A versatile multi purpose lens with a focal length of 525mm 35mm equivalency and f18 aperture its good for snapshots portraits night shots and more features a versatile multi purpose lens with a focal length of 525mm 35mm equivalency and f18 aperture its good for snapshots portraits night shots and more compact and easy to carry lightweight and only around 45mm long its an ideal second lens for when youre out and about crisper cleaner results new optical design red