Focus Issue on New Canon 135mm f2 L ?

Keith Z Leonard wrote:

xroxer wrote:

I agree the "you suck" attitude is prevalent here. There are some very helpful posters though. I've learned a lot so far.

I'm still concerned about my 135L though. I think I will bring it to Canon to check out.

While at times that attitude does happen here, this thread really isn't bad, I think some over-sensitivity is happening. A lot of people post here about issues without knowing that the equipment is ok, and they are just missing some technical part of the technique. Some have very legit issues with equipment. On average though we see probably 10 people claiming problems with equipment that they don't know how to use for every 1 person with an actual problem.

Having said that, people here make suggestions in an attempt to exhaust the easiest to fix possibilities. If OP is of the opinion that he is a perfect photographer and clearly this is an equipment issue, why even post here looking for help? Just call Canon. The suggestion to put it on a tripod and shoot a stationary target is a good one, that way you can be sure it's a lens problem and doing that test at different distances will give you information to tell Canon. They might ask you to send the lens and the body in for calibration.

Of course with primes you often need micro-focus adjustment, which would require that you.........put the camera on a tripod and photograph a stationary target! My 135L didn't need any adjustment at all, but my 85mm and 50mm primes did.

To me this tread seems about someone who is frustrated (understandable) and over-reacting/making assumptions that the people replying are being insulting when they are trying to be helpful.

Another bit of insight is that I don't get reliable sharp images at 1/250 with my 135L on 35mm, and certainly wouldn't on crop, but in your examples the bottom image is certainly front focused, so that's probably not an issue here.

A simple explanation would've been sufficient.  However, read a few of the replies and you'll see, adding a tripod to the equation was not the implication.  I'm not being over-sensitive, I'm annoyed at those who post holier-than-thou replies, or make insinuations that a person is ignorant, or on some level beneath them.

I never once stated or implied that I was a perfect photographer and that I suspect my gear has a problem.  Not even close.  I expressed a concern over a brand new lens that is exhibiting a focus issue I've not seen on my other lenses.  Now, that being said, with the exception of my 85mm, all my other lenses have been zooms. So, if there is a technical issue that I need to learn or be aware of with prime lenses of this nature, then that's why came for advice.  I have recently decided to switch to all primes so I get there will be a learning curve to some degree.  I just thought this would be a good place to get it all sorted.  Again, I seem to have been mistaken.  Thank you for your input.  I will look into micro-focus adjustments.