Originally posted by biz-engineer Any suggestion how to do it easily/quickly ?
Here's how I do it to minimize the amount of time the inside of the DSLR body is exposed.
First, I lay the camera down on the ground on its back. I push the button holding the lens in and rotate the lens until it's loose and ready to be removed, but I don't remove it yet.
Next, I take the new lens and remove the back lens cap. I bring it up close to the old lens and rotate it until the little dot is in position.
Then, I use one hand to remove the old lens while I slide the new lens on, as quickly as I can. I rotate it into place until it goes click.
Finally, I put the back lens cap on the old lens and put it away.
It sounds like a lot of steps, but I can actually pull off the whole maneuver quite efficiently, once I have everything set up. Not nearly as fast as the guy in the Pentax video, though.