The Tokina 11-16 is there. It doesnt get auto-applied though. You have to select Tokina in the dropdown of the lens corrections, and that lens is the first one in the list.

I should have said the Canon version.

My camera (60D) reports the lens as just 11-16, no other info.

My quick test shows a positive change in responsiveness for me, even over Lightroom 4.1 RC1. One thing that was really slow for me was switching back and forth between library and develop. I think this change may now even be faster than it was in Lightroom 3.

Adjusting the sliders is still not smooth for me. My CPU is spiking to nearly 100% moving the exposure and contrast sliders. The lag to display the changes is about 1 second behind the slider change. Change slider, wait 1 second, screen updates, change slider, wait 1 second, screen updates. Small adjustment changes like this are still taking a while on my machine.

Screen shot while adjusting the exposure slider (shows almost 1.7GB used memory and 95% of a dual-core Intel Core2 Extreme processor).

Thanks for paying attention to these forums and making the changes! Hopefully we can smooth out the issues and make Lightroom 4 the killer app it should be. J

Geoff

So I downloaded the recent update and LR4.1 RC2 seems to be working well now... I was having trouble getting ACR6.7 on my machine but here is what I finally did to get it to load ..

First I downloaded the DNG converter that is available on the same page that the ACR 6.7 is available. I was able to simply " RUN " the file and didnt have to download it to my desktop and open it ...

Next I downloaded " SAVE"  ( the only way it would work ) the ACR 6.7 file to my desktop ..

then I followed these instructions from another Member :

Open CS5

Open the adobe patch instaler and follow the instructions

at one point you are prompted to close CS5 to continue the install.

It installed and now when I toggle from LR4 to CS5   ( Control / E ) I go straight to Photoshop and all my tools work well.   I'm not sure if I'll run into any glitches , but as for right now I am thrilled at Adobe's quick solution offering . The DNG converter stated that it would expire at the end of next month. Hopefully I'll be prompted when that occurs for a permanent download ...  Good luck and thanks to everyone for their input ...Enjoy,  Mark

Adobe's servers must be getting slammed, it's taking an hour to download this new RC. crazy.

I really hope it fixes the massive slow down problem  - and here's hoping for 5D3 and new Nikon Tethering support in 4.1 - an absolutly essential feature.

5D3 RAW support yes, tethering support not right now... you have to do the dumb watched folder auto import thing right now.

Having the Temp option in the graduated filter selection is BRILLIANT !! and outstanding for landscape shots ....

Even though this is better than 4.0 or RC-1 it's still bad.

I have a pretty good machine and 3.6 worked great so I know it's possible to have good performance but alas...not in RC-2 yet.

With Clarity set to 0, the filmstrip not showing, and the process at 2010 I have less "max CPU" issues and less "not responding" issues but the problem is far from solved.

LR4 RC2 is very slow!

Guys please, we know its beta, please do not force us buying new computers by putting code on code, fix the code. My camera didnt change, and LR3.6 was working fine with the same files.

There's is definitely a memory leak too.

Using Free Memory app on Mac and I see how it behaves different on my computer. I am on LR since version one.

I am on:

Mac OS X 10.6.8

MacBook Pro

Model Identifier:    MacBookPro4,1

Processor Name:    Intel Core 2 Duo

Processor Speed:    2.5 GHz

Number Of Processors:    1

Total Number Of Cores:    2

L2 Cache:    6 MB

Memory:    4 GB

Bus Speed:    800 MHz

My photos and catalog are all on external drive, I wish I could work internal, I know its faster but I cant, not enough space on my laptop drive.

My catalog is 4.3GB and has about 250000 images in it.

My previews are set to High and Quality of1680.

I thought it might be the xmp auto right, so I unchecked it from the catalog settings but did not see any difference, I then re-checked the auto write xmp but now every time I quit LR, I get the msg that it did not finish writing XMP changes.

P.S.

that computer, with the same setup worked just fine on LR 3 (I understand its limitations and realize I can get a faster one these days) but on 4.1 RC2 it is very slow, and takes a lot of memory to operate.

I have a Dell XPS system with the following specs:

3.4 ghz Intel Core i7-2600 Sandy Bridge

16GB Ram

SSD HD for OS (180GB)

Windows 7 Ultimate - 64 bit

numerous USB2.0 and 3.0 HDD with all my photos

Lightroom 3 was magic. Great program fast and efficient. I got Ligthroom 4 and on the same day got the Canon 5D Mark III. Mark III wasnt supported so I went to LR4.1 RC1. The performance tanked. It is terrible. Sooo painful. Even on old catalogs with low res images. It is almost unusable with stalls ('not responding') of the program. Even just moving pic to pic is painstakingly slow. It seems many others have similar performance issues. I moved to RC2 and things have got better, but not to the point of the program being back to the old speeds I am used too and the stalls still occur now and again. I have upped the Caches to extremely large levels and monitoring my PC resources they never are more than 50-60% used. Any advice appreciated. I may try what terry275 is recommending

RC 2 - still slow response/lag.

Q9400

8GB RAM

64bit Windows 7 Professional

Ati Radeon HD 4800

I am new to LR, so LR 4 is my first version. Before that i worked with PSE.

I am not sure if there is a conclusion by now what causes LR4 to run so slow on many computers. It does sound though that there are a number of users who experience good performance, mee included. As i said, i cannot compare to LR3, but i do not see any significant lag in image refresh when i move sliders.

Like others speculated maybe there is a problem with graphics drivers? I use Win7 64bit 12GB RAM, dual ATI 5400 graphics cards. It appears that most of the users who see "normal" performance have ATI graphic cards.

I can't see them fixing it as it appears to be completely random. I've just ordered a new system (not just for Lightroom) and I am not holding my breath, but I am really hoping it works.

This is pathetic.

I uninstalled LR4 and reinstalled LR3 and it's LIGHT GREASED LIGHTNING compared to LR4...no pauses, no waiting....faster than crap. I didn't realized how messed up LR4 was until I just went back and compared.

Until this is cleared up...I'm sticking with LR3.

I'm using LR RC2, and while it's not horrible, I'm finding that after a while using it the sliders get so laggy you can't fine tune accurately, and eventually it grinds to a halt almost completely.  A restart of LR fixes it, so I'm quitting LR every thirty minutes or so to avoid issues.

Model Name: iMac

      Model Identifier: iMac9,1

      Processor Name: Intel Core 2 Duo

      Processor Speed: 2.93 GHz

      Memory: 8 GB

System Version: Mac OS X 10.6.8

I don't remember the beta being this bad, but I haven't used LR 4.0 or RC1 to compare.

Just a comment...  this is a general forum for LR.  All these comments

are great..   but I would suggest you post them to the bug and feed back

page.  Not sure how much time ADOBE spend monitoring this public forum.

http://feedback.photoshop.com/photoshop_family

I'm agreeing with Armin-H.  LR4 is running incredibly SLOW, not like LR3 for speed at all.  Just making brush or cloning adjustments causes a 3-5 second lag for them to take effect.  Not acceptable for Adobe products.  I'm running  Mac Pro QuadCore Xeon w/ 11GB or RAM.  That should be sufficient to tame just about any beast of a program.  The lag occurs even without any other programs running.  Why should that be? 

LR4 is unacceptable, RC1 or 2 — doesnt matter.
 Clealry this product was rushed to support the new cameras (and thus forcing owners of those cameras to upgrade) because it is not ready for actual use whatsoever.

It's really questionable releasing software that is clearly not working as it should when a simple camera update of RAW support for the new Nikons and Canon for LR3 users would have sufficed. Clearly, Adobe saw the opertunity to get a large number of people to pay for the new version... in spite of it's failures.

I am a working professional so my interest in this is beyond passive, and while I can tell you I would happily upgrade (and have - though, not happily) to gain new features and enhancements, I dont enjoy being forced to do so when that comes at the price of a massive performance failure in professional workflow. Software that works great and is priced fairly (one thing I will commend LR4 for being...) sure thing! sign me up, take my money. no worries. — but only when it works correctly and speedily.

I'm quite disappointed, and negatively affected work wise.