"Flash Ahhhhh, Savior of the Universe!"
Welcome to the world of flash photography, it's a b1tch!
Well it can be.....or it can actually be quite easy it all depends on what you want to achieve.
Firstly, why are you using Manual mode? This is not a criticism, you aren't doing anything wrong and you can most certainly use Flash very, very effectively in Manual mode, but why are YOU using it?
Obviously you are doing something wrong the questions are, what are you doing wrong, how do you fix it and could you just as easily use something else?
Using Manual mode is great as it gives you total control over how the image is captured the only problem with it is that you need to know what you are doing and understanding manual Flash is a scary to say the least.
Okay so lets go through a couple of things.
Lets look at a few modes and see how this affects the flash.
Aperture & Shutter Priority Modes.
These modes are great if you are shooting in good light but still want to use flash because the camera will automatically meter for ambient light and then use fill flash to light the foreground. In poor light these modes are often the worse modes to use because the camera still meters for ambient light and this is the light that is very low and so you'll get a slow shutter speed. So, use these modes when the light is good and you just need fill flash.
Program Mode.
People often dismiss Program Mode thinking it's too automatic to be used by 'real' photographers. Rubbish. Program mode is the one mode that actually makes Flash dead simple. In bright light Program Mode will work like Aperture or Shutter Priority modes and assume that you want to use the flash as fill flash. It will meter for ambient light and adjust the power of the flash to fill in shadows on the foreground.
However, in low light Program Mode correctly assumes that you want the flash to completely light the foreground and adjusts the power of the flash accordingly.
Sounds perfect doesnt it, there must be a catch? Yes there is a catch. By using Program mode in low light you do run the risk of getting dark or even black backgrounds depending on how far away you are from your subject and how far your subject is from the background so it's not the miracle 'fix all' solution for all situations but when it works, it works perfectly.
Manual Mode.
Oooh the scary mode. Actually it's not that scary it's just easy to get things wrong as Flash photography can be just plain tricky. So how can you use Manual mode? Well you set the aperture, shutter and ISO to expose the BACKGROUND. Chuck your flash on Auto and half press the shutter. The flash will then tell you the flash coupling range which is basically the range that the flash will cover. What you then need to do is to make sure that your subject falls within that range. When you take the shot the flash's ETTL metering will alter the power of the flash to suit the distance to your subject resulting in a shot where the flash has correctly illuminated the foreground whilst your camera has correctly exposed the background and you have a correctly exposed shot. A common mistake people make is to think that they are adjusting the aperture and shutter speed to correctly expose the foreground. When they then take the shot the flash meters the foreground and fires but the camera was thinking that the light for the foreground was going to be a lot darker and you get either an over exposed shot or a shot with black background. Don't meter for the foreground, that's what the flash will do, meter for the background. How do you meter for the background? Well that can be a major pain if you are constantly moving and the light levels vary too but basically take a reading on what is behind your subject, dial in the settings for that, recompose and hey presto you've exposed for the background.
Well that's the theory anyway. Often all of this can go tits up because you want to bounce the flash off the ceiling, because your subject won't sit still for 2 seconds and keeps getting further and closer away, because your subject is too close when the flash fires, because your subject is too close to the background when the flash fires, the list goes on. How do you get over this? Practice. Experience of using flash in manual mode in a range of situations is invaluable as there will always be little tweaks you want to make.
But as I hinted at earlier, don't try and run before you can walk. Try Program Mode and see if that helps things for you, I'm not saying you should use it all the time, far from it, but don't feel you have to or should use manual mode all the time either. The camera has the tools on it to help you but you have to use them first.
I would strongly recommend making yourself a strong coffee, finding somewhere very quiet and away from any distractions and having a read of
this. It's long, it's complicated in places, it will do your head in but it does hold most of the answers.
HTH