So here is a 'curse' of expensive equipment -- I sent my Noctilux 0.95 back to Leica for a SECOND time for service. Thankfully it's still under warranty and the service doesn't cost me anything, but still.
The first time it was during my trip to New Mexico in February -- the lens was basically unsharp at around 10-12 feet, and I mean blurry. Plus, on one occasion, when I pulled the camera/lens out of the camera bag, the lens felt like it was all bound-up (focus). Strange, as the last time I pulled it out of the bag it was perfectly fine. The camera hadn't suffered any bumps, jostles, etc, as it basically sat on the back seat of the car while I was driving. After I got back from NM I sent it to Leica, and they made some adjustments to the mount and it was fine.
Fast-forward to two weeks ago in Minneapolis, and the lens 'bound-up' again. Same situation -- used it one time, perfectly fine. Pulled it out of my camera bag to use it again, lens focus is bound-up. I gradually worked it loose, but then it seemed like it developed a 'notch' in the focus between 8-10 feet. It still produced sharp images, but this 'notch' in the focus bugged me. So back to Leica it went.
Got an email last week from the service manager, who told me the following:
"I have just finished the repair to your lens. I replaced all 3 guides in the mount; which took care of the focusing issue. Will test the lens on Monday again; if all goes well we should be able to ship the lens then."
I asked him what would have caused this, and explained the Minneapolis scenario to him, and the fact that something similar happened in New Mexico earlier in the year. His response:
"None of us can say exactly what happens to a camera and lens when it is in a camera bag. The new Noctilux lens is very heavy to the front side. All three guides were replaced, and the lens works perfectly (focusing). I always tell people to carry the lens separate from the camera. Think of the lens as a lever mounted onto the camera. An physical force will be increased just like a crow bar. The longer the lens the more force will be exerted (weight is also a factor). I do understand your concerns, and there is no precise way to tell what happened or caused this. The lens gives great results on the MTF. Lens was tested again, and marked complete."
Has anyone who owns a Noctilux heard of such a thing? Carry the lens separate from the camera? What about just carrying the camera around your neck with the lens attached? Wouldn't that exert more physical force than it simply being attached to your camera in a padded camera bag (for the record, I use a Domke F803)? Or is there a certain way that it should be stored in a camera bag if it's attached to the camera? Lens pointed downwards? Sideways?
I use Nikon for most of my commercial work, and frequently I'll have a large heavy lens mounted to my D4 (24-70/2.8, 80-200/2.8 etc), and have never had any kind of issues like I've been having with this $11k lens (yes it's $11k not $9k). Plus, those lenses are put to extensive use - much more so than the Noctilux. Not that I'm hammering nails with it, but it seems to me that a lens such as this shouldn't have to be treated like some precious jewel, or am I being unreasonable?
Ah the curse of expensive equipment!