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  1. The strobe news is that after a short life span, Retra has discontinued its well loved underwater strobe. Let us have some fun and speculate for the reasons why and what the future may hold. Retra may have discontinued its strobe for one of three (or more) reasons: a) Retra ran out of money b) problems with the distributor of a vital part c) a spectacular new Retra design My guess is c): Retra will abandon the xenon tube. Retra will give us a new and affordable strobe based on LED light. I say this because already on the market are two commercial LED-based underwater photo strobes based on LED's: the Lume Cube 1500 (a toy really), and the Subtronic Sirius strobe (1,2). The underlying reason is that underwater photo xenon-tube strobes have been failing prematurely as documented in these pages by members of Wetpixel, as the tubes fail or break (Sea&Sea), or they lose luminosity as in the case of Inon Z240 strobes. Compared to the xenon tube, the LED is much tougher, less expensive, and has a longer life. Its practicality is proven by the two commercially available strobes mentioned above. The digital electronics required are inexpensive and well known, with a proven track record (3, 4). Right now we can only wonder and speculate, but I do believe the hand writing is on the wall: in the near future underwater LED strobes will become the norm (4). References: 1. https://www.bhphotovideo.com/c/product/1192932-REG/lume_cube_lc_11b_1500_lumen_on_camera_bluetooth.html?ap=y&c3api=1876%2C92051678762%2C%2C&gclid=Cj0KCQjwibDXBRCyARIsAFHp4fonOSVTTkGt-3hNwxWXd9Oz-JzijKaTLgHp2aygQKKCerUbogM8OcAaAl5dEALw_wcB 2. http://subtronic.de/productView.php?product=Sirius 3. http://wetpixel.com/forums/index.php?showtopic=40398 4. http://wetpixel.com/forums/index.php?showtopic=60816
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