Blue filters
The Cokin Blue filters comprise two major groups :
Color conversion (020, 021, and 022) and
Color compensating filters (023, 024, and 025).
Color conversion filters (020, 021, and 022) correspond to the Wratten Series 80. They modify artificial light (2800 to 3400 K) for daylight type color film. In addition, they can introduce a deep blue cast to your pictures, thereby adding a touch of mystery.
To get an accurate balancing of the light source to your film you can use the Mired System to calculate which filter or combination of filters you need to get "perfect color". Lionel Armstrong has made up a handy chart to explain The Finer Points of Color Correction
Photo by Ken R Sheide Cokin #21 (80B), Cokin #154 (0.9ND).
"The sea crashing onto a rocky beach on Terceira. This was shot from above just after sunrise so I had to use a neutral density filter to slow the exposure enough."
Ken R Sheide
Color compensating filters (023, 024, and 025) subdue or suppress predominantly warm or reddish tinges that appear, for example, just after sunrise or just before sunset like in this set of photos of Jason.
No filter 023 Blue
For a more exotic effect, use the Blue filters to give your subjects a bluish tinge, so you create an evening mood in the middle of the day or a pressurize morning light, or by underexposing one or two stops, moonlight.
020 minus 3 stops to simulate Dusk/Moon light The old Hollywood term for this effect is called "American Midnight"
Helpful hints :
These filters can be used with lenses of any focal length and with virtually all other Cokin filters and special effects attachments. For still more individual pictures, you can combine these Filters with nearly all COKIN SYSTEM Filters Stars, Fogs, Pastel, Diffractor, Multi Images or Center Spots an others.
Multi-rainbow effect with color filters
OVERCAST DAYS :
The dull gray of an overcast sky looks good in a picture only if you're trying to show the dull gray of an overcast
sky. Filter buffs need little encouragement. Overcast skies are reason enough that it's time to pull out the
filters and do a little experimenting. Try shooting the same subject with several different filters. Try varying the exposures to see if you like the results from some filters better underexposed, overexposed, or correctly exposed. Try to Keep notes to remember what you did.
Kurt Liebrock
no filter Filtered
All photos shown on this site are the ownership of the Photographer and are not to be distributed in any way which may violate his/her copyright without permission from the copyright holder.
