Thread: 1/2 F stop
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Old 21-12-2011, 05:58 AM
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troypiggo (Troy)
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Can you tell us more about the lenses? What brands? What focal lengths? Aside from one lens being slightly faster than the other in terms of f-stops, could be over-riding factors that would tip you the other way such as optical quality.

Most lenses wide open, ie at those maximum apertures, are not the sharpest and/or have more noticeable chromatic aberrations. They improve drastically when stopped down a little. Varies from lens to lens, but each does have a sweet spot. So after stopping each of those down a touch to some sweet spot, might be f/2.8, might be f/4, if it were me I'd be considering the overall quality difference of the lenses over the 1/2 stop maximum available aperture since it may not even be used at that.
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