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The Aputure CF4 is the dedicated compact Fresnel for the STORM 80c. Its 4-inch lens changes the field from 15° spot to 40° flood through the fixture’s Mini ProLock mount. The matching CF4 Barn Doors are a separate eight-leaf accessory, so a rental described only as “CF4” may not include the doors.
- Beam
- 15° to 40°
- Mount
- Mini ProLock
- Fixture
- STORM 80c
Compatible fixtures
Aputure designed the CF4 specifically for the STORM 80c. The mount and optical position are not a generic Bowens configuration.
Key specifications
| Specification | Details |
|---|---|
| Fresnel model | CF4 Fresnel |
| SKU | AP0F056A35 |
| Mount | Mini ProLock |
| Lens diameter | 4 inches |
| Beam range | 15° spot to 40° flood |
| Dimensions | 14.0 × 8.7 cm |
| Weight | 0.53 kg |
| Included with Fresnel | CF4 Fresnel and carrying case |
| Barn doors | CF4 eight-leaf Barn Doors, sold separately |
Fresnel and barn-door roles
The Fresnel changes beam angle and concentration. The eight-leaf doors trim spill after the field is set. They do not turn a flooded field into the same optical result as spotting the Fresnel. For a complete shaping package, confirm both components rather than assuming the doors are in the Fresnel case.
Manufacturer output conditions
Aputure publishes the following STORM 80c readings at 5600 K and full output. Lux is shown without a derived calculator because the manufacturer’s foot-candle conversions in the same table are not internally consistent.
| Distance | 15° spot | 40° flood |
|---|---|---|
| 1 m | 36,000 lux | 12,500 lux |
| 3 m | 3,512 lux | 1,459 lux |
On-set use
Seat the Mini ProLock mount fully before tightening or moving the head. Set spot or flood with the Fresnel mechanism, then use the barn doors to remove spill. With a compact fixture, the accessory package is easy to split across cases, so count it before leaving the rental counter.
Rental and used-package checks
- Confirm the mount is Mini ProLock and the accessory is the CF4, not a Bowens Fresnel.
- Check the lens for chips, haze and scratches.
- Run the focus mechanism from 15° to 40° and confirm it holds position.
- Verify whether the eight-leaf CF4 Barn Doors are included; they are sold separately.
- Confirm the CF4 carrying case is present and the mount cap or protection is adequate.
Documentation and related equipment