Camera Lenses: “Fast” vs. “Slow”. Does lens “speed” really matter that…, by Chuck Haacker, Counter Arts

A lens’s adjustable aperture — its iris diaphragm — controls the amount of light coming through the lens over time (controlled by the shutter). The wider its maximum opening, the “faster” any lens is…

What camera is better than the P1000? - Quora

Absolutism in Photography — Primes v. Zooms, by Chuck Haacker, Counter Arts

This is Why I Always Use Autofocus, by Chuck Haacker, Counter Arts

What is the difference between a fast and a slow lens? - Quora

The Benton Museum of Art at Pomona College - Right: The whereabouts of Ernesto Guevara remain a mystery. Left: Castro announced that Guevara finished his work in Cuba six months ago.

Why does my camera choose slow shutter speed when in aperture priority? It choose between 1 and 1/8s and I would like to have 1/125 at least. How do I set it

Can a slower lens perform as well as a fast lens at the same f-stop? - Quora

Is Canon's 70-200mm f2.8 lens worth $1K more than the f4 version? - Quora

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What is the difference between a fast and a slow lens? - Quora

Light Emitting Diodes (LEDs) in Photography, by Chuck Haacker

Old Photographers Never Die — They Just Lose Their Eyesight, by Chuck Haacker, Counter Arts

Why do so many standard lenses for digital camera systems have f/3.5-5.6? - Quora

Monopods; Don't Leave Home Without Yours!, by Chuck Haacker, Counter Arts