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If by 'constant light' you mean 'natural light' - IE Sunshine, then in some ways it can be superior - BUT you are very much at the mercy of what nature decides the light will be at any given moment.
If, however, you mean constant artificial light, then I have to disagree.
If we exclude high-end movie type lighting (costing tens of thousands), then continuous light comes in a few varieties, all of which have their disadvantages;
1) Traditional 'hot lights' - halogen / tungsten filament bulbs
Get very hot, very quickly, limited (often zero) power adjustment.
2) Compact Fluorescent
Relatively low power, limited (often zero) power adjustment, get warm, but not as hot as filament bulbs. May have incomplete colour spectrum
3) LED
Lightweight, but very likely to have a limited colour spectrum.
The limited colour spectrum of CFL and LED lights is a significant drawback - and it's not something that can be corrected in PP.
You can get decent flash units for under £100, mains powered studio strobes start at ~£100 or so for a reasonable unit - not cheap, but also not particularly expensive in photographic terms.
These have full colour spectrum, don't have the heat problem, and allow you to adjust the power - essential if you have multiple light sources, as one needs to be the main (key) light, and all the others are secondary (fill) lights.
Note that the cheap option is to have 1 light and a reflector (which will automatically be less bright than the main light it's reflecting).
Mains powers strobes also have a 'modeling light' - which you can turn on to help visualise the light on your subject (as it's positioned at the same point as the flash tube) - these are typically 150-250W halogen bulbs, so do get hot, but you only use for short periods then turn off, so heat is less of an issue. |
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