07-05-2017, 06:25 PM
Quote:Sure... however, thinking back over the last 10 to 15 years or so, I remember only one IS/VR failure on one of the lenses I owned or handled. Several AF failures during the same period, though.I have witnessed a blatant IS failure among my gear, once. The stabilizer on my old Canon 17-55/2.8 lens went out after just 2 months of usage (I bought the lens brand new) and started acting erratically. The lens was repaired for this failure (and another unrelated one) free of charge under warranty. Just FYI.
In other words: yes, ILIS adds to the complexity of a lens, but from my experience it isn't particularly prone to failure.
The potential decentering issue Klaus mentioned earlier remains of course.
That's how I meant it. Plus, on a DSLR, ILIS will help the AF do its job, too, especially with long focal lengths.