I was a photo nut long before I started on headphones. Heck, I've spent more on my camera system then I made last year. I'm not sure which I love more, the Nikkor 400/f2.8 AF-S or the HD-600s
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What do you need a flash in day light for? |
There are a couple of reasons (in my opinion): shadow fill (contrast control), color temperature correction, added stop-action, and an artistic tool.
I'm not sure how much detail your photo class got into, but it all comes down to the difference between how film sees things and how we see things. Film has a much smaller range of what it considers pure white and pure black when compared to your eyes (7-10 stops for most print film and 5 stops for slides).
Say your subject has their back to the sun, so their entire face is in shadow. You do exactly what your meter says, develop your roll of black and white, and go to make a print. After doing your test strip, you realize that the correct exposure for the background is not the same as the subject. So, to have your cake and eat it too, you dodge the face and burn the background. This is fine and dandy, unless you've exceed the range of your film. This isn't an issue with print film, but is a serious concern when using slides. (For instance, even if I wanted more detail in the ospray picture below, there isn't any more detail to be had.) Alternatively, you could have used a flash to throw enough light on your subject so their exposure is the same as the background's. Some camera/flash combo's will do this automatically, otherwise you have to dust-off an old incident-light meter (don't worry, you can wait a couple years for this one).
Another concern with your subject in the shadows, in-direct sunlight is a different color than direct sunlight. So, a flash can be used to clean up the blue-cast from the in-direct sunlight (a flash would have easily removed the blue cast on the osprey). But, so long as you stick with black and white, you will never have to worry.
Although architectual photography has little use for it, Russ showed some amazing examples of how flash can be used to stop things in motion. Something I haven't gotten into, but I'm sure I will one of these days.
Finally, there is virtually no end to what you can do with a flash on a sync. cord and a bit of imagination.