Sony FX3
Original ILME-FX3, with a full-frame sensor. This is not the FX3A. APS-C/Super 35mm is disabled in 4K.
LUMACTA NEWS / COMPARISON TOOL
Compare cameras and lenses
Start with the job, then compare the numbers. Choose Sony cinema-camera bodies or Sony E APS-C zoom lenses, check the evidence and build a carrying or cost scenario. This tool compares specifications; it adds no new hands-on test.
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ONE PRODUCT FAMILY
Cinema-camera bodies
Original ILME-FX3 and ILME-FX30 bodies, using battery-and-SD-card mass. The FX3A is outside this comparison. A shared E-mount does not guarantee sensor coverage: Sony locks the original FX3’s APS-C/Super 35mm mode off in 4K, so the APS-C zooms in the other comparison are not guaranteed FX3 4K kits.
Sony FX30
ILME-FX30, with an APS-C sensor. The mass comparison includes a battery and SD card on both bodies.
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| Aspect | Sony FX3 | Sony FX30 |
|---|---|---|
| Exact model | ILME-FX3 (original) [1] | ILME-FX30 [3] |
| Sensor format and dimensions | Full frame · 35.6 × 23.8 mm [2] | APS-C · 23.3 × 15.5 mm [3] |
| Lens mount | Sony E [2] | Sony E [3] |
| Body with battery and SD card | 715 g · battery + SD card, without XLR handle [2] | 646 g · battery + SD card, without XLR handle [3] |
| Body size, excluding protrusions | 129.7 × 77.8 × 84.5 mm [2] | 129.7 × 77.8 × 84.5 mm [3] |
| In-body stabilization | 5-axis sensor shift; effect depends on lens specifications [1] | 5-axis sensor shift; effect depends on lens specifications [3] |
| APS-C lenses and 4K coverage | APS-C/Super 35mm locked off in 4K. APS-C lenses may produce dark edges. [4] | APS-C sensor. Confirm the exact lens and shooting mode; no complete compatibility matrix is certified here. [3] |
Start with the work
Keep the lens decision in the budget
Start with the sensor coverage and movie modes your lenses must support. A physically fitting mount is only the first check.
- For the original FX3, the documented 4K crop restriction makes full-frame lens coverage a practical requirement when you need an unobstructed full frame. Do not treat the APS-C zoom list as a ready-made FX3 4K recommendation.[4]
- The FX30 is the APS-C body in this pair. Check the exact lens, camera firmware and shooting mode before purchase; the tool does not certify a compatibility matrix.[3]
Plan the complete carrying load
The 69 g body difference is useful arithmetic, but it is a small part of many complete cinema rigs.
- Both listed body weights include a battery and SD card. Add the same compatible lens allowance to compare bodies fairly; include a handle, microphone, cage and spare batteries separately.[2] [3]
- Sensor dimensions and mass do not measure autofocus reliability, rolling shutter, dynamic range or low-light image quality. Use the linked guide for the wider decision and separate its experience claims from this specification tool.[2] [3]
Use your own planning assumptions
Adds each camera’s cited operating mass including battery and card to the same lens allowance. Check mount, image coverage and recording mode separately; these lens-family entries are not automatically a compatible camera kit. Handles, cages, caps, straps, plates and other accessories are excluded. Enter their mass separately in your own complete-kit check.
Optional. Leave blank for no combined-mass calculation. Use 0 only when a zero allowance is intentional.
- Sony FX3: Enter a mass allowance to calculate.
- Sony FX30: Enter a mass allowance to calculate.
Your price worksheet
Enter prices you have checked yourself, in one currency. This page does not import offers, convert currencies or confirm availability, tax, shipping or what a seller includes. Blank prices are excluded from the arithmetic.
Your mass and price inputs remain in this page. They are not included in the comparison link.
ONE PRODUCT FAMILY
Sony E APS-C zoom lenses
Only the Sony E versions are compared. These are APS-C lenses, not full-frame coverage promises. Nominal 35mm-equivalent framing uses 1.5×; actual focal length and the physical F2.8 aperture do not change. As checked on October 28, B091’s Sony E launch is scheduled for October 29, 2026; stock is not verified.
Tamron 16–50mm F2.8 A
B091, Sony E version. Announced October 14; manufacturer launch date October 29, 2026. Not claimed in stock or tested by Lumacta.
Sigma 18–50mm F2.8 DC DN Contemporary
C021, Sony E version. The size and weight are specific to Sony E, rather than Sigma’s generic L-Mount headline specification.
Tamron 17–70mm F/2.8 Di III-A VC RXD
B070, Sony E version. Longer reach with documented VC; the larger mass is a specification, not a verdict on handling or optical quality.
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| Aspect | Tamron 16–50mm F2.8 A | Sigma 18–50mm F2.8 DC DN Contemporary | Tamron 17–70mm F/2.8 Di III-A VC RXD |
|---|---|---|---|
| Model and compared mount | B091 · Sony E · APS-C [5] | C021 · Sony E · APS-C [9] | B070 · Sony E · APS-C · RXD autofocus [7] |
| Availability evidence, October 28 | Announced; Sony E launch scheduled October 29, 2026. Stock unverified. [6] | Existing manufacturer-listed model. Live stock and prices unverified. [9] | Sony E released January 14, 2021. Live stock and prices unverified. [7] |
| Actual focal range | 16–50 mm [5] | 18–50 mm [9] | 17–70 mm [7] |
| Maximum aperture across the range | Constant F2.8 [5] | Constant F2.8 [9] | Constant F2.8 [7] |
| Manufacturer lens mass | 305 g · manufacturer lens mass [5] | 290 g · manufacturer lens mass [9] | 525 g · manufacturer lens mass [7] |
| Diameter × published length | 64.4 × 79.6 mm · front tip to mount face [5] | 61.6 × 76.5 mm · filter surface to mount [9] | 74.6 × 119.3 mm · front tip to mount face [7] |
| Filter thread | 55 mm [5] | 55 mm [9] | 67 mm [7] |
| Minimum focus, wide / tele | 0.15 m / 0.29 m · from image plane [5] | 0.121 m / 0.30 m · from image plane [9] | 0.19 m / 0.39 m · from image plane [7] |
| Optical stabilization evidence | No optical stabilization · explicit Tamron statement [8] | Unverified in the reviewed primary documents; no absence inferred from omission. [9] [10] | VC optical stabilization · manufacturer specification [7] |
Read the field-of-view assumption
These calculated ranges assume Sony APS-C at 1.5×, with no additional recording-mode or electronic-stabilization crop. Actual focal length stays unchanged. This is a field-of-view comparison, not full-frame image-circle coverage or a transmission measurement.
- Tamron 16–50mm F2.8 A: 24–75mm full-frame field-of-view equivalent.
- Sigma 18–50mm F2.8 DC DN Contemporary: 27–75mm full-frame field-of-view equivalent.
- Tamron 17–70mm F/2.8 Di III-A VC RXD: 25.5–105mm full-frame field-of-view equivalent.
Start with the work
Prioritize a small everyday kit
The Sigma is the lightest listed lens; B091 trades 15 g for a wider starting point. Decide whether that framing difference solves a real constraint.
- Sigma’s 290 g and B091’s 305 g differ by 15 g before caps and other accessories. Their nominal wide ends are 27 mm and 24 mm equivalent at 1.5×. This is a framing comparison, not an image-quality ranking.[9] [5] [8]
- B091 is announced with a Sony E launch date of October 29, 2026. A listed date does not establish local stock, shipping time or an independently tested sample.[6]
Prioritize reach and stabilization
The 17–70 reaches further and has documented VC, with a larger carrying and filter footprint.
- B070 reaches a nominal 105 mm equivalent at 1.5× and weighs 525 g: 220 g more than B091 and 235 g more than Sigma. Its 67 mm filter differs from the other two lenses’ 55 mm threads.[7] [5] [9] [8]
- Tamron explicitly distinguishes B070’s VC from B091’s lack of optical stabilization. Sigma’s reviewed product page and manual do not explicitly settle that field here, so it remains unverified. No usable stabilization-stop rating or body/lens cooperation guarantee is inferred.[8] [9] [10]
Use your own planning assumptions
Adds each bare lens’s cited mass to the same camera allowance including battery and card. This arithmetic does not certify mount, image-circle or recording-mode compatibility. Handles, cages, caps, straps, plates and other accessories are excluded. Enter their mass separately in your own complete-kit check.
Optional. Leave blank for no combined-mass calculation. Use 0 only when a zero allowance is intentional.
- Tamron 16–50mm F2.8 A: Enter a mass allowance to calculate.
- Sigma 18–50mm F2.8 DC DN Contemporary: Enter a mass allowance to calculate.
- Tamron 17–70mm F/2.8 Di III-A VC RXD: Enter a mass allowance to calculate.
Your price worksheet
Enter prices you have checked yourself, in one currency. This page does not import offers, convert currencies or confirm availability, tax, shipping or what a seller includes. Blank prices are excluded from the arithmetic.
Your mass and price inputs remain in this page. They are not included in the comparison link.
Sources and method
Facts in the tables link to the source list below. Mass and field-of-view outputs are transparent arithmetic using the stated inputs; they do not measure image quality, autofocus, stabilization, noise or real recording time.
Manufacturers use different length conventions; a listed lens length is not its maximum extended zoom length. Minimum focus distance is measured from the subject to the image plane, rather than from the front element to the subject. The nominal 1.5× framing calculation does not change a physical F2.8 aperture or its exposure setting.
- Sony: original ILME-FX3 specifications
- Sony: ILME-FX3 help guide specifications
- Sony: ILME-FX30 help guide specifications
- Sony: FX3 APS-C/Super 35mm and the 4K restriction
- Tamron: 16–50mm F2.8 A (B091) specifications
- Tamron: B091 announcement, October 14, 2026
- Tamron: 17–70mm F/2.8 Di III-A VC RXD (B070) specifications
- Tamron Americas: wide and standard zoom comparison
- Sigma: 18–50mm F2.8 DC DN Contemporary, Sony E specifications
- Sigma: C021 instruction manual