Simplicity and results... that's what we all want right? Taking your underwater photos to the next level requires lighting. For a lot of us, the number of choices out there can be daunting. It is difficult to determine what features and specifications will help you to get the photos you desire.

Remember to keep things simple, especially if you're looking for quick results.

Part of my responsibilities as the head of the photography department at a major dive resort is creating and teaching customized courses for our underwater photography students. In the process my colleagues and I have spent extensive amount of time shooting a variety of strobe systems from the leading manufacturers paired up with the Olympus Tough TG series cameras.

Our customers are typically coming to the resort for only 1-2 weeks at a time, and they want to leave with the best photos that they can. For us it is important to focus on easy. So we stuck to TTL(Auto), changing from shooting one to two strobes as well as macro and wide angle subject matter.

It became a very frustrating process. All too often the results were unsatisfactory. More often than not, the strobes was failing to adjust itself accurately and fire reliably. One of the leading marketed slave TTL strobes for the Olympus TG-5 and TG-6 cameras produced a usable image 40% of the time. So many lost shots!

TrueTTL Strobe Exposure

Then we encountered the game changer... the RC1 TTL Receiver for DS Strobes by Ikelite. Unlike strobes with a generic slave TTL mode, the RC1 Receiver delivers TrueTTL exposure via fiber optic cable with Ikelite DS51, DS160 and DS161 strobes. Cameras that have RC flash mode (like the Tough series) partner with the RC1 TTL Receiver, allowing more accurate and consistent exposure when compared to slave TTL.

The difference is that when the camera is set to RC flash mode it knows that a remote strobe is being triggered. So it sends different, more accurate information to the remote strobe. The strobe is no longer guessing and the exposure benefits from the strobe being calibrated directly by the camera.

Once we started shooting with the RC1, we were astonished by the consistently accurate results we were getting. Strobe accuracy shot up to 98-99% for both macro and wide angle. We could no longer blame the strobe for missing a shot. We could finally unlock the full potential of the TG-5 and TG-6 cameras.

Why Manual Strobes Aren't the Answer

There are so many factors that lead to frustration when shooting underwater. It's hard to constantly account and adjust for currents, lighting conditions, moving subjects, and varying depths, all while maneuvering in close to your subject. And keeping track of your gauges, your buddy, and your navigation.  It is a relief to eliminate the strobe performance from our list of things to be concerned about.

But TTL strobes isn't laziness or just for beginners. TTL is the standard for topside shooting, and it works just as well underwater when the camera is communicating correctly with the strobe.  

There are times that manual strobe exposure is desirable. For example, when the strobe is positioned remotely at a distance inside of a wreck. Or when you want to vary the intensity between two strobes for increased shadowing effects (though this can often be accomplished by positioning the strobes at different distances in relation to the subject).

Most of the time TrueTTL strobe exposure is the way to go underwater whether you're shooting macro close-up with the camera's awesome microscope mode or ultra wide angle with a FCON-T02 Fisheye Converter. 

Getting Correct Strobe Exposure with the RC1

To use a strobe in TTL mode with the RC1 Receiver, you need to set up your camera for the Olympus Wireless RC Flash System. Highlight flash settings in live controls and select [RC] (remote control). This setting will stay active when you turn the camera off and back on, so you don't have to re-set it every time you dive.

Turn your strobes on and set their power switches to TTL. Position your strobes to point at your subject. Take a photo.

That's it. You've got correct exposure!

How Big of a Strobe Do You Need

[discuss smaller AA battery strobes vs larger rechargeable strobes]


There are enough battles to fight underwater. We teach our students how to set themselves up for success so that they come back with photos they're proud to share. There are so many benefits for using TTL (Auto) settings for strobe work with the TG-5 and TG-6 cameras. Your results will benefit greatly from having more time to focus on getting yourself, the camera, and your strobes in the right position! 

Let me do you a favor and tell you that every time you add a new task to perform underwater, that's more distraction from what you are under there to do in the first place... which is dive!

We're familiar with almost every strobe on the market and we work with our customers to get the best results with whatever equipment they arrive with. It's difficult to watch shooters struggle with strobes after they've already made a big investment in them. There are workarounds and tricks to make almost any underwater strobe work with the TG-5 and TG-6 cameras. There's only one solution that I feel comfortable telling Tough users to trust in TTL mode, and that's using the RC1 TTL Receiver.