hezishohat 0 Posted May 21, 2017 Hi I use Nikon D500 in Nauticam NA-500 with Nauticam TTL converter installed and fiber optic cable to the YS-D1 I decide to try to work in manual mode on the strobe I noticed that it can work with pre-flash only. it that true or I'm doing something wrong Thanks, Hezi Share this post Link to post Share on other sites
Pavel Kolpakov 82 Posted May 21, 2017 (edited) Using that TTL-Converter (Nauticam #26308), you can set YS-D1 dial switch to both positions: "with pre-flashes", or "without pre-flashes", as you like it. Of course, you also have to set Converter to appropriate mode, via your camera menu. This is easy available to do underwater, when you need it. Yes, that Converter has manual mode without pre-flashes. It names "Controlled Manual Mode". It is popular for strobe battery saving, because pre-flash is excluded. Also it is popular for manual power control using camera wheel, such functionality is available in this mode. All manual modes are described in "User's Manual": Shooting in Controlled Manual Mode of TTL-Converter § Switching to Controlled Manual mode during the diving (underwater) is useful feature. It gives possibility to set strobe power manually by the camera controls. User need not set power manually on underwater strobe body, he can keep hands on the housing. § Underwater strobes must be set in “S-TTL” (“DS-TTL II”) mode. Strobe’s dial (+/-Ev) corrector set to “0” position. § Switch TTL-Converter to Controlled Manual Mode using the camera menu: Bracketing/flash >> Flash sync speed >> 1/200 (Auto FP). Sync speeds marked as “Auto FP”, points TTL-Converter to Controlled Manual Mode without pre-flashes. Then, underwater strobe light power can be adjusted by camera controls, using “flash exposure compensation” function. § Available adjustment range for underwater strobe: from Minimum strobe’s power (displays as “-3ev” on camera screen) to Maximum strobe’s power (displays as “+1ev” on camera screen). Possible to set step 0.3ev or 0.5ev, by menu. § TTL-Converter does not make pre-flashes in this mode. § Pay attention, that “Auto FP” function also makes available to set very fast shutter speeds on the camera. To avoid mistakes for lighting using underwater strobes, set shutter speeds not faster than speed of synchronization for your camera. Most Nikon cameras with mechanical shutter have maximum sync speed 1/200 or 1/250 (without Auto FP). Some old Nikon cameras have electronic shutter and maximum synchronization speed up to 1/500 (without Auto FP). Shooting in Manual Modes of underwater strobe § Photographer can also switch system to Manual mode by the main dial switch on the strobe body. § If TTL-Converter is in TTL mode, then set “Manual mode with pre-flashes” by the the strobe dial switch. § If TTL-Converter is in Controlled Manual mode, then set “Manual mode without pre-flashes” by the strobe dial switch. § Adjust strobe’s light power by the second dial switch on the strobe body. Shooting without batteries (Manual mode only) § TTL Converter can work without batteries (by electric wire cables) in simple Manual Mode. § Underwater strobe must be set to "Manual mode without pre-flashes", by it’s dial switch. § Communication protocol between camera and TTL Converter is totally switched off. The “flash” sign disappears on the camera service screen. Camera does not recognize the TTL device on its hot shoe. Only manual flash control is available. § Power of underwater strobe light can be adjusted only by the strobe’s dial switch. Indication § Onboard 3-color status LED shows system information after each flash: o GREEN – “TTL is OK” o BLUE – “Manual Mode” o RED – “Low Battery” Edited May 21, 2017 by Pavel Kolpakov 2 Share this post Link to post Share on other sites
