Learn the easy way to inspect the aperture diaphragm in your Canon EF Series SLR camera lens. Anyone who has ever been shopping for
a used lens for their SLR camera has heard or read the phrase, "The
aperture blades are clean, oil-free and snappy". This is very
important information to know about a lens that you are thinking about
purchasing. Unfortunately, many novice or "first time" photo gear
sellers who use these words actually have no idea what they really
mean. This very common phrase just "sounds good" to them and it
seems to be pretty important, so they parrot those words in the
description of the lens that they have up for sale. I recommend that
you make certain that the seller actually understands the meaning of
this phrase and can confirm that it accurately describes the actual
lens that they are offering for sale.To
understand the meaning of the phrase "clean, oil-free and snappy", you
should know a little bit about the aperture diaphragm and how it
functions. I am not going to teach a
Orignal From: How To Inspect Canon EOS Camera EF Lens Aperture Blades
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