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Fill-in flash...

 

...why don’t we use it more?

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Flash photography has always been something that I have struggled with. I bought a top of the range canon 580 ex11 flashgun some time ago, but instead of persevering with it when I failed to get the shots that I wanted, I abandoned it to the back of the cupboard and carried on struggling.

The recent dull weather gave me an excuse to dig it out again and this time I stuck with it until I started to get some decent shots. I can’t believe that I ignored such a useful piece of kit for so long.

These first two shots show  pretty well where I have progressed to, while the three below demonstrate some of the problems that I had to overcome in order to get this far. I wouldn’t say I have got it sorted, there is still a lot to try, but I do feel that they demonstrate the potential of using a little fill-in flash.

I initially started using it to try and make up for the dismal light we have been having lately and to gain more speed, but for wildlife photography, it looks as though it cannot easily solve that problem without causing others.

In particular too much flash gives an artificial feel to the image. In the blackbird shot below, that manifests itself as a shiny edge to the feathers making them look as though they are tinged with silver.

The more flash you add to the image the harsher those shiny reflections become and unfortunately the background also becomes a lot darker; ultimately giving the impression that the images were recorded at night.

By setting the camera to expose the background correctly and just using the flash to fill in the shadows and to enhance detail and colours it all works very well. The moment that you let the flash take over, it  starts to look very artificial to my mind. I seem to have reached a stage where the flash is little use for the problem I was hoping it would solve solve, namely that of too little natural light.

This problem becomes very severe as you add light to freeze the action which is why such flight shots often have black backgrounds. The only solution I can see if I want to freeze the action with flash and retain some background detail would be to light it separately with slave flashguns. I would imagine that would also look very artificial unless I can soften the light somehow; but that is for another day. Before I go down that route I plan to try and get to grips with a flash extender so that I can take this technique out into the field where the subjects are less obliging.

Even when you have the exposure correct there is very often a harsh spot light in the subjects eye. It can be reduced by using a diffuser, but then it may become necessary to re-adjust the flash compensation setting. I have been cloning it out in photoshop taking care only to remove that pinprick of light and to not affect the natural highlight that is so necessary to give the picture some life. It takes but a moment and is a very necessary finishing touch to images shot with a flashgun.

At the minimum focussing distance or thereabouts, I have been using the camera on its Av setting and dialling in -1 2/3 flash exposure compensation on the flashgun. With the flashgun set to first curtain, high speed synch, zoom to 105mm and the camera function set to E-TTL, results have proved very acceptable as I feel the two shots at the top of the page and these two below demonstrate. For these shots I have had the flashgun mounted on a separate tripod and placed directly above (about a foot) the lens so that I can turn the camera to take portrait format images. Next project is a mounting bracket that supports the flashgun directly on the gimbal and far enough forward to be outside a hide. The greenfinch image gives a good idea of the detail that the flash can show well even in the dullest of plumage on a miserable day.

In the past I have really struggled shooting into the light with harsh shadows an unavoidable side-effect of a backlit shot. Now as the female bullfinch image shows, it is possible to have the best of both worlds, by reducing the contrast between the highlights and the shadows.

 

Mouse-over pictures with magnifying glass symbol alongside to see 1000 pixel version

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