Using an umbrella

Posted by admin on September 19th, 2007

A photographic umbrella (also know as a brolly) is exactly what it sounds like. It is the same basic shape as a typical household umbrella. Instead of repelling water though these are designed to either bounce, reflect or soften a light source.

In this post I’ll discuss the two basic umbrella types. Shoot through and bounce. I’ll briefly describe each type and how it is used.

The bounce umbrella:

With this umbrella type, you point the flash into the umbrella and the umbrella directs the light back towards the subject your pointing the umbrella at. The easiest way to determine where your umbrella is going to focus the light, is line up the metal umbrella shaft to the center point of where you want the light to hit on your subject.

White Bounce Umbrella:

There are different results from different colored umbrellas. Unfortunately I don’t have every type of umbrella to give you a visual. So I’ll briefly tell you what each color type does and the best application for it.

White bounce:

Out of all the colored bounce umbrella’s, this will produce the image w/ the least contrast and the softest light because the majority of hard light is eaten up in the white reflection material.

Best applications: Main lighting of portraits, lighting backgrounds.

Silver bounce:

This will produce an image w/ the most contrast and the hardest light (along with any other metallic type reflective material). Opposite of the white bounce, almost all the light is focused back to the subject w/ next to no light being ‘wasted’.

Best Applications: Rim lighting, keeping light focused without excessive “light spill”.

Gold Bounce:

This will give you the same amount of contrast in an image as a silver brolly. It will give a warmer cast to it though so this type of umbrella can be good for outdoor shots when you want to try and balance the flash to the sun.

Best Applications: Outdoor daytime light balancing. (A.K.A. fill lighting)

Grey bounce:

I honestly haven’t seen a grey used well in an application yet. I’m sure there’s a good reason out there to use them. If you know, please post a comment w/ a link or email me and I’ll update this post.

NOTE: I prefer gels to change color temp instead of brollys. This way you can carry and buy less. (I’ll link this note to gels when I make that post)

The shoot through umbrella:

This is a great portable way to really soften light from a flash and give you the softest possible light w/ using an umbrella. The material is usually white but it is very easy to change the color of the umbrella by just placing a gel on flash.

Side view of a shoot through umbrella:

What you should know about using umbrellas:

There is a common misconception that the larger the umbrella you use. The larger your relative light source is and the softer your shadows will be. This is only partially true. Another major contributor as to how large your relative light source is the amount of light that hits your umbrella. I will show you a few images to show you exactly what I mean.

NOTE: While I am only showing examples of the shoot through brolly for these images, the principal remains the same for any light diffuser/reflector. I will also only use one umbrella size so you can take these images at face value and don’t need to consider different sizes.

In the following image you see the back of a 43″ umbrella w/ a flash being shot into it (this is the same exact setup as the previous image shows).The zoom on the flash is at 85mm (telephoto). Notice how there is one concentrated area where the light is mostly focused? This is the real relative size of the light source that your using.

While the light spilling outside the area of this ‘hot spot’ is still helping light your subject. This excess light is barely noticeable and at this point in your lighting won’t make any difference.

In the following image you see the back of a umbrella w/ a flash being shot into it. The zoom on the flash is at 85mm (telephoto).

In the following image you see the back of a umbrella w/ a flash being shot into it. The zoom on the flash is at 24mm (wide angle). Notice how the relative size of the light source is much larger than the previous image?

What does this mean to you?

No matter how large your umbrella, if you don’t have a light source that can fill it, you are not utilizing the entire umbrella’s ability. So buying a 60″ umbrella won’t necessarily give you a 60″ light source.

More ways to control the size of your light:

As mentioned before, a bigger light source is not always better. I’ve shown you how to use the zoom on your flash to control the relative size of your light, another way to control the size of the light is to bring your umbrella closer to the umbrella. How you do this is slide the umbrella all the way into the umbrella adapter as far as you can make it go, so the flash is closer to the actual umbrella.

In the following image you see the back of a umbrella w/ a flash being shot into it. The zoom on the flash is at 85mm (telephoto) with the brolly as close to the flash as possible. This setup gives you a very small relative light source.

In this image you see an umbrella w/ a flash being shot into it. The zoom on the flash is at 24mm (telephoto) with the umbrella as close to the flash as possible.

With the combination of these two variables, you have broad control over how large your relative light source is and how to control it.

How does this help you as a photographer? Instead of bringing three different size umbrellas to a shoot. You can bring a large umbrella to a shoot and still have all the versatitlty of having smaller umbrellas on hand.

How to make your umbrella last twice as long.

I learned this trick from a blog posted by Rui M Leal from Portugal. He has gone into excruciating detail as to how to do this DIY so I won’t steal his thunder or re-invent the wheel. But I’ll give you the skinny on what it is and how it works for you.

Most common umbrella shafts are made with a hollow octagonal shaft. The inside diameter just happens to be a hair larger then the size of a standard #2 pencil.

All you do is measure the length you need to slide into the core of the umbrella shaft, cut the pencil to size, put a little glue on the pencil, then slid the pencil in! Now you have a solid core instead of a hollow one. You’ll find this especially useful when you clamp down an umbrella for the first time and see how the retaining screw on the umbrella adapter seems like it will sandwich your hollow umbrella shaft!

Here’s the link to the step by step tutorial

Here’s a shot of the end result on one of my umbrellas. I prefer using gorilla glue since the stuff is made on mars or some place where the glue Gods have got some serious skills.

I won’t go over soft boxes since most small flashes can’t throw enough light to make these a valid option. There are some small soft boxes on the market that you can use a strobe with. I don’t have any of these though. It will be a while before I post using studio lighting and those techniques.

Next post I will go over snoots and give you the skinny as to why they are so cool!

Setting up your lights on your hardware

Posted by admin on September 13th, 2007

So now you know what methods you can use to trigger a flash and how to make your camera make those flashes work. Now it’s time to set up your gear to some light stands.

After this post, you will know exactly what kind of gear you need to make sure you have a complete kit.

In the world of professional photography and big studio lighting, flash photography (in the sense we are discussing it as) doesn’t even exist. All the light stands are much more heavy duty and all take a variety of adapters. So don’t take this information as the end all of light stands. If you want to know more detailed info on any types of light stands or how they are used in a more commercial environment, please post a comment and I will go into more detail at your request.

Which lightstand should I pick?

Which light stand you choose is completely up to you. In this section, I’ll go over the basic outline of what makes stands different from one another.

I’ll go over some of the basic terms that you’ll see when looking at light stands and what they mean:

Damped (or air cushioned):

These light stands have an ‘air shock’ in them. What this means to you is that if you loosen one of the retaining nuts on the lightstand, it won’t come crashing down right away. It will slowly let itself down while you hear a small hiss of air. This addition is nice, but can be annoying if you are trying to break down your gear quickly. You have to wait for the air to release out of the chamber before you can completely collapse it.

Free Sliding:

This is the same exact type of stand w/o the ‘air shock’. When you loosen a sleeve it comes down with the quickness!

Stud size:

Most common sizes are 3/8″ and 5/8″. Which size you pick depends completely on what your use for it will be. For all lighting purposes mentioned in this blog, the 3/8″ stud will be fine. (As my photography knowledge base and ‘goodies’ grow, this may change.)

These are just the basic terms. This will be enough for you to make an educated decision on what type of stand you want to buy though.

Folded light stand w/ 3/8″ brass stud attached:

NOTE: You always want to make sure you can use your gear w/ new purchases down the road. If you have ambitions to build a big studio, make sure to get the 5/8″ stud. The studs are usually fixed to the light stand, so when you buy a 5/8″ stud, you are getting the more heavy duty light stand to go w/ it.

NOTE II: A light stand is exactly what it says it is. There are no clamps or brackets to attach anything to. This is why you need an umbrella adapter mentioned in the next section.

Umbrella adapters:

There are a few different types of umbrella adapters on the market. For all intents and purposes though they are the same plastic construction. There is a guy machining them and selling them on Ebay, but these are very hard to come by. I’d trade a piece of glass for three of them though. Since they are built like tanks and parallax corrected for proper light alignment (I’ll link to this term when I post that blog).

What this adapter does is connect your light stand to your umbrella and flash. In the image provided, you will see the bottom ‘port’ that clamps over the stud on the light stand. Then the port on the top will connect to your flash.

WARNING! All of the umbrella adapters I know if have metal shoes where the flash attaches. Make sure to put electrical tape on the ‘cold shoe’ (the metal piece where the flash attaches) , so that it does not short out your flash contacts and cause great sadness.

In the image below, you see a visual representation of what this looks like and it’s functionality.

Umbrella adapter:

With these two items and the flash trigger of your choice. You now have a basic light kit that you can use to light your photographs.

Putting the pieces together:

Here I will briefly discuss and show you how all these pieces fit together to make a light setup (or “light rig”)

A side by side view of a light stand and umbrella adapter:

A side by side view of a optical slave about to be attached to a flash:

A side by side view of a optical slave about to be attached to an umbrella adapter and flash:

F.Y.I…You don’t need a light stand to use your flash. You can get creative by using bungee cords to hang it from door knobs or branches. Use gaffers tape to tape a flash to the wall or ceiling. This Umbrella stand is just the first step in getting a basic light setup so when you show up to shoot something, you don’t look like a complete toolshed!

In the next post.

I’ll discuss umbrellas and how they can be used. Along w/ a killer tip to make your umbrella last twice as long for less than 25 cents!