Diffraction f/Entekaphobia

Started Feb 5, 2014 | Discussions thread
OP Robin Casady Forum Pro • Posts: 12,898
Re: Diffraction f/Entekaphobia

olyflyer wrote:

Robin Casady wrote:

Interesting article on diffraction by Roger Cicala.

For those with f/entekaphobia (fear of f/11) it is interesting to note that f/11 was generally as sharp or sharper than f/4 and f/16 compared favorably to f/2.8. He tested with two Zeiss 50mm lenses and a Nikon 50mm f/1.4G.

I think those tests state the obvious. At least it is obvious to anyone who dare using smaller than f/5.6. Maybe f/5.6 is the most optimal in the majority of cases, but even that has been the obvious ever since I started with photography using SLRs in 1970.

Anyway, do you really think there are people who think a lens (any lens) can be better wide open than a bit stopped down? Is there really anyone who believes that lens would perform better wide open at f/1.4 or f/2.8 than stopped down to f/11 or f/16?

From past threads on diffraction I think there are people who are comfortable shooting at f/1.4 to f/2.8 but have entekaphobia. Roger is a self-admitted entekaphobe.

Personally, I've been hesitant to shoot at f/16, but then I am hesitant to shoot at f/4 and wider as well.

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Robin Casady
"Get your facts first, then you can distort them as you please."
—Mark Twain

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