DxO Prime Noise Reduction -- Dead Pixels?

Started 1 month ago | Discussions thread
cr4guy
Regular MemberPosts: 114
Like?
Re: DxO Prime Noise Reduction -- Dead Pixels?
In reply to jlehet, 1 month ago

jlehet wrote:

I'm using DxO more and more for fine tuning, and some older images are really benefitting from the Prime noise reduction. But I wonder about the setting for "Dead Pixels." It is always set at a default of 24. But as far as I know, I never really have any dead pixels in any of my digital cameras. Is this an obvious thing, or is it a subtle thing that would show up "in the noise" as it were? I always slide it down to zero. Could the slider have a benefit? Harm? Can I just ignore it?

I'm not entirely sure I completely understand the (brief) description DxO labs have given to the slider...

http://www.dxo.com/intl/photography/tutorials/mastering-raw-noise

(Scroll down to the end @ Section 5)

....but it seems to work a little like the default Color Noise slider in Adobe ACR?

If you don't experience the dead pixel issue in dark shadow areas, and your automatic noise reduction copes adequately, then you can create your own Preset to include a '0' setting for the Dead (a.k.a Mort!) Pixel slider.

EDIT: It seems that dead pixels are usually more problematic with images taken using long exposure settings, such as nightscapes.

To quote DxO:

"A few dead pixels may appear on your images that you shoot at at fairly long exposures."

http://www.dxo.com/intl/photography/tutorials/successful-night-photos-dxo-optics-pro-9

(End of section 2)

Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow