The Canon EF 24-105mm f/4L IS USM has a tendency for zoom creep, where the lens extends when pointed down or up.

A common issue with the lens is a fragile ribbon cable, which can break and cause errors, often requiring third-party repair options.

Some repairs, like a broken front element, can be challenging due to the lens's construction, and often require professional intervention.

Autofocus issues can arise after extensive use, particularly when used for interior shots over many years.

Owners report successful use with Canon R6 and R5 cameras, citing satisfaction with image quality despite the lens's age.

Users find the lens performs well on crop sensor cameras like the Canon 70D, although the 24mm wide end feels narrow.

The lens is considered a bargain at around $350 for its versatility and build quality, especially when compared to prices of newer models.

Many users find the lens affordable on the second-hand market, especially given its durability and versatility.

While the lens is versatile, the Sigma 24-105 is noted to be significantly sharper, and the Tamron 24-70 f/2.8 SP is preferred for low-light conditions.

The lens is praised for video work due to its outstanding image stabilization, which allows for handheld video shooting.

The lens is ideal for street photography on crop sensors, offering a compelling focal length range equivalent to 35-160mm.

Owners report the lens is built like a tank, surviving harsh conditions and accidental drops without significant damage.