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…

How to experimentally measure the effects of diffraction in my photographs and thus identify the optimal aperture for my camera lens - Quora

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

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

What are the pros and cons of a kit lens in a camera? - Quora

Follow the Light. There is no photography without it., by Chuck Haacker, Counter Arts

The Secret Language of Photography, by Chuck Haacker, Counter Arts

How to easily tell if a camera performs well in low light? Is there a specification I should look for - Quora

The Secret Language of Photography, by Chuck Haacker, Counter Arts

Photographers, Synchronize Your Cameras, by Chuck Haacker, Counter Arts

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

Why Camera Gear Matters — Maybe.. Dietrich Ruehlmann writes that camera…, by Chuck Haacker, Counter Arts

So is a Smartphone a Real Camera?, by Chuck Haacker, Counter Arts