Why It's Better To Scan Black And White Photos In Colour
Jun 22, 2021 12:22:59 GMT
hmca, Sepiana, and 3 more like this
Post by Chris on Jun 22, 2021 12:22:59 GMT
There are advantages to scanning black and white negatives and prints in RGB colour files. The reason is there could be useful information in the colour channels that can aid processing. As an example, please see the example of the scanned print below.
Original RGB scan
Green Channel
Blue Channel
Red Channel
As you can see, the red channel gives the best starting point for digitally repairing the photo. If the scan was in greyscale, then this option would not have been possible.
If you don't have the full Photoshop, You can split the channels with the Elements XXL or the Elements plus plug-in.
If you don't want to install a plug-in, there is a work-around in Elements to see just a particular channel.
eg. to see just the Red channel
1-Open a levels adjustment layer
2- Select the Green channel. Then move the right slider of the output levels from 255 to 0
3- Do exactly the same with the Blue Channel.
Now you will be seeing only the red channel.
Desaturate to remove the red colour, The result may look too dark
Then add a levels or brightness adjustment to make it look better.
Kind regards
Chris
PS, if you wish to remove the hexagonal embossed pattern that appears in some old photographs, you can use the tutorial here:
photoshopelementsandmore.com/thread/6844/fourier-transformation-remove-patterns-images
Original RGB scan
Green Channel
Blue Channel
Red Channel
As you can see, the red channel gives the best starting point for digitally repairing the photo. If the scan was in greyscale, then this option would not have been possible.
If you don't have the full Photoshop, You can split the channels with the Elements XXL or the Elements plus plug-in.
If you don't want to install a plug-in, there is a work-around in Elements to see just a particular channel.
eg. to see just the Red channel
1-Open a levels adjustment layer
2- Select the Green channel. Then move the right slider of the output levels from 255 to 0
3- Do exactly the same with the Blue Channel.
Now you will be seeing only the red channel.
Desaturate to remove the red colour, The result may look too dark
Then add a levels or brightness adjustment to make it look better.
Kind regards
Chris
PS, if you wish to remove the hexagonal embossed pattern that appears in some old photographs, you can use the tutorial here:
photoshopelementsandmore.com/thread/6844/fourier-transformation-remove-patterns-images
