This is the original SOLA originaly invented for photographers who need prober focus light. Besides the perfect balanced white light it features 3 levels of smooth red light, that enables you to get very close to all the fish life underwater. (why...? well - because fish can´t see red light). The red light has a very narrow wavelength - so don´t be mistaken and think you can use any red filter... this is simply better!
Besides used as focus light - any dSLR camera today had a video function. And what can be more perfect than a 600 lumen bright light. Also 3 setting on that one.