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Message: <blockquote data-quote="yauman" data-source="post: 368287" data-attributes="member: 15418">If you are just doing youtube videos, I would NOT recommend using a sophisticated camera like the D5100.  There are cheap cameras made for doing web videos like this <a href="http://www.amazon.com/Logitech-Webcam-Widescreen-Calling-Recording/dp/B006JH8T3S" target="_blank">Logitech webcam.</a>  These cameras are made for what you are doing - they all have very small aperture, huge depth of field and make small images with high sensitivity sensors - just for the web/youtube.Since you already started with the Nikon let's see how you continue.The Depth of Field is set by the aperture but it's not a fixed thing - it depends on the focal length of the lens you are using and how far the subject is from the camera.  The long the focal length - the shallower DOF ie if you are using a 200mm lens, you'll get a shallower DOF than a 35mm lens for the same aperture setting.  Also, using the same focal length and the same aperture, you'll get a shallower DOF if you are 2 feet from the camera than if you are 20 feet.So, the answer is use the smallest aperture you can get away with for the lighting condition and lens you are using.  Since you are videoing with a modern DSLR, make use of the fact that you can crank up the ISO and with the video being used on Youtube, it can be quite small so ISO grains won't show up. Try this - assuming that you are using a 50mm and sitting about 5-6 ft away from the camera.  Set the aperture to F8 or even F11. Set fps to as low as you can without motion blur or jerky looking video. Light yourself as bright as you can now crank up the ISO to whatever is required to get a good looking well exposed video. You just have to do it trial and error method with the ISO and FPS setting to get the right exposure.  At F11 with a 50mm lens your face should be in focus even if you move a foot or so either way.Have fun!</blockquote>

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