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View Full Version : constant vs. variable aperture amboyguevara 10-25-2006, 05:23 PM hi guys, what's the advantage of a constant aperture (f/2.8, f/1.8, etc) vs. a variable one (f/3.5-5.6, f/4-5.6, etc.). ? john_villavicencio 10-25-2006, 05:24 PM the biggest aperture stays constant all throughout the whole lens range... :) Rolando Avecilla 10-25-2006, 05:50 PM The advantage of having a constant aperture is that you will be able to use this aperture from the shortest to the longest focal lenght of the lens. This means constant amount of light is getting in the lens regardles of the focal length. This is specially beneficial at the long side of the lens. The f/2.8 allows you to use faster shutter speed. amboyguevara 10-26-2006, 02:04 AM that's what i gather.... thanks for the info guys...! :) |