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Pavel Kolpakov

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Everything posted by Pavel Kolpakov

  1. I tested HSS today with Seafrogs A6xxx and A7 III housings, on speeds up to 1/8000 s. Actually i like HSS feature
  2. Dialog protocol is little bit different for 3-pin configuration. It would require a new firmware for TTL-Converter, changed schematic. HotShoe plug is also different. And the board would require 2 batteries onboard. So, it would be totally a new product. I asked many Nauticam users a year ago, - if somebody needed a new TTL-Converter development for old style HotShoe m4/3 - ? But there were almost no requests, just 2-3 people were interested. Because uw photographers now mainly use new style HotShoe m4/3 cameras, almost all asked a miniature TTL board without batteries, mounted directly to transparent window. And it was done.
  3. Yes, of course, i mean m4/3 cameras supporting mini-flash on the HotShoe. Olympus / Panasonic began to produce such HotShoe for it since 2016. Nauticam mainly produces housings exactly for such cameras in m4/3 format (EM1-II, EM-1 III, EM5-II, EM5-III, EM1-X, GH5, GH6 etc.). But G9 has old style HotShoe, yes, Nauticam has a housing for it. For new style HotShoe m4/3 exactly was developed TTL-Converter which did not require onboard batteries. It has micro-current consumption from HotShoe +5v power pin. Sorry, it does not support old style m4/3 HotShoe. Nauticam flash trigger is manual trigger, it uses only 2 pins (Xsync and Ground).
  4. 1) Yes, GH5 converter will be updated for Retra Pro support. 2) That TTL-Converter was developed for m4/3 new style HotShoe (for camera models produced since 2016). It does not support old version cameras which have 1 pin less on the HotShoe.
  5. There are 3 main things about Retra HSS: 1) Retra Pro strobe has Manual type HSS inside. Only Manual, not TTL. The light intensity is variable by the strobe knob only. Shutter speeds for Sony" 1/320-1/8000 2) For HSS work Retra strobe needs an intellectual optoelectronic device (for example TTL-Converter), connected between camera and strobe. TTL-Converter in necessary for intellectual dialog with camera regarding HSS information in system and also for making specially timed optical signal for Retra input. Retra HSS pulsating flash does not activated by other devices of Sony protocol (Sony system strobe, manual triggers etc.), it needs specially timed input signal. That is why UWTechnics TTL-Converters were updated by new firmware for such aim. 3) In TTL mode Retra strobe works the same TTL as other uw strobes. X-Sync speed is 1/250 (for Sony A7-A9). Camera and TTL-Converter limit X-Sync speed automatically for mono-flash uw strobes.
  6. Yes, of course, HSS pulsating flash is generated by Retra strobe. Changing the frequency, the strobe controls light intensity in HSS mode (by the strobe knob). HSS land strobes work the same way.
  7. In cooperation and with the support of Retra company, UWTechnics has built accurate TTL-profile and HSS up to 1/8000, - for Retra PRO strobe support. New Converters are available for Sony, for other cameras it is in development now.
  8. According the TTL-Converter #11075-HSS firmware, - If user keeps camera system in TTL flash mode, then normal X-Sync speed limitation works automatically (1/250), as necessary for all underwater strobes mono-flash. When user set Manual mode in flash menu ("WL" command), the system performs normal manual flash in all range of casual shutter speeds (up to 1/250), but in high speeds range 1/320 ... 1/8000 it works as HSS pulsating flash with variable frequency and necessary timings. Pay attention, that HSS pulsating flash works only for Retra profile (TTL-Converter switch pos.-7), but for other uw strobes (other switch positions) at high shutter speeds the flash is simply Off automatically (but high speeds 1/320 ... 1/8000 are still available for shooting with ambient light).
  9. Hi Stuart, First of all, I advice to change the batteries CR2032 in TTL-Converter to new, to avoid potential problems from this side. After it, check and move HotShoe cable connections. On land in comfortable conditions, test the TTL-Converter functionality according the User Manual, carefully step by step. Everything is described very easy there. Pay attention to camera settings and Z240 settings. If you need, here is online version User Manual for #11075 TTL-Converter: https://ru.calameo.com/read/00556083657cf35cf88c8 If finally you recognized that concrete unit is really broken /defected, please contact manufacturer by e-mail (uwtechnics@gmail.com) or your dealer, for replacement.
  10. YS-D1 and Z240 TTL-profiles are rather similar. Probably Z240 profile also can be used.
  11. Nauticam TTL-Converter #26308 (for Nikon) works with Retra Pro the same way as UWTechnics #11031-II, you can use the same settings.
  12. Yes, of course. During the communication TTL Converter and camera exchange a lot of information, analyze it, perform different actions. This is intellectual protocol.
  13. Yes, positions 2 or 3 of onboard switch. Pay attention: optical cable must be exactly 613-fiber type, because of transmission index. LEDs must be accurately positioned to core center. Those details are important for TTL LED control. That test info was only for Nikon TTL board #11031. I did not check such test by myself yet, cause i still don't have a strobe sample, but hope to get it in a week. I will notify about the results then.
  14. I plan to build TTL profiles for Retra strobe in a week. First turn is for Sony, some later for Nikon / Canon / Olympus / Panasonic. By the way, i also have some additional information for today, - few days ago Retra team tested new strobe with TTL-Converter UWTechnics #11031-II (Nikon TTL), it worked good enough using existing profile YS-D2 or YS-D1, only required some correction at the end of working range.
  15. Better try 613 fiber cable, at least for test. When you try such high transmission index cable, and positioned that single cable at the center of LED beam, and it does not work, Ok, then problem is that concrete LED trigger is weak / defected. Then, you can ask Nimar to change the trigger and optical bulkhead. By the way, you also can install Optical TTL Converter kit including another optical bulkhead. It will work anyway, and you can have TTL with your Z330 strobes.
  16. Hi Patric, This is well-known problem with the Dual FO cable and LED triggering. In optical bulkheads manufacturers usually use LED of narrow beam (8-15 degrees). Single LED optical bulkhead is purposed for a single separate FO cable. In case of a Dual cable usage, LED fires mainly between optical cables. How to solve the problem? 1 way: Use 613 type FO cable, it has the best transmission index on the market now, for example Dual FO cable HowShot 613L. Using it, test the triggering with concrete LED bulkhead. Usually this is enough solution, it works. If transmission is still not good enough with Nimar LED bulkhead, then modify the dual connector on the cable (print plastic connector by 3-D printer, or other way) to place optical cores very close to each other inside the connector. 2 way: Install the second optical bulkhead on the housing. Use 2 separate (single construction) FO cables. .
  17. Yes, UW Technics TTL-Converter #11073 installed in the housing, preserves pop-up flash functionality. Construction is made this way to expand the capabilities of synchronization system in the housing.
  18. Sony A7-A9 cameras make workable 1/250 sync speed for flash synchronization, only if camera recognizes Sony compatible communication protocol at HotShoe (original flash, or TTL-Converter on the HotShoe). Manual trigger does not perform any communication via HotShoe. This case 1/160 is the maximum fast sync speed allowed by the camera. If set faster than 1/160, you will have a dark strip on the image (shutter curtain).
  19. Yes, of course, it works. Retra team still did not give their new strobe for TTL-profile test yet. So, TTL-Converter firmware does not have any separate ttl-profile for Retra yet, but it has 2-3 similar ttl-profiles (DS-161, Pro-160, etc.), photographer can use one of them, no problem.
  20. Some photographers shoot in manual mode, the others prefer TTL only, others switch TTL / M dependently of circumstances. It depends on personal preferences and habits. But in any case, TTL automation simplifies and speeds up the work, increases the percentage of suitable images. If we are talking about Sony A7-A9 cameras, there is one more important thing: maximum sync speed for usage with underwater strobes, - using simple manual trigger it is 1/160, but TTL communication protocol makes available up to 1/250. For many Sony users the 1/250 available shutter speed is a key feature.
  21. Thank you. So, now Sea&Sea have 613-core cables: #50128, #50133 and #50135.
  22. Sea&Sea fiber optical cables are multicore, but I don't know what core is inside and what is the transmission index. We can only see that outer diameter is different from 613-core Nauticam, so probably this is another cable.
  23. #16029 TTL board supports Optical TTL and Electric TTL simultaneously. The simple way is to use Optical TTL with this housing. But, If you want to install an electric bulkhead on the top, no problem, the bulkhead is available (Nikonos, Ikelite, S-6), that TTL board supports it.
  24. Hi Patric, Yes, Nimar new housing (for Canon EOS RP) has only 1 optical bulkhead, moved to side. TTL Converter for it is product #16029 UWTechnics. The circuit board has the same shape as previous #16024, but includes 1 external LED moved to side. The correct picture will be available soon.
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