Blues Dude wrote:
I'm a landscape and macro/close-up photographer. I've got a Nikon DF and I shoot completely manual.
I'm trying to decide on an off-camera lighting unit: a small flash or a continuous bicolor LED unit.
For shooting indoors, a LED would have the edge. But how well will it work on outdoors subjects?
Your comments and suggestions, please.
I bought a small LED panel a couple of years ago, primarily for lighting near-foreground subjects in night sky photographs. It has 96 LEDs and the intensity can be varied with a small potentiometer. It works great for that (I usually turn it on for about 1 second when using ISOs around 4000. I'm learning to use it for other purposes, including using its cold shoe mount to attach it to my camera. It came with filters allowing it to produce light at a little bit more than 5000K, close to 4000K, and 3200K. While it is just right for my first intended application, I wish it were a little bit brighter for some of the other uses I'm investigating. It does have brackets on the top, bottom, and sides allowing additional units to be matrixed together, but they must still be individually controlled.
Other units are available with much broader color control and many more LEDs...up to 1,000 or more. One thing that you would want to watch out for is that some are (or have the option to be) battery powered. (Mine uses a commonly available Sony battery. It came with the battery and charger.)
I've played with the larger units (about 1,000 LEDs) at school They are a lot of fun to use, and it's like having a light box...since the source is fairly large, the light provides a very nice diffused look with no sharp shadows. They would be a big hassle to use outside for macro, though. Probably something bigger than mine and smaller then the 1,000 LED version would be a good balance.
I don't do much light-assisted macro photography, but could see a big advantage in not creating a flash that would startle the subject. I'd expect to have many more second and third opportunities with a LED panel. As for stopping motion, full-power flashess have a longer duration than most of us realize You would have to experiment and see if the additional light and not having a need to use a flash synch-limited shutter speed whether you could get the same or similar ability to stop motion from your shutter.
It seems that using LED panels for still photography is still a very new idea to many people. I've not found anyone close by who has used them, except at school. (Even there, the teacher who mostly uses them worked in the motion picture industry for several years.) They are not quite as bright as hot lights, but I've found them to be better from a color perspective than compact fluorescent lamps. You will probably have to decide if you are willing to adopt something new and not fully understood and do some experimenting to see how to best make it work.