Digital TTL
With Digital TTL you eliminate the guesswork and let the camera and strobe set the appropriate exposure. When shooting in the TTL mode, the ROC LED panel will provide feedback that shows at what level the strobes were fired.
Manual bracketing (TTL based)
ROC allows you to take it a step further and use the TTL information and then manually bracket above and below the previous setting. For example, shoot your subject in TTL (as above). Then you can adjust the strobe power up and down to fine tune the exposure.
Manual
If you want to shoot in full Manual, ROC will allow you to manually adjust most TTL compatible strobes up or down in 12 half stop increments. The LED panel provides constant feedback as to what level the strobes are set.
Combine these exclusive ROC features along with the instant feedback of digital photography and getting that perfect shot is made easy.
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Digital Camera Housing Tetra For Nikon Coolpix 5000 
