Okay, so I just need to chime in and say the that new CA control is practically usless. The prior one in LR3 was GREAT compared to everything else I ever used, and now it's a useless option that apparently does nothing at all. Huge failure. Not happy at all.
Well, for example: In LR3 as we all know, there were two sliders which I used all the time for wide angle shots, because I get a lot of green magenta shift from one of my lenses at the outer edges. In LR3 a red/cyan shift cleared that shift beautifully. In LR4 it doesn't even touch it, and I can't manually adjust it. I just proessed the exact same phot in 3 nd in 4, and 3 was able to clear the CA almost completely, and in 4 there was no discernable correction at all. And yes, I did try both "all edges" and "highlight edges".
I completely agree. I have some examples, and you will just have to believe me that I have the checkbox checked. (I posted about this missing feature and the replay was oh, but the Auto will do a better job) It does not, at least if you are using lenses that Adobe does not have a profile for...older Nikon micro lenses, for example. I developed a preset that worked for both the 60 and 105mm lens. It worked terrifically: only rarely did I need to tweak the setting, but at least I could. Here is the image, and crops of the issue. (I only adjusted the CA in the LR3 example in the interests of time. You can clearly see remaining blue and yellow fringing in the LR4 example. I tried the defringe too. Still there. Lightroom is about controlling the processing of your images. Why take control away???
So, it clearly does not do a better job.
I totally agree. One of my cameras is a bridge cam on which I use a 0.5x wide angle lens that screws into the filter thread. I even put it on my D7000's 18-105 and 35mm 1.8 occasionally. WIth light coming in on such severe angles, it is prone to fringing with back lit subjects. The new setting does little to correct it. Instead I have to use an adustment brush and de-saturate along all the bad edges. In CS3 I could just adjust the sliders and be done! This new madness creates 50 times the work!!