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Underwater strobes at times are not triggered by their fiber optic cable. Several types of cables are available, and to determine which one carries the most light, I tested 4 different cables. Materials: The cables were one Toslink cable 4 mm o.d.,1 meter long (Fig 1 &2, upper left); two commercial 1.4 mm coiled multicore cables: one was labelled 1000 cores (bottom left), and one was labelled Multicore (upper right); the fourth cable (lower right) was a commercial 1.4mm coiled, single fiber cable. I used a piece of black foam rubber to hold the tips of four cables on a black background. The free cable ends were held together in front of a single bright light. I used a Nikon D500, 1/250 sec, variable f stop, for the photos. Results: It was a bit tricky to get the photos to show differences in cable brightness, as the points of light tended to appear the same, unless I played around with the f stop. The 3mm Toslink cable was the brightest, followed by the multi-strand cable, then the 1000 core cable, while the commercial single strand, coiled, 1.4 mm fiber cable was rather dim. Close up photo (as the notches are all on the same side of the lights, I suspect they are caused by some external artifact).. About 1 meter distance. Comment: These findings agree with previous Wetpixel posts that multifiber cables or 3 mm thicker Toslink cables transmit more light than single fiber coiled 1.4 mm commercial cables. The present findings are qualitative, and quantitative photometry would be better. However, the present photos show the Toslink cable transmitted the most light, followed by the multi strand cables. Conclusion: Better light transmission, toughness and low price indicate that Toslink cables, followed by multi strand cables, are a good choice to trigger UW strobes. Note: Toslink cables are available from Amazon, eBay and others as digital optical audio cable. References: 1. Erratic firing of the Backscatter Mini Flash, several excellent comments: use larger diameter f.o. cable. https://wetpixel.com/forums/index.php?/topic/66482-firing-backscatter-mini-flash/ 2. Dave Hicks comment. https://wetpixel.com/forums/index.php?/topic/66482-firing-backscatter-mini-flash/&tab=comments#comment-426656 3. Bvanant (Bill VanAntwerp) on homemade 613 fiber optic cables. https://wetpixel.com/forums/index.php?/topic/66482-firing-backscatter-mini-flash/&tab=comments#comment-426543 4. FO Cable Problem with strobe and Nikon z7 II. https://wetpixel.com/forums/index.php?/topic/67509-problem-with-strobe-and-nikon-z7-ii/&tab=comments#comment-426782 5. Excellent write up on DIY fiber optic cables, with useful comments by many Wetpixel contributors. https://wetpixel.com/forums/index.php?/topic/60564-diy-fiber-optic-writeup-with-parts/&tab=comments#comment-387130 6. Stuartv on fiber optic multi strand cables: https://wetpixel.com/forums/index.php?/topic/60564-diy-fiber-optic-writeup-with-parts/page/3/&tab=comments#comment-424488 =
Selling my custom made fluorescent Inon-Z-240 Type 4 strobe with rotating blue filter for underwater Fluorescent Photography. You can swing this filter into place for such imagery or move it out of the way for regular flash. No need to dive with non-moveable filters in place and enjoy the best of both worlds. Includes Z-240 strobe in excellent condition (never been flooded and well taken care of), 1" ball mount, protective body cover, diffusers and red night filter + 0-ring kit. Along with the swing filter assembly and a blue high quality glass filter. Price: $400 + USPS Medium Flat Rate Priority Shipping. Payment must be made through Paypal to protect buyer and seller. Thank you and happy diving
Selling my spare Inon S-2000 strobe with 1" ball mount. It's never been flooded and in good working condition. Price $250 + Shipping in USPS Medium Flat Rate Priority Mail Payment must be made with Paypal to protect buyer and seller. Thank you and Happy diving :-)