I have recently upgraded from Lightroom 3.6 to the new Lightroom 4 and am genrally pretty happy with it, I tend to use it along with photoshop CS5 extended and also imagenomic Portraiture, but I have found an annoying little problem in doing this and something that I never suffered with when using Lightroom 3.6 and it is this...
when I take an image from Lightroom 4 and click Edit image in Photoshop CS5 and then use Imageonmic to soften skin etc all seems to work well I then carry out any touching up within Photoshop and once finished save it back to lightroom for any final tweaks etc which is fine and all works smoothly, except once I have saved it back to Lightroom the exposure has been pushed up about 3-4 stops at least , meaning I then have to pull it down again and this can sometimes result in extra editing I could do with out. now I know its not the end of the world and is probably just a bug that I'm hoping will be sorted within Lightroom 4 but I just wondered if anyone else has had a similar problem, is it a bug or am I doing something wrong? (although I'm doing the same with Lighroom 4 as i used to do with LIghtroom 3.6 and that worked fine)
Oh one more thing I should mention to get lightroom 4 and CS5 to work properly together I had to go into the Adobe Labs site and download the Camera RAW 6.7 software for CS5 so it could also be a bug here i guess.
There have been several posts over on the Lightroom forum, and other non-Adobe forums also, about this issue: it seems that there's a bug in ACR 6.7RC which causes the image to be over-expose, compared with the setting applied using PV2012 in LR. I guess this is the kind of thing a Release Candidate is supposed to flag up! I was all set to upgrade my own ACR to ensure that PS would recognise my LR4 edits (I normally avoid RC versions and wait for the final), but all the reports of this problem have stopped me from doing so.
In the meantime, best option so far as I'm aware is to process the image in LR (you get the option when you choose to edit in PS), meaning that it does all the rendering before passing it over to PS (otherwise, ACR handles the conversion of the raw file into TIFF). This does however mean that smart-objects and so on are temporarily out of the equation.
I'm sure this will all be resolved pretty soon.
Edit: in fact, one of the posts I mentioned is about ten posts down in this very forum: http://forums.adobe.com/thread/974963?tstart=0