When it comes to low-light performance, the Olympus 12-40mm f/2.8 PRO lens does a pretty solid job. Its consistent f/2.8 aperture throughout the zoom range lets in more light, which is handy when you're shooting in dim environments.
So, whether you're snapping photos at an indoor event or capturing twilight landscapes, you can keep your exposure balanced without cranking up the ISO too much.
Now, the lens doesn't have Optical Image Stabilization (OIS) built-in, but that's because it's meant to work alongside Olympus cameras, which usually have stabilization built into the body.
That means if you're pairing it with an Olympus camera, they'll work together nicely to help keep things steady. But if you're using it on a camera without that in-body stabilization, like some Panasonic models, you might find a tripod helpful in low light to avoid shaky shots.
As for how it's built, this lens is tough and weather-sealed. It's dust- and splash-proof, so you're good to go even if the weather isn't.
This is especially great if you're into outdoor photography and don't want to worry about a bit of rain or dust ruining your plans.
Another nice touch is its ability to focus closely, around 0.2 meters. It's not a macro lens, but you can still get fairly close to things like capturing the details of a wedding ring or small event objects.
Overall, the Olympus 12-40mm f/2.8 PRO lens does a great job with low-light photography thanks to its wide aperture.
While it doesn't have built-in stabilization, that's covered if you're using it with an Olympus camera. Its sturdy design benefits those often shooting in tougher conditions, making it a reliable option for varied shooting situations.