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Using Multi-Flash Mode

Dave FIala • October 1, 2020

I have said it before. I always try to make sure that I get the most out of the equipment that I already own. I have been shooting a lot of flash lately and that got me thinking about a flash mode that I have not used for a long time. I wrote a little bit recently about using the FP mode AKA high-speed sync. Then I got to thinking that it has been a while since I did any shooting in the Multi-Flash mode.


Multi-Flash is another function that most of the newer add-on flashes have but one that I know some people overlook. It is another one of the flash modes that let us get creative while exploring new possibilities.

The benefit of the multi-flash mode is that it lets you fire a set number of flashes at a specific rate during a single exposure.


This rate of firing is referred to as Hertz.


Hertz is the rate or frequency of how often something happens. If something is occurring at 1 hertz it means that it is repeating once per second. So if we set a flash to fire at 6 hertz it means the flash is firing at a rate of 6 times per second. If we set the fire the flash at 12 hertz it means the flash is firing 12 times per second.

So if we set our flash to the Multi-Flash mode and want to fire the flash 6 times during a one-second exposure we would set the flash to fire 6 times at 6 hertz. If we want the flash to fire 6 times in ½ second we would change the setting to 12 hertz.


You can set your flash to fire a wide range of times at varying hertz. The maximum number of flash firings and hertz available is dependent on the limitations of your flash.

Once you determine how many times you want your flash to fire and at given hertz, you will need to calculate how long of a shutter speed you need to capture all of the times the flash will fire. If you are going to fire 8 flashes at 150 hertz you would need a 1/20th of a second for that sequence to complete. 


To calculate your shutter speed you take the number of flashes you want to fire divided by the hertz you are setting them to repeat at and that number converted to a fraction is your shutter speed.


Multi-Flash is usually set up on the flash. With some cameras, you may be able to set it up on the camera. When I was using Nikon I would set it on the flash. With my Fuji I can set it up on the flash or the camera as long as the flash is on the camera and the flash is turned on. When using the Godox 860 II that I just purchased it is easy. I put the flash on my camera and power it on. Then I go into the flash menu on the camera. I go to Flash Function Setting and normally that displays TTL. I rotate the main command dial on the camera to select Multi. Then on the same screen, I select the flash power. You can set however much power you think you want. With the Godox, I can select full power, half power, or down to 1/128th power. Then I select how many times I want the flash to fire and last I set the hertz. It might sound like a lot but once you see how to do it you can run through it in about 30 seconds. In the camera flash menu, I also check and make sure it is set to front curtain sync. It is easy as pie!


Some cameras will automatically set the flash to rear curtain sync when you set longer shutter speeds. If your camera does this you will need to go into the flash setting and set the flash to front curtain sync. I know this seems contradictory when shooting at longer shutter speeds but I have encountered this with my Fuji X-T2 and multi-flash does not work properly in rear curtain sync. This is easy to check. When using multi-flash your camera should be in the normal front curtain sync mode.


I recently purchased the Godox 860 II and this flash has quite a bit more power than the flash I had been using and the extra punch is coming in handy when experimenting with multi-flash. The Godox 860 II uses its rechargeable battery. I have been doing a lot of shooting that requires a lot of flash power and I have not had to recharge the battery yet. The Godox flash with this battery is a real powerhouse.


This flash is going to be just the ticket for me as I work on my next flash project.


Coming soon!


Rear Curtain Sync!

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By Dave Fiala August 30, 2023
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By Dave Fiala August 30, 2023
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By Dave Fiala August 30, 2023
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I was setting it up in the winter and I started to wonder if it was OK to have this instrument out in the cold weather. So I called the company and asked about it. They tell me that cold weather shouldn't be a problem. They use them in the cold all the time when they are testing them and using them at the factory. OK, I said I am just wondering because it was pretty cold last night. Then the guy at Meade asked how cold it was and I told him it was 2 above. Two above what, he asked? Zero, I told him. 2 Above zero, where are you? Wisconsin I told him. Then I asked where he was located? Costa Mesa, California he replies. Now, Costa Mesa never gets any colder than about 40 degrees. In Costa Mesa when it is 40 degrees these guys are wearing long underwear. In Wisconsin, when it is 40 degrees, the UPS guy is in shorts and sweating bullets. So I suppose this is as good a time as any to get the subject of this post which is. Is it safe to use my camera in the cold? The answer for the most part is yes. That being said, the next question is how cold, and for how long? The problems encountered when using cameras in the cold are condensation and battery life. Condensation can form in and on the camera and the front of the lens. So when you are out in the cold you have to watch the front of the lens and make sure that it stays clear of condensation or frost. When I had my telescope out in the winter I would use a hair drier to keep it clear Later I got a heater that wrapped around the hood and that would keep the front element clear. You can buy similar battery-operated heaters that attach to your lens hood. You can also use some of those hand warmers that you put inside your gloves. Just use some double-sided tape or Velcro tape to hold them in place. Just make sure to attach them to the outside of the hood so they don’t interfere with the light coming in. The next problem is battery power. Everyone knows that batteries do not like cold weather. When your car will not turn over, it is usually on the coldest day. This is not because some guy named Murphy thinks it's hilarious for you to be standing out in the cold. It is because the extreme cold is very hard on batteries. For some cameras, you can get a battery pack the plugs into your camera and has a cord the feeds to a battery that you have inside your coat. The battery stays warm and so the camera keeps working. Another option is to simply carry spare batteries inside your coat. This is my method and it works as long as I wear a warm enough coat! When the battery in my camera starts going dead I switch it out with one of the warm ones. Once the battery has warmed up inside my coat it may come back to life and I may be able to put it back in the camera and get some more shots out of it. Buy a spare battery here. But I make sure I have plenty of spare batteries so I can keep shooting and not miss those great shots. I have 3 spare batteries but the number of batteries you are going to carry is up to you. I carry more batteries than I have ever gone through on a shoot. But after all, that is how I planned it! The other things we need to do are make sure we have spare batteries for any remote controls, flashes, and flashlights that we take on our cold weather expeditions. Hand warmers and gloves. I have a couple of pairs of Promaster gloves that we sell in the store and I always leave one pair in my car just in case. It is too easy to think I have everything only to arrive on location and realize I forgot my gloves. Another thing about the extra gloves is if I am shooting with someone else and they forgot their gloves. Then I get to be the good guy and save the day!
What does a lens limit switch do?
By Dave Fiala August 30, 2023
I see that some lenses have a limit switch. What exactly does that do?  This switch is encountered on Macro and some telephoto lenses. These may have two or three distances that you can limit the focus to thereby providing a solution to the camera and lens searching for the focus. For example, when using a macro lens and we are photographing a bug at a close distance sometimes the lens will miss the focus. Without having the limit switch set to close range the lens will run all the way to infinity. Once it reaches the stop at infinity it will start on its way back to the closer distances to try and find the focus. If it misses again the lens will hit the close-range stop and start searching for focus again. If we have the limit switch set for the close distance it will not run all the way out to infinity because we have set the lens not to allow that long travel. The same is true if we are using a macro lens to shoot a head and shoulders portrait. If we are shooting someone at say, 12 feet away and the camera misses focus it might run the focus all the way back to the closest macro distance. Only when it hits the close distance stop of the lens will it start running back out to search for the focus. My Fujinon 80mm macro has a 3 position switch. The distance can be limited to, 0.24 to 0.5 meters or 0.5 meters to infinity, the 3rd setting is Full. Only if set to full will the lens run the full range of travel searching for focus. By setting the limit switch I can save time, battery power, and the aggravation of having the camera and lens searching for focus.
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