scorman
Registered
I have been reading up on color balancing for underwater photos
Most claim that post processing with PS (GIMP) is sufficient.
trick here is what is the best setting for the camera so post editing is most effective?
what to set for manual WB, saturation, sharpness, contrast,ISO(?) ??
BTW, I have spent many hours experimenting with RAW vs high q JPEG outdoors/sunlight/ISO100 in PS and cannot justify RAW in image size nor time required
this was posted on another thread:
GIMP correct underwater image tutorial · Tankedup-Imaging
I do not agree with the idea of using a physical red filter.... it removes information and can screw up dynamic range
However, for UW video, red filter MAY be needed if WB isn't sufficient??
BTW, on last trip to Mexico, a semi-pro gal took beautiful HD colorful videos without lights down 50 feet ...don't know if she used filters buried inside housing??
here is another unrelated ref from forum:
dema 2008 - white balance technical seminar
With manual WB, you could use the white plastic on your wrist writing board while under.
Preset camera WB options are generally considered inadequate.
Another thought on forums was to have different blue cards to WB on land with sunlight to store setting.
This goes back to the 35mm film days, where we used to keep an 18% gray card to get proper exposure when using light meters.
I would think that several "blue" cards would be needed for diff water environments.
Has anyone been successful with these type color correction cards?
Do you have any wisdom to add here??
thx,
Stew
Most claim that post processing with PS (GIMP) is sufficient.
trick here is what is the best setting for the camera so post editing is most effective?
what to set for manual WB, saturation, sharpness, contrast,ISO(?) ??
BTW, I have spent many hours experimenting with RAW vs high q JPEG outdoors/sunlight/ISO100 in PS and cannot justify RAW in image size nor time required
this was posted on another thread:
GIMP correct underwater image tutorial · Tankedup-Imaging
I do not agree with the idea of using a physical red filter.... it removes information and can screw up dynamic range
However, for UW video, red filter MAY be needed if WB isn't sufficient??
BTW, on last trip to Mexico, a semi-pro gal took beautiful HD colorful videos without lights down 50 feet ...don't know if she used filters buried inside housing??
here is another unrelated ref from forum:
dema 2008 - white balance technical seminar
With manual WB, you could use the white plastic on your wrist writing board while under.
Preset camera WB options are generally considered inadequate.
Another thought on forums was to have different blue cards to WB on land with sunlight to store setting.
This goes back to the 35mm film days, where we used to keep an 18% gray card to get proper exposure when using light meters.
I would think that several "blue" cards would be needed for diff water environments.
Has anyone been successful with these type color correction cards?
Do you have any wisdom to add here??
thx,
Stew