Bad noise in the shadows in ACR

Hi guys,.

Here's the problem I have.

Until last week for conversions of RAW format, I was working with Digital Photo Professional of Canon (the software supplied with the camera). I have Canon 5 d. It was read RAW perfectly, giving a silent picture.

Recently, I adopted all-Adobe workflow, so I use Bridge to visualization, cab for conversion and PS for editing. But the problem is the next. Bridge and after in ACR on perfectly lit photo where I have a dark tones and shadows (those not underexposed, simply correct dark tones and shadows) in ACR and bridge preview I see bad noise colorful, something you would see when artificially increase the brightness in the shadows. This is the default setting, without changing anything in ACR (or bridge) in a blink of an eye, it is not visible, but it is very sensitive when compared side-by-side with Canon Digital Photo Professional insight and overview ACR or bridge. And its also noticeable when you view the shot at 100% size. Of course everything I see in ACR is transferred to Photoshop. Well most of the time I can get rid of this noise in the PS, but it is still disturbing because I've not known just as with Digital Photo Professional.

Could you guys please help me understand source of this noise, and how to get rid of. Thank you in advance.

My monitor is HP 2445, calibrated. Software Photoshop and Bridge CS4.

Pls give it a try with a lot less black. The shot is very clean, it works even with blacks = 0, but try it with 1 or 2. The default in ACR, 5, is brainless.

Because of this change, you can adjust the brightness and contrast to your liking.

Another question: the shot could be exposed 1 2/3 EV higher without clipping (but it wasn't underexposed in the sense that it would have caused excessive noise). I mention this only because you may not know, that ACR adds 0.25 EV "exposure" adjustment shots 5 d without displaying on the slider, thus creating the impression that the shot was exposed more high because it is in reality. (The setting is 0, 750 EV with 50 ISO, but never use with raw data, because it is simply overexposed ISO 100.)

Gabor

Tags: Adobe Camera Raw

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