Chuck Westfall answers questions regarding Canon 5D Mark III

Started Mar 12, 2012 | Discussions thread
speedmasterMK4
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Re: Chuck Westfall answers questions regarding Canon 5D Mark III
In reply to rwbaron, Mar 12, 2012

that is because the recalculated values are simply added to the RAW file instead of overwriting the original RAW values.

rwbaron wrote:

This new DPP feature sounds really interesting and I'm curious to see how well this works. Increasing the size of the RAW file by 2 to 3 times is curious to say the least.

A new feature called Digital Lens Optimizer processes RAW images to achieve ideal optical characteristics for all types of optical aberration or diffraction, effects of a low-pass filter in front of a CMOS sensor, etc. This function improves image quality particularly in the image periphery in addition to the image center. This function is made possible because the entire design-through-manufacture process, for camera, CMOS sensor, EF lens, and DPP, is carried out entirely at Canon. Images are processed optimally using lens information in the image files (focal length, subject distance, and aperture) and lens data specially for the Digital Lens Optimizer. (However, the size of a .CR2 file will be two to three times larger after applying the Digital Lens Optimizer.) Adjustments are made for such aspects as spherical aberration, chromatic aberration, astigmatism, curvature of field, sagittal halo, chromatic aberration of magnification, axial chromatic aberration, diffraction, and the effects of a low-pass filter in front of the CMOS sensor. DPP’s Digital Lens Optimizer will be usable with any of 29 compatible lenses initially. It works with .CR2 files from EOS models released since 2006 (EOS 30D and forward).

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