27.02.13 - Roses
It's been over a week since I posted a Daily shot in daylight, but yesterday was unbroken sunshine so how could I refuse? I rarely shoot cut flowers, prefering wildflowers out in nature, but the light in the conservatory was too good to waste. I liked the reflection in the glass too.
Thanks for the comments on my ghostly white shoes yesterday. When I do those I always get a lot of questions about how I did it, and people tend to think that they're really difficult, but they're really very easy. There is always a lottery element to long exposures, you never know quite what you're going to get, but with practice you can start to control the results a bit more.
Moving objects will always be blurred in long exposures obviously. They will disappear completely depending on the shutter speed and direction of their movement. Something moving across the shot will disappear at much slower shutter speeds than something moving towards/away, so if you want "ghosts" it is usually best to choose people moving towards/away. The feet are often the last things to disappear as they are momentarilly still when in contact with the ground. It is common to get "one legged people" because one leg will be in motion while the other is in contact with the ground.
The principles are very simple, but it sounds really complicated when you try to write it down. The best way to understand it is to play around yourself. You can use a tripod if that is what you're used to, or do as I do most of the time and use what objects there are to hand to stabilise the camera. Yesterday's shot was on a flat topped metal post. One thing I've noticed when I take people on guided photo walks is that they have the ISO set to "auto", and at night that adjusts upwards as high as it goes, and this works against long shutter speeds . It is best to set it for 100 or 200, then go into shutter priority. You control the shutter speed, the aperture will sort itself out. The best "people ghost" shots are between 1-3 seconds, traffic light streaks are best 3 seconds and upwards. But there are so many variables it is just best to play :)