Luminous Landscape Forum

Raw & Post Processing, Printing => Other Raw Converters => Apple Aperture Q&A => Topic started by: stevegoldenberg on February 23, 2010, 01:56:25 pm

Title: Aperture & Chroma Noise
Post by: stevegoldenberg on February 23, 2010, 01:56:25 pm

All,

I recently upgraded to Aperture 3 and noticed that it does a much better job with Chroma noise than previous versions.  However, I cannot find any way to modify it's treatment of chroma noise, does anyone know how to do this?

Title: Aperture & Chroma Noise
Post by: benInMA on March 02, 2010, 05:50:35 pm

It seems like different cameras have different settings available in "RAW Tuning" in A3.

For my 5D I have the following 3 (all sliders) at the bottom of the RAW Tuning brick.

Moire
Radius
Auto-Noise

In A2 I had Moire, Radius (sliders), and "Auto Noise Compensation" (checkbox)

I agree A3 does a much better job.   I have found the following can help with Chroma Noise though..

Moire claims it reduces high frequency color information.. it does not specify whether that means sensor/image noise, or just moire in fabrics, etc..   Radius controls the frequencies that are considered.

I have found if you increase the Moire control considerably, and decrease the radius down near 1-2, you can change the handling of Chroma Noise and sometimes get an improvement.