Originally posted by Marc Sabatella Lens with no electronics (M42, K/M lenses) are not particularly sensitive to weather. And lenses are easier to shield from the weather than the camera is. It's a myth tyhat you need sealed lenses. Sure, sealed lenses beat unsealed ones, but that doesn't mean a sealed body i of no value. I shoot a sealed body with unsealed lenses all the time. I'm just carfuly to protect the lens if it's one with electronics, and I tend to lean toward my M lenses where possible.
For once I tend to disagree with Marc.
I have two "normal" lenses with dust in them, alas.
And it shows, particularly with small apertures.
One cannot be too careful when travelling in dusty, windy places like north Africa.
- Bert