Clearly seen either one will help you make a good picture.
If you’re a beginner, don’t be tricked by f-stops or ratios; remember to see what you’re interested in – and then get enough light on it to make a picture. Don’t loose your muse, before you start. Gaining complex lighting does not help you gain a better picture.
Here I used an Alien Bee 800 set to minimum power with 30 degree grid spot on the standard 7 inch reflector. Roughly 6 feet from the model. You can see the falloff starting at about the hips.
Canon 1d – 50mm lens – f2.8
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