
Ewwwww![]()
Lens on all the time.
On top of the reduction in exposure to the environment and particulates, it's always useful to have a lens on if you need that rapid '5 second whip it out of a bag and fire away' moment when you see a shot coming into view quickly.
Sorry but that's a false argument, for two reasons...
The first, and most likely, is that if you see the shot and the camera is in your bag, then you've probably already missed it.
The second ,is that if you have time to get the camera out, you also have time to put a lens on, and more to the point, the correct lens.
I'm impressed. I rarely know which lens I'm going to use until I get on location and make a decision based on subject, lighting etc.
...and when you take your camera out of the bag with the wrong lens on it.....