flashes are mainly used for low light situations. you will know you are in a low light situation when you have to use a slow shutter speed which can cause blurry photos due to camera shake.
another use is as fill flash on sunny days. this can help reduce shadows and/or brighten a subject a bit.
I tried to shoot at this lounge/bar with my 50mm 1.4 and it couldnt focus at all because it was too dark and i dont like the results with the built in flash..
I tried to shoot at this lounge/bar with my 50mm 1.4 and it couldnt focus at all because it was too dark and i dont like the results with the built in flash..
But I rock 3 flash units with radio triggers. I actually just did an off camera lighting workshop for beginners today.
One thing I did was put the model infront of a window. Without the flash you get a good exposure of outside and a model's silhouette or a blown out background and a properly exposed model. Metering for a correct background and setting the flash gives you a perfect background and a perfect model.
I use mine all the time, I'm using 2 flashes usually off camera. You can get great effects using it to get cool looking contrast. I also use it for BMX photography to get rid of shadows on the rider and make them stick out more.