Profoto

Profoto Gel OCF II Half CTO

Name: Profoto Gel OCF II Half CTO
Brand: Profoto
SKU: Gel

Profoto OCF II Half CTO gel adds precise warmth to your off-camera flash for natural-looking on-location portraits.

$70.00*

✓ In Stock on Amazon.com

*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Profoto OCF II Half CTO gel is a purpose-built color correction accessory for Profoto's off-camera flash ecosystem. The Half CTO designation means it shifts the flash output partway toward warm tungsten tones, making it a go-to tool for photographers who need to blend flash with indoor ambient lighting or add a natural warmth to skin tones during portrait sessions. The OCF II system's magnetic mounting design allows the gel to snap into place in seconds, streamlining on-location workflows where time and lighting conditions change rapidly.

As part of Profoto's tightly integrated accessory line, this gel is precision-cut to match OCF II-compatible flash heads without light leaks or vignetting. The heat-resistant material maintains consistent color transmission across extended shooting sessions. While the per-unit cost is higher than buying universal gel sheets, the trade-off is convenience, consistent sizing, and a secure magnetic fit that eliminates the tape-and-velcro approach common with third-party gels.

Specifications

Brand

Profoto

Product Line

OCF II

Gel Type

Half CTO (Color Temperature Orange)

Attachment

Magnetic

Compatibility

Profoto OCF II-compatible flash units

Pros & Cons

👍 Pros

Magnetic attachment allows fast gel changes during shoots without fumbling with clips
Half CTO strength provides a versatile warming effect suitable for matching ambient light or creative color work
Compact size adds virtually no bulk to your off-camera flash kit
Profoto's gel material is engineered to resist heat degradation from repeated flash use

👎 Cons

Only compatible with Profoto OCF II-system flashes, not usable with other brands
Single gel included at a premium price compared to generic gel sheet packs
Half CTO is a fixed color shift with no adjustability between quarter and full CTO
Small physical size means it can be easy to misplace in a gear bag

Frequently Asked Questions

What color temperature shift does the Half CTO gel provide?

The Half CTO (Color Temperature Orange) gel shifts your flash output approximately halfway toward tungsten, adding a moderate warm tone without fully converting the light to tungsten balance.

Which Profoto flash units is this gel compatible with?

The OCF II gels are designed for Profoto's off-camera flash units including the A-series and B-series speed lights that accept the OCF II gel system.

How does the OCF II gel attach to the flash head?

The OCF II gels use Profoto's magnetic attachment system, allowing them to snap on and off the flash head quickly without clips or adhesives.

Can this gel be stacked with other OCF II gels for a stronger effect?

While physically possible, stacking gels reduces light output and can cause uneven coverage. For a stronger warming effect, Profoto offers a Full CTO gel in the OCF II range.

How durable is this gel with regular use?

Profoto's OCF II gels are made from heat-resistant material designed to withstand the heat output of compatible flash units during normal shooting sessions.