diffraction

Diffraction Explained: Why Your Lens is Worse at f/22 than f/8

It's common knowledge that most lenses are at their best (i.e. sharpest) between f/5.6 and f/8, depending on the lens. But why is that? Why does stopping down further actually make the image softer? This is what YouTuber ZY Productions explains in the video above.

Improve Your Astrophotography Focus With a Bahtinov Mask

Finding razor-sharp focus when shooting astrophotography can be hard – stars appear as point light sources, and there are no detailed surfaces to aid the eye in achieving focus. The Bahtinov Mask is a widely used tool that cleverly uses diffraction as a focusing aid.

Overcoming My Photo Entekaphobia: The Fear of Shooting at f/11

Entekaphobia is fear of the number 11. I’m a resolution fanatic. I test every new lens for resolution. For personal use, I’ll choose the lens with higher resolution over the one with creamy bokeh every time. When choosing a camera, I have a (yes, I’m ashamed to admit it, but it’s true) strong tendency to want the most megapixels. I’m a resoholic.

Being a resoholic, I’ve always been somewhat fanatical about apertures. Whenever possible I shoot with the lens stopped down at least one stop to wring the maximum sharpness out of my lens. But I’m always careful not to stop down too far because I was taught, soon after I picked up a camera, that if you stopped down too far the dreaded diffraction softening would kick in.

Lens Diffraction and How It Affects Your Photos

Really more useful for landscape and macro photographers who are going to be shooting through very small apertures (f/22 and above), this video from FStoppers explains what diffraction is and how it can affect your shots. The trade off, as they explain in the video, is between a large depth of field and a sharp image; and the trick is to find your "sweet-spot."