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Pavel Kolpakov

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Everything posted by Pavel Kolpakov

  1. Yes, hope it will be ready at the end of March.
  2. Next week there will be announce of Olympus TTL and Panasonic TTL boards. After them, there will be Sony, next month.
  3. Classic underwater strobe produces a mono pulse flash, and TTL trigger controls such mono flash. But HSS is flash flicker with frequency 40khz for a long time, this is absolutely another flash lighting. If Retra underwater strobe change mono pulse to flicker for HSS, everything will change. The control will require firmware update for TTL triggers too. But this is not a great problem. For example, UWTechnics company is ready to update previous boards firmware, for a small fee, if "Retra HSS" feature appears on the market. The new boards will include this feature as default.
  4. I was also surprised by that once, in the past. But what to do ...
  5. "Ready" light on most of underwater strobes switches On rather far before stop moment. Underwater strobe continue charging after ready signal.
  6. I tested Z7 camera with Nautican #26308 TTL-Converter previous week. TTL lighting worked normally. It is recommended to set -0.5Ev flash exposure compensation in menu, - this is right correction. Also, I advice to use "spot" type metering in that camera, to get maximum TTL accuracy. By the way, last boards #26308 (manufactured since January) have updated firmware, Z7/Z6 cameras are automatically detected there, and -0.5Ev level is already preset as default zero setting for Z cameras. Those new boards don't need -0.5Ev correction for Z7. Anyway, If your Z7 camera requires more than -0.5 Ev correction for TTL now, it means that something wrong in setup or wrong camera settings. Do you have User's Manual for that TTL board #26308? I can help to clarify the problem, if you want, in messenger.
  7. A week ago at our office i tested D850 camera with the housing and DS-160 strobes, using TTL-Converter installed in the housing. That system had not original Manual trigger, but TTL-Converter pre-installed by dealer. So, this is not exactly your setup, but anyway .... I set normal sync speeds up to 1/250 (in TTL mode) by D850 menu, - lighting worked fine. I also tried to set FP command by menu, to switch TTL-Converter to M mode as usual for such TTL-Converter, - everything worked fine. I did not see any difference in system work, comparing to other Nikon cameras. I think, it is possible to find the reason the problems regarding sync speed, if evaluate your concrete setup. Maybe the reason is self-made optical cable, maybe manual trigger, maybe camera settings , etc. I can help. We can discuss the system in messenger, if you want.
  8. No problem, this is just another version of that board, it has another switch type. This board is also fresh version, firmware can be updated. Currently it supports the following strobes: Z-330, Z-240, YS-D1, YS-D2, YS-250, DS-161, DS-160. Retra Pro strobe ttl-profile will be available and will be added to firmware of all TTL-Converters, when this strobe is available. We will ask Oskar to lend a pair of samples, for ttl-profile tests. If you want to update your board firmware by any new profiles (i mean future strobes on the market, like Retra Pro), you can contact Nauticam, send the board to manufacturer for update, for some fee. The same way is available for UWTechnics TTL boards update. It is available for some fee. Contact manufacturer. If there will be any questions, contact me, i can help too.
  9. I can help answer this question, if Oskar permits me. Nauticam #26308 TTL-Converter will support Retra strobe TTL, when this strobe appears on the market. Retra strobe TTL-profile is planned to be in Converter firmware, set to position "9" onboard rotary switch.
  10. I can confirm, UWTechnics company is ready to open HSS option in TTL-Converters firmware. It will be done the same time when Retra HSS strobe appears on the market. UWTechnics TTL-Converters load full data of Shutter Synchronization (including HSS parameters) to camera brains and graphic menu. For Canon cameras it looks like this:
  11. I can confirm, that product supports second curtain, it works. This TTL-Converter is intellectual device, the same level as original Canon Speedlights. It supports all Canon cameras, independently of model and TTL-protocol version. Here is the picture of available 1-st/2-nd curtain settings, which this TTL-Converter loads into the camera menu: UWTechnics TTL-Converter for Canon fully supports camera menu for external flash control, saves all these settings in onboard non-volatile memory, automatically load settings to camera menu and to camera brains during communication. Many useful features are available via that TTL board, for example possible to switch to M mode by camera menu and adjust underwater flash intensity manually by camera scale. It gives more wide and accurate manual adjustment, than underwater strobe dial switches. I am not sure, but suppose these are the single TTL-Converters on the market which support Canon menu so deep.
  12. Yes, electric connection supports TTL. Rear curtain synchronization is supported in all modes.
  13. Hi Jon, You can look TTL-Converter for Aquatica housings. It supports optical TTL and wired TTL simultaneously.
  14. #26221 is dual cable. If you look into the User's Manual, there written that dual optical cables are not recommended for TTL control with Nautcam housings, because of optical connector construction. TTL-converter #26308 currently is calibrated for #26216 cables usage. It is a new single cable with very high transmission index, because of 613 cores inside. If you use any other (old) Nauticam single cable, Ok, it will work too, but TTL accuracy will be better using #26216. I recommend you to purchase a pair of #26216 cables for your TTL system. +/- Flash exposure compensation .... - you can adjust a little bit by Z-240 right dial, but much more effective would do it by camera controls. On Z240 body you have to rotate right dial ("+" correction range is from 12 to 9 o'clock; "-" correction range is from 12 to 6 o'clock). But Inon algorithm of correction sometimes is not effective, and anyway, Z-240 has very small adjustment range. The effective and wide-range "Flash exposure compensation" is available only by camera controls. Nikon cameras usually have a scale -3Ev....0....+1.5 Ev, newest cameras have even more wide scale. TTL-Converter supports such camera commands for +/- correction. I recommend to use camera controls and scale for +/- flash exp. compensation, but not Z-240 right dial.
  15. I can help you. Do you have User's Manual for such board? If not, i can send by e-mail. In short words, the initial settings are following: Rotary switch on board: The rotary switch (positions 1....9) on that TTL board is purposed for strobe type select. For Inon Z-240 you must set it to "1" position. But on your photo i see that switch at "0" position, which means fixed M mode set by hardware tools. You have to set it to "1", then TTL will work. If TTL works normally, it confirms by "green" LED light on the board after each shot. In M mode the LED light is "blue". If battery is low, LED lights "Red'. Switching TTL/M by Nikon camera menu: Check your camera menu sync speed setting. For TTL mode in system you have to set any normal sync speed by your camera menu, for example 1/200 (any speed without "Auto FP" mark). Because "Auto FP" command in that menu is assigned for fast switching electronics to M mode underwater. Fiber optical cables: Use only new Nauticam #26216 fiber optical cables (613 cores inside), this TTL board is tuned for them. Inon Z-240 initial settings: Set Z-240 left dial (mode selector) to "S-TTL" position. Set Z-240 right dial to "12 o'clock" position, as initial setting. This means zero correction +/-. Later you can use +/- exp.compensation by that right dial, as well as by camera +/- flash exp. compensation. Set Z-240 magnet to "down" position (push down and lock).
  16. Tom is right. Normal Sync Speed (shutter window is fully open) is determined by the camera, not the strobe. Underwater strobes work only with fully open camera shutter, because they produce flash mono pulse only. Underwater strobes don't support HSS. Mechanical shutter of modern DSLR cameras has sync speed about 1/200 s. This is fast enough for 99% of underwater shooting tasks. Don't forget that flash duration is just 1/1000 by itself, it freezes moving underwater objects very well. If you need more fast sync speed with underwater strobes for any special aim, then use cameras equipped with electronic-mechanical shutter. For example, one of my cameras Nikon D50 has sync speed up to 1/500. But believe me, for normal cases this is not necessary. I used sync speed 1/500 with underwater strobes only 1 time for all years of underwater shooting. Don't forget that camera has other controls as well, for getting desired exposure. If you need a speed more fast than 1/500, than use land strobe in the housing. This case High Speed Synchronization (HSS =40 khz flash flicker) is available, for speeds up to 1/8000.
  17. Hi Tomek, Sync cord is just a wire, nothing more. For uw strobe automatic light control you need electronic TTL-Converter. Device supports rather complicated dialog with camera by 6-wire Canon HotShoe interface and controls lighting exposure. At device output you can connect YS-D2 by fiber optics or by sync cord.
  18. Dealers say that this is Meikon company product. https://meikon.com.hk/products/st-100-underwater-strobe
  19. Products are following: NA-D300s housing - 1000 USD; 230mm Glass dome fisheye port #18808 - 1200 USD; N60G Macro port #18701 - 230 USD.
  20. The price is slightly reduced: 1000 USD
  21. Nauticam NA-D300S housing. Price - 1100 USD. Condition - like new. Complete factory kit, including passport, spare o-ring and accessories. i also can sell glass ports together with the housing, at a good price. Ports are just slightly used. Worldwide shipping. PayPal is accepted.
  22. Hi, If you really think about TTL, better buy Z-330 or Z-240. Nauticam D850 housing is compatible with 2 variants of TTL-Converter: #11031-II UWTechnics and #26308 Nauticam. Both have the same functionality. Also you need a pair of 613 core optical cables, - #26216 Nauticam. Yesterday i test Nikon D850 with #11031-II product and few different strobes, - TTL system worked very nice.
  23. Bob, If you want to find the reason, let's discuss your setup and shooting in messenger, step by step in details. Ok? I will try to help. Hope we can solve the issue.
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