Tag Archive for: flashduration

The problem with a global shutter that a lot of people will miss

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Yes, Sony revolutionised the photography market

Without any doubt one of the biggest steps forward has been released by Sony, and it’s called the A9III
But why is it this huge step forward?

One might think that when we talk about huge steps we talk about MegaPixels, ISO etc. But this is all just adding to something we already have. When I talk about a huge step forward I of course mean the new Global Shutter.

Global shutter?

So why is this global shutter thing such a big deal?
When you work with strobes you probably know that the term X-sync.
The X-sync is the maximum shutter speed you can can use without seeing an annoying black bar due to the second shutter curtain.
For most cameras with studio strobes if you stay at or below 1/125 you will have no problems at all, and in the studio this is actually no limit. Most studios are dark so the slower 1/125 shutterspeed is no problem.

However when we go outside things change.
When we work with strobes we now have to compete with the ambient light.
Take into account the limit of 1/125 and you quickly understand why a lot of those shots with loads of strobe power have a DOF from here to eternity 😀
In other words, outside we often have to shoot at f22 to get the balance we need due to that 1/125 limit.

Solutions

Luckily there are solutions.

  1. Make sure you don’t place your subject close to the top. This way you can shoot at 1/160 and sometimes a bit higher without noticing the black bar. It’s still there for the strobe but the ambient light will not show it and the subject is somewhere in the middle so it will still get the strobe. A quick fix but far from perfect due to the huge limitation for composition (but it’s a nice one if you have to and can for example crop later in Photoshop).
  2. A bit more serious are solutions like HSS, HS
    With HSS your strobe fires a lot of flashes during the exposure making sure the sensor is always lit by the strobe. This eats both power from the strobe but also from your batteries, it’s also a system that’s not 100% stable in output and can overheat a strobe pretty fast.
    HS is a system that uses the cut off and raise of the strobe, not to make it too difficult it uses a very slow strobe to get faster shutter speeds, same issue here is that it eats power.
  3. It doesn’t help with the shutterspeed but you can use ND filters to get a shallow DOF, although this can work great there are some disadvantages, first of all a good ND filter for use with strobes will be a pretty strong one, or a variable (I have the KF concept in my kit and really like that one) And with the stronger ND filters you will get into some problems with focussing speed. Also some ND filters will give you a light drop off in the corners.
  4. Leaf shutter lenses
    Leaf shutter lenses are awesome but expensive.
    The shutter is inside the lens and this means it breaks the limit of 1/125 with ease, there is still a limit (for example 1/1500) which in most cases however is more than enough, especially because most of these lenses are found in the Medium Format cameras.
  5. Cheap cameras
    Believe it or not but years ago I shot with a very affordable small Fuji camera which was able to shoot up to 1/1000 with strobes. This was a far cry from a professional camera, but I decided to include it to make the list complete.

So what’s the big deal with a global shutter?

In short….
There is no real limit anymore.
You would be able to shoot strobes up to 1/16000 or even 1/80000 when using Sony compatible strobes.
Sounds awesome right?
And it is, but there is one limit I have to tell you about that will prevent some nasty surprises.

The speed is important

The idea of shooting at 1/16000 will excite a lot of photographer but it could also be a huge disappointment, but that last part can be solved with a bit of technical information.

When we use our camera we all know that the shutterspeed will determine the “freezing power” of your camera.
The faster the shutterspeed the more action is frozen.
When we use strobes we often just look at the output. And in the past this is 100% understandable, most strobes are fast enough to freeze motion in the studio so we often don’t link shutter speeds to flash durations.

When we look at the specs of our strobes we do however see a value that links the two.
The t0.1 and t0.5 values. You might notice that those values are often mentioned in a range from very fast to slower,
Maybe you also found out that the way the motion is captured does vary depending on the power output of your strobes, especially with cheaper strobes it’s very possible that there are only a few power settings that will freeze the motion, where with the others there always is a slight blur.

When I look at the strobes I’ve worked with over the years there were strobes that topped out at 1/1000 and 1/60000.
As you can see this is a huge difference.
So what is the link with a global shutter?

Let’s shoot a mountain biker at 1/16000 with our strobe on full power.
Now let’s shoot the same mountain biker at 1/16000 with our strobe at 75% power.
I can almost predict that the 75% setting will be brighter.

So what’s going on?

You can shoot with the shutterspeed at 1/16000 and there will be no black bar in the frame, however the strobe has to be just as fast as the shutterspeed otherwise the shutterspeed will be cutting off the power of the strobe while it stills flashes.

This is very difficult to visualize because our eyes can’t see how fast a strobe fires, so we need a special tool for this.
To measure the flashduration of my strobes I’m using the Sekonic 858 lightmeter.
When I measure my Geekoto strobes I can clearly see that they are incredibly fast in the lower settings, as soon as I pass half power they are still fast enough to freeze any motion (1/5000+) but when I reach full power the flashduration gets a serious hit. Now this has nothing to do with the Geekoto strobes, but it’s all strobes and brands, it’s simply how it works.

So how does this fit in the global shutter story.
When you read the reviews and specs on the A9III you might expect that your strobe will behave the same as in the studio and this can lead to not getting the maximum performance out of your brand new camera.

The best way to make sure you get the maximum out of your system is to shoot a series of images on a white wall with the camera on a tripod. Don’t change anything on the camera itself but only change the output of the strobe. Do this for several shutter speeds and watch where the strobe starts to get dimmer and put a sticker on the strobe with those settings.

Why is this important?

When you use a lightmeter on location the meter has “no limits”, so it will give you the value of the full strobe, if the strobe has a flash duration of 1/800 or 1/16000 it doesn’t matter for the meter. Now that we know that the shutterspeed of the camera can cut off the strobe it’s also clear that when we are shooting above the “speed limit” of the strobe the value on the meter will not correspond with what you get in your photo.

Besides the trick with the white wall there is a solution for this, but it’s not cheap, but it will make it much easier.
When you use the Sekonic 858 there is a setting that doesn’t just meters the light but also the flashduration. This can be a very useful tool where you can not only find the setting with the fastest flashduration, but also to know how fast you can set your cameras shutterspeed.

A feature that was handy for reviews in the past has now become an essential tool to use your flash system to the max, and that’s a good thing, a really good thing. We can do amazing things with global shutters and flash, can’t wait to test it out myself.

 

To be clear, I have not shot with the A9III, this why there are no examples (I don’t fake examples), the technique however is universal.
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Hensel views and thoughts on a new system

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If you’ve been following my social media stream and youtube channel you probably already know that after many years being active as an ambassador for Elinchrom I’ve made the switch to Hensel. Let me first explain why this is.

In short, not a bad word about Elinchrom, they’ve been amazing and helped my career without any doubt and I still consider all of the dealers and head-office as close personal friends, and this will not change. Over the past year I’ve been in talks with Hensel USA and I feel that at the moment they are more in sync with what I want and need for both giving you guys a platform to learn and also the gear I use to create my work. But as you guys know I’m incredibly brand loyal and leaving a brand I’ve been in so close contact with from the start is very hard so it took us over a year to make the final decision but both Annewiek and I decided that Hensel is the company that first and foremost has the gear that I strongly believe will open up loads of creativity for photographers in almost every genre of photography, plus I’ve seen what’s coming and that made the switch A LOT easier to say it gently. Add to this the drive at Hensel to push education, help out with events and you immediately see why I’m so enthusiastic.

Photography is creating art, but also inspiration and education.
Hensel is a company that is willing to help me reach more people to help out with their photography, inspire and work with, in the end that’s the most important part for me as an educator, and I also believe it’s one of the most key elements in a brand, education and inspiration is key.

But that’s from my standpoint as an educator…. now why should YOU buy/switch or even look at Hensel. That’s of course the million dollar question. So I decided to make this blog post as a start in series of articles/reviews in both print and video. And don’t worry… it’s not an advertisement thingy, you guys know I never talk about gear that way because in essence there’s only one thing that counts…. how does the gear makes it easier for you to create your art and push new boundaries.

So here we go.
In this blog post I will give you some pointers on the system.
Do remember I’ve been shooting with Hensel for quite some time, one of my friends owns a studio that is 100% Hensel and I’ve taught some workshops there also the weeks before the switch I’ve worked with their gear, so it’s not something I write down after 2 workshops (heck I wouldn’t switch if I didn’t know the system well enough).

First off the mount
The mount is the best ever.
How often do you struggle with getting your heavy softbox on your strobe, or how often do you find out that it was not securely fastened with all the dangers connected (or not connected, pun intended). In the past I’ve worked a lot with Profoto gear and always loved the simplicity of their mount, but the Hensel mount ranks right up there. It’s a very simple and fast mount, you just pull a lever, put the modifier in and release the lever and well that’s it. And added VERY big advantage is that you can rotate every single modifier with ease. Especially great with striplights.

Here you can see the mount on an Integra, you can see the clamps and the lever on top, it’s really an incredibly easy and fast system. Especially when you change modifiers a lot (like me) this is a major strong point.

The reflectors
Reflectors are often regarded as the most basic modifiers but in essence they are very sophisticated. Did you know for example that choosing the right reflector outside can literally mean that you can twice as long on a battery pack?

Reflectors bundle the light and throw it on your subject.
If you look at my work you already know I love the high contrast look. You can achieve this with for example Fresnels, small softboxes with grids, but the best modifier for this look is for me personally the reflector (with or without grid). The cool thing about Hensel is that their reflectors are very prone to focussing the light right on the subject and are rather deep, meaning you get an amazing quality of light from them. Add to this the 14″ reflector which will give you a very focused beam of light outside plus a lot of extra power from your strobe and you see the reason why I actually ordered a selection of reflectors to play with.

The disadvantage of reflectors is that they are often, as people expect, a bit too harsh, too wide etc. The ones I got are actually the opposite and I think I’ll be using more reflectors than in the past for the simple reason they have an amazing focus and throw. It really fits my style perfectly. Add to this a nice selection of grids that is available for all of them and you can do whatever you want. (added bonus…. reflectors are actually often the cheapest modifiers, and therefore often overlooked by both the user and the manufacturer).

 

Grids
I love to have total light control and of the key elements for this is being able to steer the light. The best aid for this is called a grid or as some people like to call it a Honey Comb grid. Now in all honesty for most softboxes and reflectors you can get grids, but in a lot of cases these grids are not made for these modifiers and can cost you an arm and a leg plus extra work. For all the modifiers that I use Hensel actually already had grids so I could order them all from one location and they all fit the modifiers like a glove. Especially for softboxes and striplights this is a huge deal, but also for the 14″ reflector this was a delight.

Easy battery replacements
This might sound like a “Yeah… well what do you mean” kind of thing.
But try to replace a battery in the freezing cold or blistering heat, some battery systems are far from perfect. Now I won’t say that something is perfect but the Hensel comes pretty darn close. Take a look at the picture of the Porty for example. You just click and pull and it’s out and you can charge it in little over 2 hours. That sounds not that impressive but…. this a 1200W strobe which actually packs 300-350 pops on full power.

 

 

Remote
The remote is simple but works.
You can select 3 groups and with a small but easy to use switch you can select 1-2-3 or all.
Via the remote you can change the output of each strobe and turn the modelling light on or off plus trigger the strobe for a test. As far as I can see now the performance is very good but let’s be honest now a days a remote should indeed just work, the time of line of sight or shoot 10 and miss 2 should be way behind us.

This is probably the only thing I’m really gonna miss from the Elinchrom system, the new Skyport system is incredibly handy in the way that you can see all the strobes (if compatible) and you can easily change outputs. But changes are coming I’ve heard.

The thing that I do really like is the alternative remote control called the “wifi remote”.
This is very cool and would be great for people that do a lot of fixed setups where they have multiple strobes and want to be able to just switch between sets, let’s say only the back, only the front, a mix with sides etc. etc. you can store presets and call them back incredibly easily.

We actually mounted a small android tablet on a Tethertools holder and have the software running you can see all the strobes and changing settings is fast and easy. The cool thing is that due to two way communication if you change something on the remote you can see it also on the wifi remote. For my kind of work it’s cool but it’s not a necessity, I’ll have to see if I still use it after a few months, but again for other setups that use more fixed setups this is absolutely awesome.

Speed, speed, and did I already say speed…..
At the moment we have 3 expert 500D strobes in the studio and those are crazy fast, and I mean crazy fast. Yesterday we shot with some cameras that handle 14 frames per second and they didn’t even blink or missed shots and trust me that was not on a lower power setting. I’ve done similar tests on other systems and although for example the ELCs are real speed demons too they don’t have the short flash duration of the expert 500D.

Now of course you have the flash duration that the manufacturer tells you, but in all honesty you can just forget about those. The faster the flash duration the more stopping/freezing power and the crispier your shot so it’s important to really “hype” that speed.

In all honesty if your strobes are above 1/2500 of a second you’re fine. You can use it for freezing motion with hairs and jumps, but just don’t expect to have perfect frozen “everything” but you’re fine. I always held 1/2500 as the bare minimum for what I wanted. It gets really interesting when you break that 1/5000 barrier. Images get a certain crisp or micro contrast whatever you want to call it but it just looks different. And when you let a model move the motion is frozen perfectly.

Now comes the “not so fun” part.
Often manufacturers will claim insanely high flash durations but they don’t tell you that it only works at the lowest power setting… which well is absolutely useless because you can’t make a model jump and shoot her on f2.8 ISO400 there simply isn’t enough depth of field to have focus correctly. For a portrait it will work but a jump or movement will never be spot on when you don’t have some field of focus where the model can move in. So you need that stopping power on at least half and preferably even on full power. The last two workshops I’ve used my Sekonic 858 in the “metering speed mode” and I’ve actually never seen the Experts drop below 1/4000 of a second, but I’ve metered a top speed on 1/12000 (that’s insane) and that was not on the lowest setting but I believe somewhere at slightly above midpoint. Next week I’ll do a small test with the Sekonic and make a video on this.

Now you might say that this is only important when you freeze motion, but please read the first part again. It’s very hard to explain but you really see a difference between a really fast strobe and a slower one. The images just come out a bit more crisp. For me this is perhaps one of the points where I’m most enthusiastic about.

Build quality
For most people not that important, for some very important so I’m just gonna say it.
They’re build like fricking tanks. Same goes for the Porty and it’s heads, you just know it will be with you for years and if you drop it…. well don’t but if it happens… you can probably just continue shooting like nothing happens (no I’m not gonna try it). And to be fair in all these years I only dropped an Elinchrom a few times and they always continued working I only broke off a handle once. But I’ve seen some other brands that literally scattered in a million pieces after a very low drop.

But it’s not only the strobes. The softboxes, reflectors, grids etc. they all look like they will last years and years.
Giving the pricepoint of the modifiers I think this is a great selling point. It’s not cheap, but compared to the build quality of only slightly lowered priced alternatives there is a huge difference that would be well worth the investment.

Soft-boxes
I’ve mostly ordered the soft-boxes in the grand series because I just LOVE deep octas. And I think that with the 85 for location, 90 and 120 you can do almost anything when you combine them with grids. If you need bigger there’s also a 190 Grande, but I think I would hardly use that one myself, but if you’re into more softer and broad light that one would be absolutely awesome. Oh and there is one thing I do have to add concerning the soft-boxes. You probably know that most deep octas have a diffusion panel on the inside and outside right? Well these also have that of course but the inner diffusion panel is actually a translucent reflector which can actually help you out on location when you want to shoot with ambient light… just take out the diffuser and use it like you would normally use a reflector…. awesome idea.

I also ordered two 30-120 strips with grids by the way, just in case you wanted to know.

Beauty dish
One of the modifiers I use most is the beauty dish, it’s a sort of “it will always work” modifier.
I’ve always used the Elinchrom beautydish for a lot of my work and really liked it, but it was not one of the most “refined” modifiers. In essence it’s just a dish with a deflector and a one sized grid. I tried the larger beautydish a few times but never liked it and always returned to the smaller silver one.

The beauty dish from Hensel is something you really should check out. I was deeply impressed the first time I saw it.
It’s not just a dish with a deflector but it actually has some really well thought out light modifiers inside and the deflector part also has a holder for a gel which will come in incredibly handy because I love to use gels. Where some modifiers don’t differ that much the Beauty dish really is a HUGE step up for me.

I love modifiers that are versatile and this is a really well though out modifier.
But I can talk about it… let’s just see some images.
I actually ordered the silver one. There is also a grid that covers the complete dish by the way.
Want a lot of looks from one modifier?
Well here you go.

 

Compositing
Not really my thing “yet” for the simple reason I simply don’t take the time to spend hours extracting hairs. But if that would be easier…. well I would really like to play with it some times like for example with our cos-players, or what if you’re shooting children or working as a school or event photographer. Wouldn’t it be cool to just take a shot and not think about it and get a “perfect” cut out in Photoshop ready to placed on a backdrop (or even better, in the case of events, just do it automatically)?

Well enter… freemask
You do need strobes that are compatible, and you do need a special remote (and optional software, although you can also do it in Photoshop yourself). But when you invest in the remote and you already have compatible strobes (most Hensel gear is freemask compatible) it’s incredibly simple.

In short you use two groups.
One you just light your subject the way that you want.
The second one lights the backdrop.
Now when you shoot you shoot 2 frames (set camera on continues)
First the front will fire, and secondly the backdrop.
Now you have your model and a silhouette.
Do some magic and voila you have a perfect cut out.
Yep it’s that easy.

Again this is not a selling point for me, but I can imagine that if you’re indeed into shooting events, cos-players, schools, families etc. this is a HUGE money maker, but also for commercial photographers of course, no more money spend on extraction just shoot it and you’re done, well ok that sounds too easy of course, you still have to make sure the backdrop and subject fit together like shadows, lighting, composition, angle etc. but the extraction part went from “complicated and timely” to literally one shot.

Final thoughts
pffffff, I was planning on writing down just some thoughts and I ended up with a huge story, so sorry for this guys but I just wanted to be complete and while writing more and more ideas popped up, and I think that’s the incredibly cool thing about this, a brand that moves you, that literally pushes your buttons and gives you more ideas to get more creative that’s what in the end we all want. Take for example that freemask option, I started writing that it was not really for me, but while writing all these ideas popped up and now I also ordered a freemask remote… so let’s see what happens with that.

Now if this was the first time you heard about Hensel…. ok well…. I forgive you.
It’s a brand that has been on the market since 1963 and was the choice for many professional photographers for decades and watch my words you’ll hear a lot about them in the coming months, they have a very exciting strobe that is about to be released in the form of the Foris 400/800 which would be the perfect strobe for shooters that work both on location and in the studio and want to make absolutely no compromise on quality and easy of use or speed or…. well just check out the Foris here and that’s just the start, so keep your eyes out for updates.

Want to know more?
Of course you want.

I started a facebook group on https://www.facebook.com/groups/273169130099901/ for English
Or a Dutch page that is actually run by the Dutch distributor https://www.facebook.com/groups/442891952854692/

Find Hensel at : https://hensel.eu/en/
And the official Dutch distributor at : https://www.hensel-studiotechniek.nl/

If you have any questions… feel free to ask.
If you want me to test certain things just let me know.

Here are two BTS videos we shot from the first two workshops with Hensel
https://youtu.be/hgKUeWc4klM
https://youtu.be/R9nfyNBoKU4

And a small selection of the first series of photos shot with Hensel.