I have an old 2x adapter or doubler for my canon 7d. It went to an old 35mm camera of my dads. If I use it with my camera and lenses, will it affect the clarity, f stop, depth of field, or anything aside from the zoom?
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While the teleconverter will bring things closer, it will degrade the clarity and resolution. You will lose two f-stops. ie: A 2.8 lens becomes a 5.6 lens, an f4 lens becomes an f8. Your auto-focus will slow way down, if it works at all. I'm not sure what effect it has on the depth of field.
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