Venus 24mm F14 2x Macro Probe is a Manual Focus (MF) Macro Prime lens with 35mm FF max sensor coverage. When mounted on a 35mm FF sensor camera, it will give you an FF equivalent focal range of 24mm. With the max aperture of only f14 at 24mm, it is considered a slow lens.
Venus 24mm F14 2x Macro Probe is weather sealed which makes it an ideal lens for outdoor use, especially when coupled with a weather sealed camera body.