40mm

Sigma I-Series Lenses vs Sony G Compact Primes: No Losers Here

After my testing of the new Sony compact primes, I was able to spend some time with the competing set of primes from Sigma that were arguably the reason Sony created its lenses in the first place. Both sets are fun, compact, and extremely portable optics... but which should you buy?

5 Reasons 40mm is the Best Focal Length for a Do-It-All Prime Lens

Do you own and use a beloved 35mm or 50mm lens? Popular photography personality Kai Wong thinks you should consider trying out the middle ground between the two. He made this 11-minute video about why he thinks 40mm is actually the best focal length you can carry if you want a do-it-all prime lens.

Phase One Announces 40mm-80mm f/4–5.6 Lens for Its Digital 645 System

When it comes to medium format photography, prime lenses are the norm. The size, weight and quality of construction of lenses are all areas of constraint for medium format over DSLRs or mirrorless, and so zoom lenses are more of a rarity.

However, there are always impressive exceptions to the rule, which is exactly what Phase One has done with its second-ever zoom lens for the 645 digital medium format system.