The letter

One letter a week, in your inbox.

The week's signal, what the makers shipped and what the reviewers found, and the editor's note. No tracking, no ads, nothing else.

We keep your address, your language and the date you joined, nothing else. Every letter has a one-click unsubscribe link that deletes the record.

← Hot Shoe   Archive
FstoppersReviews

How f-Stops Work When You Change Focal Length

September 23

A 50mm at f/4 has a physically larger opening than an 18mm at f/1.8, yet the wider-angle lens is the faster of the two.

LensesEducationGear
Read at Fstoppers ↗

Related

More from Fstoppers on Hot Shoe.