Got my TS-E 17mm f/4L two days ago. Ran it through basic optical tests, it's excellent corner to corner. One minor issue I noticed - the tilt scale (the series of markings that show the degrees of +/- tilt) are 'off' on one side. There are tilt scales and an index mark on both sides of the lens. With the lens at zero tilt (based on the detent), on one side the tilt scale shows ~0.5° of tilt, while on the other side the scale shows zero as it should. So, the either the scale lines or the index mark on one side were painted a little off from where they should have been. The side that's incorrectly painted happens to be the side where the tilt adjustment knob is, so it's the side I'd more likely be looking at when adjusting tilt.

Obviously, it doesn't affect the optics. It doesn't even really affect the usage, since I don't ever tilt to a certain pre-defined setting and I don't record how much tilt was applied (at least, I've not done so with my TS-E 24L II), and even so I could just mentally adjust by 0.5°.

What do you think - is this something worth exchanging the lens over? I suppose it could affect resale value, assuming a buyer was astute enough to notice and cared about such things. But I'm not sure I'll ever sell it.

Appreciate your thoughts...