hoot
green behind the ears
Hi,
what is a "CR" filter? I can't find an explanation on the 'net...
what is a "CR" filter? I can't find an explanation on the 'net...
zeos 386sx
Well-known
CR might be someones term for "contrast reduction" filters.
"Contrast Control Filters
There are many situations, such as bright sunlit exteriors, where proper contrast is difficult to maintain. Exposing for either highlights or shadows will leave the other severely under or over exposed. Tiffen Low Contrast filters create a small amount of "localized" flare near highlight areas within the image. This reduces contrast by lightening nearby shadow areas, leaving highlights almost unchanged. Tiffen Soft Contrast filters include a light absorbing element in the filter which, without exposure compensation, will reduce contrast by also darkening highlights. Use this latter filter when lighter shadows are not desired. In both cases, the mild flare produced from bright highlights is sometimes used as a lighting effect.
Another, more recently developed type of filter reduces contrast without any localized flare. The Tiffen Ultra Contrast filter series uses the surrounding ambient light, not just light in the image area, to evenly lighten shadows throughout. Use it where contrast control is needed without any other effect on sharpness or highlight flare being apparent."
http://www.videouniversity.com/filters.htm#Contrast Control Filters
"Contrast Control Filters
There are many situations, such as bright sunlit exteriors, where proper contrast is difficult to maintain. Exposing for either highlights or shadows will leave the other severely under or over exposed. Tiffen Low Contrast filters create a small amount of "localized" flare near highlight areas within the image. This reduces contrast by lightening nearby shadow areas, leaving highlights almost unchanged. Tiffen Soft Contrast filters include a light absorbing element in the filter which, without exposure compensation, will reduce contrast by also darkening highlights. Use this latter filter when lighter shadows are not desired. In both cases, the mild flare produced from bright highlights is sometimes used as a lighting effect.
Another, more recently developed type of filter reduces contrast without any localized flare. The Tiffen Ultra Contrast filter series uses the surrounding ambient light, not just light in the image area, to evenly lighten shadows throughout. Use it where contrast control is needed without any other effect on sharpness or highlight flare being apparent."
http://www.videouniversity.com/filters.htm#Contrast Control Filters
hoot
green behind the ears
Thanks! That must be it.