I was lured into the desire for a 35mm equivalent field of view lens with a bright F1.4 aperture. Obviously on a crop the natural choice for this is the 24mm F1.4L II. Well after going through 3 copies that each weren't perfect in any way focus wise, I reached the last one, which seemed at least decent.
I thought...what the hell, I'll just send it to Canon and they'll get it all tuned up for me and I'll be good to go....THIS IS THE MISTAKE.
In order to remotely hit focus most of the time, I needed +18MA. So I sent it in saying this, with the body. It comes back...no change. Frustrated, I send it back on Canon's dime....it comes back...+10MA for the outer focus points, +15 for center...can't focus on some objects that really shouldn't be that hard.
So I send it in again(third time) and it comes back...fairly decent. 0MA needed. The only problem is that the center focus point is absolutely horrid with some targets. It focuses on a random area of contrast within the scene...far far far from the actual target(trust me on this one...I know the points are larger than they appear). I keep it for a few weeks like this. Then I take a walk outside one day with it and I'm frustrated as it misses EASY targets.
So I call Canon and send it in a fourth time. This time I even try to raise a bit of hell and send off an e-mail explaining the trouble I had gone through and that I just wanted a lens that was reliable. I get contacted back assuring me that all my repair history would be forwarded to the NJ service center. I am hopeful something will happen this time...or at least maybe they would look for a replacement that worked(this lens has a history of AF problems from the factory). So the typical thing happens, it spends a few days at Canon and suddenly its shipped back....no word on if anything was wrong.
Well I picked it up and guess what...its back to completely random focus. Different targets behave completely differently...outer points sometimes work better than the center point...center point sometimes misses black and white text....focus behavior changes seemingly dependent on subject and distance(MA can't fix this).
So I call Canon and ask for a supervisor. I explain to the gentleman that I have given Canon four chances to repair this lens and that I want to know what Canon can do for me....and what's the answer? You guessed it...I can send the lens to the Canon Factory Service Center. When I ask what help that will be given that I have given them four cracks at it...he says "we have no three strikes you're out policy"....I guess its four strikes for Canon.
I had previously contacted BHphoto to ask if they would take it back...its spent more time in the hands of Canon than my own and its less than 3 months since I bought it. They responded that once it went to repair there was nothing they could do.
So now I am SOL with a lens that costs $1700. Canon can't fix it, my credit card can't help, BHphoto customer service can't help. I'm stuck with a MF lens. If I wanted a MF lens I would have bought a Zeiss.
Tomorrow I plan on calling BHphoto and pleading with them to help me. I will instantly plop down money for a trade for a 70-300L and Siggy 30mm if that makes any difference to them. If they can't help me...I guess I'm sending Canon my lens for the FIFTH time.
Yes, I do know how to focus, my 100mm, 17-55mm and previously owned 35L were/are all great. Canon's 24mm F1.4L II is a piece of garbage. The only thing I have heard is that people sometimes remedy the problem by getting a 5D of some sort...why this matters I have no idea...but if your local and would like to try the lens and buy it off me feel free.
Sympathy welcome....B and H photo customer service please save me from Canon!
EDIT: Here are my boring test shots from yesterday. When you see the framing change that is me trying the outermost focus points on the exact same point.
http://flickr.com/gp/purduery/m875d7/![]()
. i'll buy it and send it into Canon CPS Canada. I hope they can fix it.

