Post by BuckSkin on May 23, 2020 5:46:33 GMT
I thought I would put my findings here in the event it may be of benefit to someone else.
A majority of my photos are taken outdoors with huge expanses of overwhelmingly green grass, weeds, corn and soybean fields, and thick woods.
Every picture has a strong green cast.
You don't really notice just how green it makes everything else, especially people, until you compare the same image with and without color cast removal.
Manually going through the same process, step by step, image by image, can soon eat up a lot of time.
So, I created an Action in Photoshop CS2 for removing color cast.
I used the familiar process of duplicating the layer, Filter > Blur > Average, ten Levels adjustment layer above that, selecting the center/grey eyedropper to sample the image; then discard the Blur layer to reveal the image with color cast gone.
My first endeavors used the assumption that each image would be treated individually and automatically with no further input from me; but, Photoshop is not that intelligent; it automatically applies the exact same levels adjustment to all images as that from the image used in creating the Action. = If an image has a strong blue or red cast, the action applies the adjustment for the strong green cast of the image used in the initial creation of the action.
So, I created another Action, this time implementing a "Pause" in the process when the levels box appears; I then manually choose the grey dropper, sample the image, click Okay, and it carries on automatically from there until it gets to the Levels step in the next image; rinse and repeat.
I do this in CS2 because Elements does not have the capability to apply the process in batch mode; then, I move the images to Elements for final editing.
At first I was somewhat concerned in that, in CS2, when the Action paused at the Levels step, the Blur > Average layer that I was to sample would always be the same shade of blue; not the filthy pond green that I expected and that I did see when doing the images manually one-at-a-time in Elements.
To allay my concerns, I did half a dozen images automatically in CS2; and, I did the same images manually in Elements 7.
I placed the Elements 7 product as a layer above the CS2 result on all six images and then compared them by turning ON and OFF the top layer.
The results between the two differing programs, one done automatically in batch via an Action, and the other manually step-by-step, were Dead On identical.
I have no idea what the deal is with the Blur layer being blue in CS2; obviously it does not derail the desired result.
Performing the process manually in CS2, the Blur layer looks like it is supposed to.
A majority of my photos are taken outdoors with huge expanses of overwhelmingly green grass, weeds, corn and soybean fields, and thick woods.
Every picture has a strong green cast.
You don't really notice just how green it makes everything else, especially people, until you compare the same image with and without color cast removal.
Manually going through the same process, step by step, image by image, can soon eat up a lot of time.
So, I created an Action in Photoshop CS2 for removing color cast.
I used the familiar process of duplicating the layer, Filter > Blur > Average, ten Levels adjustment layer above that, selecting the center/grey eyedropper to sample the image; then discard the Blur layer to reveal the image with color cast gone.
My first endeavors used the assumption that each image would be treated individually and automatically with no further input from me; but, Photoshop is not that intelligent; it automatically applies the exact same levels adjustment to all images as that from the image used in creating the Action. = If an image has a strong blue or red cast, the action applies the adjustment for the strong green cast of the image used in the initial creation of the action.
So, I created another Action, this time implementing a "Pause" in the process when the levels box appears; I then manually choose the grey dropper, sample the image, click Okay, and it carries on automatically from there until it gets to the Levels step in the next image; rinse and repeat.
I do this in CS2 because Elements does not have the capability to apply the process in batch mode; then, I move the images to Elements for final editing.
At first I was somewhat concerned in that, in CS2, when the Action paused at the Levels step, the Blur > Average layer that I was to sample would always be the same shade of blue; not the filthy pond green that I expected and that I did see when doing the images manually one-at-a-time in Elements.
To allay my concerns, I did half a dozen images automatically in CS2; and, I did the same images manually in Elements 7.
I placed the Elements 7 product as a layer above the CS2 result on all six images and then compared them by turning ON and OFF the top layer.
The results between the two differing programs, one done automatically in batch via an Action, and the other manually step-by-step, were Dead On identical.
I have no idea what the deal is with the Blur layer being blue in CS2; obviously it does not derail the desired result.
Performing the process manually in CS2, the Blur layer looks like it is supposed to.
