Strange Issue converting 7D RAW Files in CS4

Morning\Afternoon\Even​ing

Since recently aquiring a 7D, I have noticed an issue with the RAW converter in CS4 which is causing me some concern, and I wonder if anyone else has got the same problem.

I first noticed it when I took a shot of the interior of a church with a stained glass window at the rear. I didn't have my tripod so I thought I blend two exposures from one RAW image. When I came to drop the exposure level to pull back some of the detail from the window, the entire window area went magenta, bummer.

I tried a similar thing yesterday where I wanted to reduce the exposure slightly on a blown sky, same thing happened, magenta began to creep into the sky.

Anyone else had this or know whats causing it?

Cheers

I haven't noticed that, and i've done everything with 7D files from pushing 3 stops to pulling back three stops. Make sure you have the latest ACR - open bridge and choose help -> updates.

This most likely has to do with the saturation level ACR assumes for your camera. By saturation I mean a fully exposed sensor level.

Here is an excellent discussion of this topic:

http://translate.googl​e.com …ir=es%7Cen&hl=E​N&ie=UTF-8

it is a google translation from Spanish of one of Guillermo luijk's discussions of raw. Guillermo is "_GUI_" here on potn.

Try the same exercise with DPP - or, try dcraw and specify a different saturation level.

Good luck!

Kirk

This is just a stab in the dark ... any chance the Shadow and/or Highlight clipping warning is on? And when you start making adjustments it's actually the pixels being clipped that are being highlighted?

Here is a sample of the problem from the 7D, as posted in the above article:

Cheers guys

kirkt, thats exactly the problem I am experiencing. I tried to read the article but its not particularly clear. I will update my ACR software when I get home.

Cheers again

Yeah, the translation can be confusing in an already tech-heavy subject. At least your knowing that this is the issue will help refine a google search for clearer articles. I know enough about this stuff to be able to fill in the translation errors, but I can appreciate that trying to decipher translational errors in addition to the technical material is rough.

Kirk

Just a quick update, I downloaded ACR 5.6 and everything now works perfectly.

Thanks for the help everyone