera restarts and quietly drops out of RAW into a lighter compressed format without telling you clearly. If you are not watching, you think you are still recording RAW. Anyone renting this body should re-check the format after every reboot.
• The label says 5K while the camera is actually recording 4K. In compressed formats the imager mode line still reads 5K while the line directly under it reads 3840×2160. Two contradictory readings on one screen.
• Open Gate currently records in RAW only. Sony states this in its own launch material. Open Gate in a lighter compressed codec is on the roadmap for a major update from August 2027 onward. The direct consequence is card and drive consumption.
• No built-in ND. Unlike the FX6, the FX5 still needs external ND. For beach and midday exteriors around Da Nang that is not a footnote, it is a mandatory item in the kit.
• It cannot take stills. The FX3 can, the FX5 cannot, not even JPEG. There is a button that looks exactly like a shutter button but it is an assignable grab button. Anyone used to grabbing a few production stills mid-shoot will miss it.

Three details rarely mentioned that hit the shoot day directly

• Anamorphic disables both stabilisation and autofocus. The body offers desqueeze ratios for monitoring, but switching them on stops autofocus and IBIS. If the plan was to pair the FX5 with an autofocus E mount anamorphic and keep both, know this first.
• The XLR handle and the detachable viewfinder compete for the same mount. Sony states the viewfinder cannot be used together with accessories fitted to the multi interface shoe, which includes the handle. You pick professional audio or you pick the viewfinder.
• Waveform and vectorscope exist but are small and cannot be moved. Better than nothing, but do not expect them to replace an external monitor when exposure needs care.

What this means for shooting in Da Nang

Commercial, short film, music video and corporate crews barely touch these limits, because takes can be reset and the format is usually locked at call time. Wedding, event and documentary shooters should think harder about the reboot behaviour, and should lock frame rate before the event starts rather than switching mid-ceremony.

For coastal exteriors the two items to budget from day one are a proper external ND set and enough cards for RAW. Cost details are in the section below.

The first independent lab numbers on a production unit (firmware V1.00) come from the CineD lab test published on 28 September 2026: rolling shutter in 5K 17:9 X-OCN LT measures 13.3 ms with dual gain on and 5.6 ms with it off; dynamic range at ISO 800 with dual gain on reaches 13.4 stops at SNR 2 (14.4 stops at SNR 1), drops to 10.6 stops with dual gain off, and base ISO 4000 gives 10.1 stops; exposure latitude is 11 stops in X-OCN LT against 9 stops in 10-bit XAVC S-I. Two takeaways for working shooters: record X-OCN LT when you need the shadows, and for fast pans or strobing lights consider switching dual gain off for the 5.6 ms readout, at the cost of close to 3 stops of dynamic range. S-Log3 encoding does not change with dual gain, so existing LUTs and grading workflows carry over. These are lab figures, not job experience.

Sources for this section: Sony official launch material dated 22 July 2026; the CineD review; and hands-on notes published by filmmaker Matt Johnson after using a pre-production body. CINEFY does not have an FX5 in hand yet and has not verified these points first hand.

Which costs are not in the sticker price?

The body price is not the working price. A rental customer wants the complete kit, and a complete FX5 kit costs meaningfully more than the bare body.

• The XLR handle sells separately, at roughly one sixth of the body price. The 96 kHz 32 bit float audio path only runs through that handle.
• The viewfinder cannot share the mount with the XLR handle. Renters usually want both, so add third party accessory cost.
• New battery family. It does not share batteries with our FX3 kit, so budget dedicated batteries and chargers.
• Cards. Sony only guarantees X-OCN on VPG400 rated CFexpress Type A. PetaPixel measured real X-OCN bitrate at around 89 MB per second and found lower rated cards still recorded, with a warning. For rental stock we are not betting a client take on a warning message.

Which Da Nang projects suit the FX5, and should you wait?

It suits three situations: a compact B camera next to a larger A camera, projects needing vertical and horizontal cutdowns from one take, and tight spaces or aerial mounts. Less urgent for run and gun work needing fast ND changes, or jobs needing an SDI feed.

From May to August in Da Nang, our crew is used to someone holding an umbrella over the camera body between takes, and to scheduling around midday not for the talent but for the gear. The FX5 cooling design sounds like what we need, but it is still a line on a spec sheet.

Where the Vietnamese market stands

Several sellers here are already taking orders while Sony Vietnam has not published a dong price, and the dong figures on offer move week to week, so treat any of them as a quote that needs an expiry date rather than a market rate. Official warranty is 24 months on the body, 12 months on bundled accessories such as batteries and chargers. As for rental, as of writing we could not find anyone in Vietnam renting an FX5. If you need one in August, plan a fallback.

Wait or buy

If you are on an FX3 and it works, we lean toward waiting: the headline features sit in next year firmware, real accessory cost runs well above the body price, and the heat question only gets answered once cameras reach working shooters in late August. If you need a colour matched B camera beside Sony A cameras and shoot a lot of Open Gate, look earlier.

CINEFY is holding at wait and watch. Our inventory has the Sony FX3 with the G Master lens set, and the full FX3 package rents at 2,600,000 dong per day, taken from the CINEFY equipment rental page, checked on 23 September 2026, excluding VAT 8%. If the FX5 lands and nobody asks for it, it is an expensive camera eating demand from an FX3 kit that already works. Full list on our film equipment rental page.

Sony FX5 frequently asked questions

Related reading

• Camera rental in Da Nang 2026
• Complete film equipment checklist 2026
• Camera equipment rental Da Nang 2026

Last updated: 30 September 2026. Specifications sourced from the Sony announcement of 22 July 2026. Rolling shutter measurement: slashCAM, 24 July 2026 (pre-production body); lab figures: CineD, 28 September 2026 (production body, firmware V1.00).

By CINEFY Team, a production crew based in Da Nang, working since 2022 across more than 200 projects.