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brainiac Offline [X]
Re: Canon EOS 7D Master thread
skibum5 wrote: brainiac wrote:
I got a request by PM about how I did the NR on that 12800 iso file. The answer is I used smart blur on a duplicate layer in photoshop and chose the overlay white option for edges. I then expanded, feathered, and knocked out the white areas and set the layer\'s blending mode to colour. There are lots of ways to achieve excellent NR just using the built-in Photoshop tools, and typcially it can be done better that way than by any of the commercial NR tools, because it can be suited to each picture, and even particular areas of each picture.
good job
although for anything but a very select number of ultimate keepers from an important shoot that really, really bogs the work flow down...
No it doesn\'t. Batch export to 8 bit tiff from DPP. Record the action in photoshop. Then batch the recorded action in photoshop. Pretty much as fast as you and your machine. The colour blur method doesn\'t need to be applied to localised areas - you can do it in a way that is appropriate for a large set of images.
The method is:
- apple J to duplicate image to a new layer
- smart blur with high quality and overlay edges, experiment with radius and threshold to suit your tastes
- use wand with zero tolerance and non-contiguous to select all white pixels
- expand selection by, let\'s say, 1 pixel
- feather by, let\'s say, 1 pixel
- hit the delete key
- set layer blending to colour
Obviously, depending on how fast your Mac is the smart blur (or dust+scratches) stage can take a few seconds for each 18 Mpixel image, but if you just batch them as part of your workflow you can go and have a cup of tea.
There are many variations of this, for example you could use dust & scratches instead of blur, and still knock out the edges using smart blur or find edges. You can of course very quickly localise this using a layer mask because the effect is fairly subtle: a big thick brush is perfect and you can just splash the effect in where you want it without much care. But there\'s no need to localise to match or exceed most commercial NR packages.
Dec 25, 2009 at 07:50 PM
Previous versions of brainiac's message #7928571 « Canon EOS 7D Master thread »
