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  1. #21
    Staff
    Super Mod
    hark's Avatar

    Re: Looking for advice for remote flash control

    Quote Originally Posted by spb_stan View Post
    I did a shoot with flash units positioned every 30-50 feet along a long row of trees to highlight the portions of specific trees with the models distributed from the camera position to the end of the tree row of a little over 300 feet last month.
    Would love to see this image, Stan. If you are able, will you please share it with us?


    › See More: Looking for advice for remote flash control
    Cindy
    Flickr
    and My 2020 Thread

    Where the Spirit does not work with the hand, there is no art
    -- Leonardo da Vinci





  2. #22
    Senior Member
    WayneF's Avatar

    Re: Looking for advice for remote flash control

    Quote Originally Posted by BasilDane View Post
    I'm shooting models with a D750 handheld, and an SB-800 a few feet away with an umbrella mount.
    I've been using the built in CMD mode on the D750 the SB-800 flashes along with the camera, but it is not reliable. Sometimes the SB-800 doesn't see the light and doesn't trigger.

    Also, does this setup work with HSS?
    The Commander system does work with HSS, however, the internal flash does not.

    So this specifically means in the Commander menu, the group for the internal flash must be disabled, with Mode "---". If internal flash is enabled, it cannot allow HSS, because the internal flash cannot do it. Disabling it will still flash commands (before shutter opens), it just cannot contribute lighting if HSS. Groups A and B however will work remotely with HSS, assuming the remote flash has HSS.

    You said umbrellas. If indoors, HSS is the poorest and least suitable mode you could choose. No other way to say it. Regular speed light mode will run circles around HSS, in power and speed. 1/250 second shutter speed is more than enough indoors, and will keep out any normal indoor ambient. See HSS Auto FP - What is it?


    Assuming indoors, the commander should work OK with the umbrellas. The flash head rotates on the body, so on the umbrella stand, the body should be turned so that the red side infrared sensor (by battery door) is aimed at the commander in the camera. The head can still point into the umbrella, but the sensor should aim at the commander.

    I am puzzled as to "why" or "how", but if the Remote flashes are close to the commander, maybe within 4 or 5 feet, they appear to trigger by proximity. They can be behind or at the side of the commander and they still flash, when you could not imagine they would. But further needs line of sight.

    Normal portrait light has the Main light up to about 45 degrees around toward the side the subject (for the lighting). That should be plenty of angle so that flash (with body rotated) should be in clear unblocked plain line of sight of the Commander. The Fill light is back by the camera, very frontal, as close as possible to the lens axis, but so that the lens can still see around that umbrella. The Fill light should be about -1 EV lower than the Main light for lighting ratio. This is set in the Commander menu.

    See 45 degree Portrait Lighting Setup for this idea of Main and Fill light.

    Commander TTL (is TTL BL) seems to normally need about +1 EV compensation, which means there are two ways to do that.

    Flash Compensation +1 EV, Main group 0 EV and the Fill light -1 EV.

    Or Flash Compensation 0 EV, Main group +1 EV, and Fill 0 EV.

    These are identical settings. The +1 is instead "as required", whatever it needs, but I'd bet it will be ballpark.

    The SU-4 does NOT add TTL. SU-4 only works for flashes in Manual mode. However, what it does do (might conceivably do) is that the SU-4 unit can watch the triggering flash, which can be TTL, and it will trigger, and then quench off when the TTL trigger quits. If the flash is near maximum power level, the TTL preflash will trigger it and expend all of its energy too early, but at lower power levels, there will be some left for the final flash again. The Nikon flashes are sort of unique in that they can flash multiple times before recycle, if they have power left.

    So that is slightly like a flash exposure control, all flashes quench off at the same time. The camera TTL system does see all the light and meters that total sum and quits when total is sufficient, so that's good, however this has no control of the individual remote units power levels or distances, so the remote flashes are not metered individually. Level is a manual flash thing left up to the photographer.

    The SB-800s have SU-4 mode in them, you can play with it to see this, and it is a very good (very sensitive) optical remote trigger for manual flash, but as "TTL", it's an obsolete system today.

    So this is nothing like Commander TTL, where each flash (each flash group) is actually individually metered, and is controlled individually. Day and night different.
    Last edited by WayneF; 10-22-2017 at 09:43 PM.

  3. #23
    Senior Member

    Re: Looking for advice for remote flash control

    Little bit late to this thread, but for whatever it's worth:

    You might also look at the Cactus triggers. I've been pleased with the V5 and also with Midwest Photo, where I bought them. They're up to the V6 now which I haven't used.

    You could get a corded trigger. Nikon has the SC-29 for example, and there are some off-brand versions, like Vello. I know one of the Getty guys, who shoots top-shelf celebrity arrivals red carpet stuff, uses a Vello TTL cord. If your flash is inside an umbrella, a cord is less good than a radio trigger.




    Quote Originally Posted by BasilDane View Post
    I'm shooting models with a D750 handheld, and an SB-800 a few feet away with an umbrella mount.
    I've been using the built in CMD mode on the D750 the SB-800 flashes along with the camera, but it is not reliable. Sometimes the SB-800 doesn't see the light and doesn't trigger.

    Also, does this setup work with HSS?

    So, what should I do to improve with setup without breaking the bank? I've been reading about the SU-4, but I'm not sure that gets me anything.

    Any thoughts?

  4. #24
    Junior Member

    Re: Looking for advice for remote flash control

    Guys, I use SK 400 II strobe and use it along with Godox XT16 trigger without any issues. Also I have a Neewer flash (750 II), and the flash model does not support radio triggering. My doubt is that can I trigger the Neweer flash with some kind of receiver attached to it with Godox XT 16. If so, what will be apt for this, please guide me..

  5. #25
    Senior Member
    Bikerbrent's Avatar

    Re: Looking for advice for remote flash control

    Quote Originally Posted by Clickr View Post
    Guys, I use SK 400 II strobe and use it along with Godox XT16 trigger without any issues. Also I have a Neewer flash (750 II), and the flash model does not support radio triggering. My doubt is that can I trigger the Neweer flash with some kind of receiver attached to it with Godox XT 16. If so, what will be apt for this, please guide me..
    Clicker, you do realize you are posting to a thread from 2017! You might get better results if you start a new thread.
    Thanks/Like Clickr Thanks/liked this post
     
    Brent: Poway, CA
    D7200, D200, F100
    Tokina 12-24mm
    Nikon 18-200mm
    Tokina 28-70mm f2.6-2.8
    Nikon 80-200mm f2.8
    Sigma 150-600mm
    Nikon 50 AF f1.8
    Tokina 100mm f2.8 Macro
    Nikon SB800

  6. #26
    Junior Member

    Re: Looking for advice for remote flash control

    Sorry sir, I thought we need to post in appropriate section and posted on an old one as a follow thread. We will post a new one now..

  7. #27
    Staff
    Super Mod
    hark's Avatar

    Re: Looking for advice for remote flash control

    Quote Originally Posted by Clickr View Post
    Guys, I use SK 400 II strobe and use it along with Godox XT16 trigger without any issues. Also I have a Neewer flash (750 II), and the flash model does not support radio triggering. My doubt is that can I trigger the Neweer flash with some kind of receiver attached to it with Godox XT 16. If so, what will be apt for this, please guide me..
    I don't know if this Godox receiver will trigger your Neweer flash, but you could call B&H and ask. It is made to trigger Nikon brand flashes.

    https://www.bhphotovideo.com/c/produ...ontroller.html
    Thanks/Like Clickr Thanks/liked this post
     
    Cindy
    Flickr
    and My 2020 Thread

    Where the Spirit does not work with the hand, there is no art
    -- Leonardo da Vinci







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